mirror of
https://github.com/zeldaret/ss
synced 2026-09-12 20:26:28 -04:00
update from dtk-template - clangd :) (#66)
* update from dtk-template and start work towards using clangd * include <a> -> "a" * Update build.yml * remove/add non-trivial class in union warning
This commit is contained in:
+5
-5
@@ -1,4 +1,4 @@
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#include <DynamicLink.h>
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#include "DynamicLink.h"
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DynamicModuleControlBase *DynamicModuleControlBase::mFirst;
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DynamicModuleControlBase *DynamicModuleControlBase::mLast;
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@@ -311,10 +311,10 @@ int DynamicModuleControl::getModuleSize() const {
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const char *DynamicModuleControl::getModuleTypeString() const {
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static const char *REL_LOAD_TYPES[4] = {
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"????",
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"MEM",
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"ARAM",
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"DVD",
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"????",
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"MEM",
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"ARAM",
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"DVD",
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};
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return REL_LOAD_TYPES[mResourceType & 3];
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}
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@@ -0,0 +1,65 @@
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#ifndef MSL_ALGORITHM_H_
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#define MSL_ALGORITHM_H_
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namespace std {
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template <class ForwardIterator, class T>
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ForwardIterator lower_bound(ForwardIterator first, ForwardIterator last, const T &val);
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template <class ForwardIterator, class T>
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ForwardIterator upper_bound(ForwardIterator first, ForwardIterator last, const T &val);
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template <class InputIt, class UnaryPredicate>
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InputIt find_if(InputIt first, InputIt last, UnaryPredicate p);
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/*
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template<class OutputIt, class Size, int A2>
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struct __fill_n {
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OutputIt fill_n(OutputIt first, Size count, const unsigned long& value);
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};
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template<>
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unsigned long* __fill_n<unsigned long, long, 0>::fill_n(unsigned long* first, long count, const unsigned long& value) {
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for (; count > 0; count--) {
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*first++ = value;
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}
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return first;
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}
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template<class OutputIt, class Size, class T>
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OutputIt fill_n(OutputIt first, Size count, const T& value) {
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return __fill_n::fill_n(first, count, value);
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}
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template<class ForwardIt, class T>
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void __fill(ForwardIt first, ForwardIt last, const T& value, std::random_access_iterator_tag param_3) {
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fill_n(first, last - first, value);
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}
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*/
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template <class ForwardIt, class T>
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void fill(ForwardIt first, ForwardIt last, const T &value) {
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for (; first != last; ++first) {
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*first = value;
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}
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}
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template <class InputIt, class OutputIt>
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inline OutputIt copy(InputIt first, InputIt last, OutputIt d_first) {
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for (; first < last; ++first, ++d_first) {
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*d_first = *first;
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}
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return d_first;
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}
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template <class BidirIt1, class BidirIt2>
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inline BidirIt2 copy_backward(BidirIt1 first, BidirIt1 last, BidirIt2 d_last) {
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while (first != last) {
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*(--d_last) = *(--last);
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}
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return d_last;
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}
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} // namespace std
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#endif
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@@ -0,0 +1,89 @@
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#ifndef MSL_BITSET_H_
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#define MSL_BITSET_H_
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#include "algorithm.h"
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#include "stdio.h"
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#include "stdlib.h"
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namespace std {
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// TODO: where does this go?
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inline void __msl_error(const char *param_0) {
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fprintf(stderr, param_0);
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abort();
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}
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template <size_t N>
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class __bitset_base {
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public:
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__bitset_base();
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bool test(size_t pos) const;
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bool any() const;
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void set(size_t pos, bool val);
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void reset(size_t pos);
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private:
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size_t data[N];
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};
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template <size_t N>
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__bitset_base<N>::__bitset_base() {
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std::fill(data, data + N, 0);
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}
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template <size_t N>
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bool __bitset_base<N>::test(size_t pos) const {
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size_t i = pos / (sizeof(size_t) * 8);
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size_t mask = 1 << (pos % (sizeof(size_t) * 8));
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return data[i] & mask;
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}
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template <size_t N>
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void __bitset_base<N>::set(size_t pos, bool val) {
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size_t i = pos / (sizeof(size_t) * 8);
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size_t mask = 1 << (pos % (sizeof(size_t) * 8));
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if (val) {
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data[i] |= mask;
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} else {
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data[i] &= ~mask;
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}
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}
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template <size_t N>
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void __bitset_base<N>::reset(size_t pos) {
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size_t i = pos / (sizeof(size_t) * 8);
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size_t mask = 1 << (pos % (sizeof(size_t) * 8));
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data[i] &= ~mask;
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}
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template <size_t N>
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class bitset : private __bitset_base<(N - 1) / (sizeof(size_t) * 8) + 1> {
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public:
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typedef __bitset_base<(N - 1) / (sizeof(size_t) * 8) + 1> base;
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bitset(){};
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void set(size_t pos, bool val) {
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if (pos >= N) {
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__msl_error("index out of range of bitset::set");
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}
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base::set(pos, val);
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}
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void reset(size_t pos) {
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if (pos >= N) {
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__msl_error("index out of range of bitset::reset");
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}
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base::reset(pos);
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}
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bool test(size_t pos) const {
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if (pos >= N) {
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__msl_error("index out of range of bitset::test");
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}
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return base::test(pos);
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}
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bool any() const;
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};
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} // namespace std
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#endif
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@@ -0,0 +1,8 @@
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#ifndef MSL_FUNCTIONAL_H_
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#define MSL_FUNCTIONAL_H_
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namespace std {
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template <class T> struct less {};
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} // namespace std
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#endif
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@@ -0,0 +1,21 @@
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#ifndef MSL_ITERATOR_H_
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#define MSL_ITERATOR_H_
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namespace std {
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template< class InputIt, class Distance >
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inline void advance( InputIt& it, Distance n) {
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while (n > 0) {
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--n;
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++it;
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}
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}
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// This needs to be defined with gcc concepts or something similar. Workaround.
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template< class InputIt, class Distance >
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inline void advance_pointer( InputIt& it, Distance n) {
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it += n;
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}
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}
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#endif
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@@ -0,0 +1,24 @@
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#ifndef MSL_MEMORY_H_
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#define MSL_MEMORY_H_
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namespace std {
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template<class ForwardIt, class Size, class T>
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inline ForwardIt uninitialized_fill_n(ForwardIt first, Size count, const T& value) {
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for (; count > 0; ++first, (void) --count) {
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*first = value;
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}
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return first;
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}
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template<class InputIt, class NoThrowForwardIt>
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inline NoThrowForwardIt uninitialized_copy(InputIt first, InputIt last, NoThrowForwardIt d_first) {
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for (; first != last; ++first, ++d_first) {
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*d_first = *first;
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}
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return d_first;
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}
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}
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#endif
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@@ -0,0 +1,17 @@
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#ifndef MSL_UTILITY_H_
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#define MSL_UTILITY_H_
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namespace std {
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template <class T1, class T2>
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struct pair {
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T1 first;
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T2 second;
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pair() {
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first = T1();
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second = T2();
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}
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};
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} // namespace std
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#endif
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@@ -0,0 +1,18 @@
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#ifndef _MSL_COMMON_FILE_POS_H
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#define _MSL_COMMON_FILE_POS_H
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#include "ansi_files.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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int fseek(FILE* file, unsigned long offset, int mode);
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int _fseek(FILE* file, fpos_t offset, int mode);
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long ftell(FILE* file);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _MSL_COMMON_FILE_POS_H */
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@@ -0,0 +1,17 @@
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#ifndef _MSL_COMMON_ABORT_EXIT_H
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#define _MSL_COMMON_ABORT_EXIT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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void exit(int status);
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void abort(void);
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extern void (*__stdio_exit)(void);
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#ifdef __cplusplus
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};
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#endif
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#endif /* _MSL_COMMON_ABORT_EXIT_H */
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@@ -0,0 +1,15 @@
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#ifndef _MSL_COMMON_ALLOC_H
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#define _MSL_COMMON_ALLOC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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void free(void* ptr);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _MSL_COMMON_ALLOC_H */
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@@ -0,0 +1,129 @@
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#ifndef _MSL_COMMON_ANSI_FILES_H
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#define _MSL_COMMON_ANSI_FILES_H
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#include "stddef.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SEEK_SET 0
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#define SEEK_CUR 1
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#define SEEK_END 2
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typedef unsigned long __file_handle;
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typedef unsigned long fpos_t;
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#ifndef __cplusplus
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typedef unsigned short wchar_t;
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#endif
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#define set_error(file) \
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do { \
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(file)->file_state.error = 1; \
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(file)->buffer_length = 0; \
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} while (0)
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enum __file_kinds {
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__closed_file,
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__disk_file,
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__console_file,
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__unavailable_file,
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};
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enum __file_orientation {
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/* 0x0 */ UNORIENTED,
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/* 0x1 */ CHAR_ORIENTED,
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/* 0x2 */ WIDE_ORIENTED,
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};
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typedef struct _file_modes {
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unsigned int open_mode : 2;
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unsigned int io_mode : 3;
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unsigned int buffer_mode : 2;
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unsigned int file_kind : 3;
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unsigned int file_orientation : 2;
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unsigned int binary_io : 1;
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} file_modes;
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enum __io_modes {
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__read = 1,
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__write = 2,
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__read_write = 3,
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__append = 4,
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};
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|
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enum __io_states {
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__neutral,
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__writing,
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__reading,
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__rereading,
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};
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|
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enum __io_results {
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__no_io_error,
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__io_error,
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__io_EOF,
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};
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|
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typedef struct _file_states {
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unsigned int io_state : 3;
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unsigned int free_buffer : 1;
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unsigned char eof;
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unsigned char error;
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} file_states;
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|
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typedef void (*__idle_proc)(void);
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typedef int (*__pos_proc)(__file_handle file, fpos_t* position, int mode, __idle_proc idle_proc);
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typedef int (*__io_proc)(__file_handle file, unsigned char* buff, size_t* count,
|
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__idle_proc idle_proc);
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typedef int (*__close_proc)(__file_handle file);
|
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|
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typedef struct _FILE {
|
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/* 0x00 */ __file_handle handle;
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/* 0x04 */ file_modes file_mode;
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/* 0x08 */ file_states file_state;
|
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/* 0x0C */ unsigned char is_dynamically_allocated;
|
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/* 0x0D */ char char_buffer;
|
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/* 0x0E */ char char_buffer_overflow;
|
||||
/* 0x0F */ char ungetc_buffer[2];
|
||||
/* 0x12 */ wchar_t ungetc_wide_buffer[2];
|
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/* 0x18 */ unsigned long position;
|
||||
/* 0x1C */ unsigned char* buffer;
|
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/* 0x20 */ unsigned long buffer_size;
|
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/* 0x24 */ unsigned char* buffer_ptr;
|
||||
/* 0x28 */ unsigned long buffer_length;
|
||||
/* 0x2C */ unsigned long buffer_alignment;
|
||||
/* 0x30 */ unsigned long save_buffer_length;
|
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/* 0x34 */ unsigned long buffer_position;
|
||||
/* 0x38 */ __pos_proc position_fn;
|
||||
/* 0x3C */ __io_proc read_fn;
|
||||
/* 0x40 */ __io_proc write_fn;
|
||||
/* 0x44 */ __close_proc close_fn;
|
||||
/* 0x48 */ __idle_proc idle_fn;
|
||||
/* 0x4C */ struct _FILE* next_file;
|
||||
} FILE;
|
||||
|
||||
typedef struct _files {
|
||||
FILE _stdin;
|
||||
FILE _stdout;
|
||||
FILE _stderr;
|
||||
FILE empty;
|
||||
} files;
|
||||
|
||||
#define _IONBF 0
|
||||
#define _IOLBF 1
|
||||
#define _IOFBF 2
|
||||
|
||||
extern files __files;
|
||||
extern int __close_console(__file_handle file);
|
||||
extern int __write_console(__file_handle file, unsigned char* buf, size_t* count, __idle_proc idle_fn);
|
||||
extern int __read_console(__file_handle file, unsigned char* buf, size_t* count, __idle_proc idle_fn);
|
||||
|
||||
unsigned int __flush_all(void);
|
||||
void __close_all(void);
|
||||
|
||||
#ifdef __cplusplus
|
||||
};
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_ANSI_FILES_H */
|
||||
@@ -0,0 +1,35 @@
|
||||
#ifndef _MSL_COMMON_ANSI_FP_H
|
||||
#define _MSL_COMMON_ANSI_FP_H
|
||||
|
||||
|
||||
#define SIGDIGLEN 36
|
||||
|
||||
typedef struct decimal {
|
||||
char sign;
|
||||
char unk1;
|
||||
short exp;
|
||||
struct {
|
||||
unsigned char length;
|
||||
unsigned char text[36];
|
||||
unsigned char unk41;
|
||||
} sig;
|
||||
} decimal;
|
||||
|
||||
typedef struct decform {
|
||||
char style;
|
||||
char unk1;
|
||||
short digits;
|
||||
} decform;
|
||||
|
||||
/* void __ull2dec(decimal*, u64);
|
||||
void __timesdec(decimal*, const decimal*, const decimal*);
|
||||
void __str2dec(decimal*, const char*, short);
|
||||
void __two_exp(decimal*, s32);
|
||||
BOOL __equals_dec(const decimal*, const decimal*);
|
||||
BOOL __less_dec(const decimal*, const decimal*);
|
||||
void __minus_dec(decimal*, const decimal*, const decimal*);
|
||||
void __num2dec_internal(decimal*, f64);
|
||||
void __num2dec(const decform*, f64, decimal*);
|
||||
f64 __dec2num(const decimal*); */
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,19 @@
|
||||
#ifndef _MSL_COMMON_ARITH_H
|
||||
#define _MSL_COMMON_ARITH_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
typedef struct {
|
||||
int quot; /* quotient */
|
||||
int rem; /* remainder */
|
||||
} div_t;
|
||||
|
||||
div_t div(int numerator, int denominator);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_ARITH_H */
|
||||
@@ -0,0 +1,11 @@
|
||||
#ifndef _MSL_COMMON_BUFFER_IO_H
|
||||
#define _MSL_COMMON_BUFFER_IO_H
|
||||
|
||||
#include "ansi_files.h"
|
||||
|
||||
enum { __align_buffer, __dont_align_buffer };
|
||||
|
||||
void __prep_buffer(FILE* file);
|
||||
int __flush_buffer(FILE* file, size_t* bytes_flushed);
|
||||
|
||||
#endif /* _MSL_COMMON_BUFFER_IO_H */
|
||||
@@ -0,0 +1,17 @@
|
||||
#ifndef _MSL_COMMON_CHAR_IO_H
|
||||
#define _MSL_COMMON_CHAR_IO_H
|
||||
|
||||
#include "ansi_files.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
int fputs(const char *str, FILE *stream);
|
||||
int __put_char(int c, FILE *stream);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_CHAR_IO_H */
|
||||
@@ -0,0 +1,23 @@
|
||||
#ifndef STD_CMATH_H_
|
||||
#define STD_CMATH_H_
|
||||
|
||||
|
||||
namespace std {
|
||||
/* float fabs(float num) {
|
||||
return ::fabsf(num);
|
||||
} */
|
||||
|
||||
inline float fabsf(float num) {
|
||||
return ::fabsf(num);
|
||||
}
|
||||
|
||||
inline float sqrt(float x) {
|
||||
return ::sqrtf(x);
|
||||
}
|
||||
|
||||
inline float abs(float x) {
|
||||
return ::fabsf(x);
|
||||
}
|
||||
} // namespace std
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,30 @@
|
||||
#ifndef _MSL_COMMON_CRITICAL_REGIONS_H
|
||||
#define _MSL_COMMON_CRITICAL_REGIONS_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
enum critical_regions {
|
||||
atexit_funcs_access,
|
||||
malloc_pool_access,
|
||||
stdin_access,
|
||||
stdout_access,
|
||||
stderr_access,
|
||||
files_access,
|
||||
console_status_access,
|
||||
signal_funcs_access,
|
||||
thread_access,
|
||||
num_critical_regions
|
||||
};
|
||||
|
||||
void __init_critical_regions(void);
|
||||
void __kill_critical_regions(void);
|
||||
void __begin_critical_region(int region);
|
||||
void __end_critical_region(int region);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,16 @@
|
||||
#ifndef STD_CMATH_H_
|
||||
#define STD_CMATH_H_
|
||||
|
||||
#include "string.h"
|
||||
|
||||
namespace std {
|
||||
inline size_t strlen(const char* str) {
|
||||
return ::strlen(str);
|
||||
}
|
||||
|
||||
inline char* strcpy(char* dest, const char* src) {
|
||||
return ::strcpy(dest, src);
|
||||
}
|
||||
} // namespace std
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,46 @@
|
||||
#ifndef _MSL_COMMON_CTYPE_H
|
||||
#define _MSL_COMMON_CTYPE_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#define EOF -1L
|
||||
|
||||
extern unsigned char __ctype_map[];
|
||||
extern unsigned char __lower_map[];
|
||||
extern unsigned char __upper_map[];
|
||||
|
||||
#define __control_char 0x01
|
||||
#define __motion_char 0x02
|
||||
#define __space_char 0x04
|
||||
#define __punctuation 0x08
|
||||
#define __digit 0x10
|
||||
#define __hex_digit 0x20
|
||||
#define __lower_case 0x40
|
||||
#define __upper_case 0x80
|
||||
|
||||
#define __letter (__lower_case | __upper_case)
|
||||
#define __alphanumeric (__letter | __digit)
|
||||
#define __graphic (__alphanumeric | __punctuation)
|
||||
#define __printable (__graphic | __space_char)
|
||||
#define __whitespace (__motion_char | __space_char)
|
||||
#define __control (__motion_char | __control_char)
|
||||
#define __zero_fill(c) ((int)(unsigned char)(c))
|
||||
|
||||
int tolower(int);
|
||||
|
||||
inline int isalpha(int c) { return (int)(__ctype_map[(unsigned char)c] & __letter); }
|
||||
inline int isdigit(int c) { return (int)(__ctype_map[(unsigned char)c] & __digit); }
|
||||
inline int isspace(int c) { return (int)(__ctype_map[(unsigned char)c] & __whitespace); }
|
||||
inline int isupper(int c) { return (int)(__ctype_map[(unsigned char)c] & __upper_case); }
|
||||
inline int isxdigit(int c) { return (int)(__ctype_map[(unsigned char)c] & __hex_digit); }
|
||||
// added underscore to avoid naming conflicts
|
||||
inline int _tolower(int c) { return (c == -1 ? -1 : (int)__lower_map[(unsigned char)c]); }
|
||||
inline int toupper(int c) { return (c == -1 ? -1 : (int)__upper_map[(unsigned char)c]); }
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_CTYPE_H */
|
||||
@@ -0,0 +1,17 @@
|
||||
#ifndef _MSL_COMMON_DIRECT_IO_H
|
||||
#define _MSL_COMMON_DIRECT_IO_H
|
||||
|
||||
#include "ansi_files.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
size_t __fwrite(const void* buffer, size_t size, size_t count, FILE* stream);
|
||||
size_t fwrite(const void* buffer, size_t size, size_t count, FILE* stream);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_DIRECT_IO_H */
|
||||
@@ -0,0 +1,20 @@
|
||||
#ifndef MSL_COMMON_SRC_ERRNO_H
|
||||
#define MSL_COMMON_SRC_ERRNO_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#define ENOERR 0
|
||||
#define EDOM 33
|
||||
#define ERANGE 34
|
||||
#define EFPOS 40
|
||||
#define ESIGPARM 36
|
||||
|
||||
extern int errno;
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* MSL_COMMON_SRC_ERRNO_H */
|
||||
@@ -0,0 +1,15 @@
|
||||
#ifndef _MSL_COMMON_EXTRAS_H
|
||||
#define _MSL_COMMON_EXTRAS_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
int strnicmp(const char* str1, const char* str2, int n);
|
||||
int stricmp(const char* str1, const char* str2);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_EXTRAS_H */
|
||||
@@ -0,0 +1,18 @@
|
||||
#ifndef _MSL_COMMON_FILE_IO_H
|
||||
#define _MSL_COMMON_FILE_IO_H
|
||||
|
||||
#include "ansi_files.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
int __msl_strnicmp(const char* str1, const char* str2, int n);
|
||||
int fflush(FILE* file);
|
||||
int fclose(FILE* file);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_FILE_IO_H */
|
||||
@@ -0,0 +1,91 @@
|
||||
#ifndef _MSL_COMMON_FLOAT_H
|
||||
#define _MSL_COMMON_FLOAT_H
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#define FP_SNAN 0
|
||||
#define FP_QNAN 1
|
||||
#define FP_INFINITE 2
|
||||
#define FP_ZERO 3
|
||||
#define FP_NORMAL 4
|
||||
#define FP_SUBNORMAL 5
|
||||
|
||||
#define FP_NAN FP_QNAN
|
||||
|
||||
#define fpclassify(x) ((sizeof(x) == sizeof(float)) ? __fpclassifyf(x) : __fpclassifyd(x))
|
||||
#define signbit(x) ((sizeof(x) == sizeof(float)) ? __signbitf(x) : __signbitd(x))
|
||||
#define isfinite(x) ((fpclassify(x) > 2))
|
||||
|
||||
#define __signbitf(x) ((int)(__HI(x) & 0x80000000))
|
||||
|
||||
// TODO: OK?
|
||||
#define __signbitd(x) ((int)(__HI(x) & 0x80000000))
|
||||
|
||||
extern unsigned long __float_nan[];
|
||||
extern unsigned long __float_huge[];
|
||||
extern unsigned long __float_max[];
|
||||
extern unsigned long __float_epsilon[];
|
||||
|
||||
inline int __fpclassifyf(float __value) {
|
||||
unsigned long integer = *(unsigned long *)&__value;
|
||||
|
||||
switch (integer & 0x7f800000) {
|
||||
case 0x7f800000:
|
||||
if ((integer & 0x7fffff) != 0) {
|
||||
return FP_QNAN;
|
||||
}
|
||||
return FP_INFINITE;
|
||||
|
||||
case 0:
|
||||
if ((integer & 0x7fffff) != 0) {
|
||||
return FP_SUBNORMAL;
|
||||
}
|
||||
return FP_ZERO;
|
||||
}
|
||||
|
||||
return FP_NORMAL;
|
||||
}
|
||||
|
||||
inline int __fpclassifyd(double __value) {
|
||||
switch (__HI(__value) & 0x7ff00000) {
|
||||
case 0x7ff00000: {
|
||||
if ((__HI(__value) & 0x000fffff) || (__LO(__value) & 0xffffffff)) {
|
||||
return FP_QNAN;
|
||||
} else {
|
||||
return FP_INFINITE;
|
||||
}
|
||||
break;
|
||||
}
|
||||
case 0: {
|
||||
if ((__HI(__value) & 0x000fffff) || (__LO(__value) & 0xffffffff)) {
|
||||
return FP_SUBNORMAL;
|
||||
} else {
|
||||
return FP_ZERO;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
return FP_NORMAL;
|
||||
}
|
||||
|
||||
#define FLT_MANT_DIG 24
|
||||
#define FLT_DIG 6
|
||||
#define FLT_MIN_EXP (-125)
|
||||
#define FLT_MIN_10_EXP (-37)
|
||||
#define FLT_MAX_EXP 128
|
||||
#define FLT_MAX_10_EXP 38
|
||||
|
||||
// #define FLT_MAX (*(float*) __float_max)
|
||||
// #define FLT_EPSILON (*(float*) __float_epsilon)
|
||||
|
||||
#define FLT_MAX (3.402823466e+38f)
|
||||
#define FLT_EPSILON (1.192092896e-07f)
|
||||
|
||||
#define DBL_MANT_DIG 53
|
||||
#define DBL_DIG 15
|
||||
#define DBL_MIN_EXP (-1021)
|
||||
#define DBL_MIN_10_EXP (-308)
|
||||
#define DBL_MAX_EXP 1024
|
||||
#define DBL_MAX_10_EXP 308
|
||||
|
||||
#endif /* _MSL_COMMON_FLOAT_H */
|
||||
@@ -0,0 +1,102 @@
|
||||
#ifndef _STD_LIMITS_H
|
||||
#define _STD_LIMITS_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#define CHAR_BIT 8
|
||||
|
||||
#define SCHAR_MIN (-0x7F - 1)
|
||||
#define SCHAR_MAX 0x7F
|
||||
#define UCHAR_MAX 0xFF
|
||||
|
||||
#define CHAR_MIN 0
|
||||
#define CHAR_MAX SCHAR_MAX
|
||||
|
||||
#define SHRT_MIN (-0x7FFF - 1)
|
||||
#define SHRT_MAX 0x7FFF
|
||||
#define USHRT_MAX 0xFFFF
|
||||
|
||||
#define INT_MIN (-0x7FFFFFFF - 1)
|
||||
#define INT_MAX 0x7FFFFFFF
|
||||
#define UINT_MAX 0xFFFFFFFF
|
||||
|
||||
#define LONG_MIN (-0x7FFFFFFFL - 1)
|
||||
#define LONG_MAX 0x7FFFFFFFL
|
||||
#define ULONG_MAX 0xFFFFFFFFUL
|
||||
|
||||
#define LLONG_MIN (-0x7FFFFFFFFFFFFFFFLL - 1)
|
||||
#define LLONG_MAX 0x7FFFFFFFFFFFFFFFLL
|
||||
#define ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
|
||||
namespace std {
|
||||
template <typename T>
|
||||
class numeric_limits {
|
||||
public:
|
||||
inline static T min();
|
||||
inline static T max();
|
||||
};
|
||||
|
||||
template <>
|
||||
class numeric_limits<char> {
|
||||
public:
|
||||
inline static char min() { return -0x80; }
|
||||
inline static char max() { return 0x7F; }
|
||||
};
|
||||
|
||||
template <>
|
||||
class numeric_limits<short> {
|
||||
public:
|
||||
inline static short min() { return -0x8000; }
|
||||
inline static short max() { return 0x7FFF; }
|
||||
};
|
||||
|
||||
template <>
|
||||
class numeric_limits<int> {
|
||||
public:
|
||||
inline static int min() { return -0x80000000; }
|
||||
inline static int max() { return 0x7FFFFFFF; }
|
||||
};
|
||||
|
||||
template <>
|
||||
class numeric_limits<long> {
|
||||
public:
|
||||
inline static long min() { return -0x80000000; }
|
||||
inline static long max() { return 0x7FFFFFFF; }
|
||||
};
|
||||
|
||||
template <>
|
||||
class numeric_limits<unsigned char> {
|
||||
public:
|
||||
inline static unsigned char min() { return 0x0; }
|
||||
inline static unsigned char max() { return 0xFF; }
|
||||
};
|
||||
|
||||
template <>
|
||||
class numeric_limits<unsigned short> {
|
||||
public:
|
||||
inline static unsigned short min() { return 0x0; }
|
||||
inline static unsigned short max() { return 0xFFFF; }
|
||||
};
|
||||
|
||||
template <>
|
||||
class numeric_limits<unsigned int> {
|
||||
public:
|
||||
inline static unsigned int min() { return 0x0; }
|
||||
inline static unsigned int max() { return 0xFFFFFFFF; }
|
||||
};
|
||||
|
||||
template <>
|
||||
class numeric_limits<unsigned long> {
|
||||
public:
|
||||
inline static unsigned long min() { return 0x0; }
|
||||
inline static unsigned long max() { return 0xFFFFFFFF; }
|
||||
};
|
||||
|
||||
} // namespace std
|
||||
#endif
|
||||
#endif
|
||||
@@ -0,0 +1,114 @@
|
||||
#ifndef MSL_MATH_H_
|
||||
#define MSL_MATH_H_
|
||||
|
||||
#include "float.h"
|
||||
|
||||
#define NAN (*(float *)__float_nan)
|
||||
#define HUGE_VALF (*(float *)__float_huge)
|
||||
|
||||
#define M_PI 3.14159265358979323846f
|
||||
#define M_SQRT3 1.73205f
|
||||
|
||||
#define DEG_TO_RAD(degrees) (degrees * (M_PI / 180.0f))
|
||||
#define RAD_TO_DEG(radians) (radians / (180.0f / M_PI))
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
int abs(int);
|
||||
int labs(int);
|
||||
double acos(double);
|
||||
float acosf(float);
|
||||
double asin(double);
|
||||
double atan(double);
|
||||
double atan2(double, double);
|
||||
double ceil(double);
|
||||
double copysign(double, double);
|
||||
double cos(double);
|
||||
float cosf(float);
|
||||
double exp(double);
|
||||
double ceil(double);
|
||||
float ceilf(float);
|
||||
double frexp(double, int *);
|
||||
double ldexp(double, int);
|
||||
double modf(double, double *);
|
||||
double pow(double, double);
|
||||
double sin(double);
|
||||
float sinf(float);
|
||||
double tan(double);
|
||||
float tanf(float);
|
||||
double floor(double);
|
||||
float floorf(float);
|
||||
double fmod(double, double);
|
||||
float fmodf(float, float);
|
||||
float fmodff(float, float *);
|
||||
|
||||
extern float __fabsf(float);
|
||||
inline double fabs(double f) { return __fabs(f); }
|
||||
inline double fabsf2(float f) { return __fabsf(f); }
|
||||
inline float fabsf(float f) { return fabsf2(f); }
|
||||
|
||||
inline float fmodf(float f1, float f2) { return fmod(f1, f2); }
|
||||
|
||||
inline float modff(float x, float *iptr) {
|
||||
float frac;
|
||||
double intg;
|
||||
|
||||
frac = modf((double)x, &intg);
|
||||
*iptr = intg;
|
||||
|
||||
return frac;
|
||||
}
|
||||
inline double sqrt_step(double tmpd, float mag) {
|
||||
return tmpd * 0.5 * (3.0 - mag * (tmpd * tmpd));
|
||||
}
|
||||
|
||||
extern inline float sqrtf(float x) {
|
||||
const double _half = .5;
|
||||
const double _three = 3.0;
|
||||
volatile float y;
|
||||
if (x > 0.0f) {
|
||||
double guess = __frsqrte((double)x); // returns an approximation to
|
||||
guess =
|
||||
_half * guess * (_three - guess * guess * x); // now have 12 sig bits
|
||||
guess =
|
||||
_half * guess * (_three - guess * guess * x); // now have 24 sig bits
|
||||
guess =
|
||||
_half * guess * (_three - guess * guess * x); // now have 32 sig bits
|
||||
y = (float)(x * guess);
|
||||
return y;
|
||||
}
|
||||
return x;
|
||||
}
|
||||
|
||||
extern inline double sqrt(double x) {
|
||||
if (x > 0.0) {
|
||||
double guess = __frsqrte(x); /* returns an approximation to */
|
||||
guess = .5 * guess * (3.0 - guess * guess * x); /* now have 8 sig bits */
|
||||
guess = .5 * guess * (3.0 - guess * guess * x); /* now have 16 sig bits */
|
||||
guess = .5 * guess * (3.0 - guess * guess * x); /* now have 32 sig bits */
|
||||
guess = .5 * guess * (3.0 - guess * guess * x); /* now have > 53 sig bits */
|
||||
return x * guess;
|
||||
} else if (x == 0) {
|
||||
return 0;
|
||||
} else if (x) {
|
||||
return NAN;
|
||||
}
|
||||
|
||||
return HUGE_VALF;
|
||||
}
|
||||
|
||||
inline float atan2f(float y, float x) { return (float)atan2(y, x); }
|
||||
|
||||
// these are duplicated due to sinf/cosf having a symbol, but
|
||||
// still being used as inlines elsewhere
|
||||
inline float i_sinf(float x) { return sin(x); }
|
||||
inline float i_cosf(float x) { return cos(x); }
|
||||
inline float i_tanf(float x) { return tanf(x); }
|
||||
|
||||
#ifdef __cplusplus
|
||||
};
|
||||
#endif
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,16 @@
|
||||
#ifndef _MSL_COMMON_MBSTRING_H
|
||||
#define _MSL_COMMON_MBSTRING_H
|
||||
|
||||
#include "wchar_io.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
size_t wcstombs(char* dst, const wchar_t* src, size_t n);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_MBSTRING_H */
|
||||
@@ -0,0 +1,19 @@
|
||||
#ifndef _MSL_COMMON_MEM_FUNCS_H
|
||||
#define _MSL_COMMON_MEM_FUNCS_H
|
||||
|
||||
#include "stddef.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
void __copy_longs_rev_unaligned(void* dst, const void* src, size_t n);
|
||||
void __copy_longs_unaligned(void* dst, const void* src, size_t n);
|
||||
void __copy_longs_rev_aligned(void* dst, const void* src, size_t n);
|
||||
void __copy_longs_aligned(void* dst, const void* src, size_t n);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_MEM_FUNCS_H */
|
||||
@@ -0,0 +1,14 @@
|
||||
#ifndef _MSL_COMMON_MISC_IO_H
|
||||
#define _MSL_COMMON_MISC_IO_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
void __stdio_atexit(void);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_MISC_IO_H */
|
||||
@@ -0,0 +1,10 @@
|
||||
#ifndef MSL_NEW_H_
|
||||
#define MSL_NEW_H_
|
||||
|
||||
#include "stddef.h"
|
||||
|
||||
inline void *operator new(size_t size, void *ptr) {
|
||||
return ptr;
|
||||
}
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,22 @@
|
||||
#ifndef _MSL_COMMON_PRINTF_H
|
||||
#define _MSL_COMMON_PRINTF_H
|
||||
|
||||
#include "__va_arg.h"
|
||||
#include "ansi_files.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
int fprintf(FILE *stream, const char *format, ...);
|
||||
int printf(const char *format, ...);
|
||||
int sprintf(char *s, const char *format, ...);
|
||||
int snprintf(char *s, size_t n, const char *format, ...);
|
||||
int vsnprintf(char *s, size_t n, const char *format, va_list arg);
|
||||
int vprintf(const char *format, va_list arg);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_PRINTF_H */
|
||||
@@ -0,0 +1,42 @@
|
||||
#ifndef _MSL_COMMON_SCANF_H
|
||||
#define _MSL_COMMON_SCANF_H
|
||||
|
||||
#include "ansi_files.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
enum __ReadProcActions { __GetAChar, __UngetAChar, __TestForError };
|
||||
|
||||
enum __WReadProcActions { __GetAwChar, __UngetAwChar, __TestForwcsError };
|
||||
|
||||
typedef struct {
|
||||
char* CharStr;
|
||||
size_t MaxCharCount;
|
||||
size_t CharsWritten;
|
||||
} __OutStrCtrl;
|
||||
|
||||
typedef struct {
|
||||
char* NextChar;
|
||||
int NullCharDetected;
|
||||
} __InStrCtrl;
|
||||
|
||||
typedef struct {
|
||||
wchar_t* wCharStr;
|
||||
size_t MaxCharCount;
|
||||
size_t CharsWritten;
|
||||
} __wOutStrCtrl;
|
||||
|
||||
typedef struct {
|
||||
wchar_t* wNextChar;
|
||||
int wNullCharDetected;
|
||||
} __wInStrCtrl;
|
||||
|
||||
int __StringRead(void* str, int ch, int behavior);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_SCANF_H */
|
||||
@@ -0,0 +1,16 @@
|
||||
#ifndef _MSL_COMMON_SIGNAL_H
|
||||
#define _MSL_COMMON_SIGNAL_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
typedef void (*__signal_func_ptr)(int);
|
||||
|
||||
int raise(int sig);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_SIGNAL_H */
|
||||
@@ -0,0 +1,26 @@
|
||||
#ifndef _STDDEF_H_
|
||||
#define _STDDEF_H_
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#if defined __INTELLISENSE__
|
||||
typedef unsigned int size_t;
|
||||
typedef int ptrdiff_t;
|
||||
#else
|
||||
typedef unsigned long size_t;
|
||||
typedef long ptrdiff_t;
|
||||
#endif
|
||||
|
||||
#define offsetof(type, member) ((size_t) & (((type *)0)->member))
|
||||
|
||||
#ifndef NULL
|
||||
#define NULL (0)
|
||||
#endif
|
||||
|
||||
#ifdef __cplusplus
|
||||
};
|
||||
#endif
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,14 @@
|
||||
#ifndef __STDC_STDINT_H__
|
||||
#define __STDC_STDINT_H__
|
||||
|
||||
typedef unsigned char uint8_t;
|
||||
typedef unsigned short uint16_t;
|
||||
typedef unsigned long uint32_t;
|
||||
typedef unsigned long long uint64_t;
|
||||
|
||||
typedef signed char int8_t;
|
||||
typedef signed short int16_t;
|
||||
typedef signed long int32_t;
|
||||
typedef signed long long int64_t;
|
||||
|
||||
#endif // __STDC_STDINT_H__
|
||||
@@ -0,0 +1,13 @@
|
||||
#ifndef MSL_STDIO_H_
|
||||
#define MSL_STDIO_H_
|
||||
|
||||
#include "char_io.h"
|
||||
#include "extras.h"
|
||||
#include "file_io.h"
|
||||
#include "printf.h"
|
||||
|
||||
#define stdin (&__files._stdin)
|
||||
#define stdout (&__files._stdout)
|
||||
#define stderr (&__files._stderr)
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,8 @@
|
||||
#ifndef MSL_STDLIB_H_
|
||||
#define MSL_STDLIB_H_
|
||||
|
||||
#include "abort_exit.h"
|
||||
#include "arith.h"
|
||||
#include "strtoul.h"
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,30 @@
|
||||
#ifndef _MSL_COMMON_STRING_H
|
||||
#define _MSL_COMMON_STRING_H
|
||||
|
||||
#include "stddef.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
void *memcpy(void *dst, const void *src, size_t n);
|
||||
void *memset(void *dst, int val, size_t n);
|
||||
int memcmp(const void *lhs, const void *rhs, size_t count);
|
||||
void *__memrchr(const void *ptr, int ch, size_t count);
|
||||
void *memchr(const void *ptr, int ch, size_t count);
|
||||
void *memmove(void *dst, const void *src, size_t n);
|
||||
char *strrchr(const char *str, int c);
|
||||
char *strchr(const char *str, int c);
|
||||
int strncmp(const char *str1, const char *str2, size_t n);
|
||||
int strcmp(const char *str1, const char *str2);
|
||||
char *strcat(char *dst, const char *src);
|
||||
char *strncpy(char *dst, const char *src, size_t n);
|
||||
char *strcpy(char *dst, const char *src);
|
||||
int sscanf(const char *buffer, const char *format, ...);
|
||||
size_t strlen(const char *str);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_STRING_H */
|
||||
@@ -0,0 +1,17 @@
|
||||
#ifndef _MSL_COMMON_STRTOUL_H
|
||||
#define _MSL_COMMON_STRTOUL_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
long strtol(const char* str, char** end, int base);
|
||||
unsigned long strtoul(const char* str, char** end, int base);
|
||||
unsigned long __strtoul(int base, int max_width, int (*ReadProc)(void*, int, int), void* ReadProcArg, int* chars_scanned, int* negative,
|
||||
int* overflow);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _MSL_COMMON_STRTOUL_H */
|
||||
@@ -0,0 +1,19 @@
|
||||
#ifndef MSL_WCHAR_H
|
||||
#define MSL_WCHAR_H
|
||||
#include "common.h"
|
||||
#include "limits.h"
|
||||
#include "mbstring.h"
|
||||
#include "wprintf.h"
|
||||
#include "wstring.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#define WCHAR_MIN SHRT_MIN
|
||||
#define WCHAR_MAX USHRT_MAX
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
@@ -0,0 +1,12 @@
|
||||
#ifndef _MSL_COMMON_WCHAR_IO_H
|
||||
#define _MSL_COMMON_WCHAR_IO_H
|
||||
|
||||
#include "ansi_files.h"
|
||||
|
||||
#ifndef __cplusplus
|
||||
typedef unsigned short wchar_t;
|
||||
#endif
|
||||
|
||||
int fwide(FILE* file, int mode);
|
||||
|
||||
#endif /* _MSL_COMMON_WCHAR_IO_H */
|
||||
@@ -0,0 +1,17 @@
|
||||
#ifndef MSL_WPRINTF_H
|
||||
#define MSL_WPRINTF_H
|
||||
|
||||
#include "__va_arg.h"
|
||||
#include "common.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
int vswprintf(wchar_t *, size_t, const wchar_t *, va_list);
|
||||
int swprintf(wchar_t *, size_t, const wchar_t *, ...);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
@@ -0,0 +1,18 @@
|
||||
#ifndef MSL_WSTRING_H
|
||||
#define MSL_WSTRING_H
|
||||
#include "common.h"
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
size_t wcslen(const wchar_t *);
|
||||
wchar_t *wcscpy(wchar_t *, const wchar_t *);
|
||||
wchar_t *wcsncpy(wchar_t *, const wchar_t *, size_t);
|
||||
wchar_t *wcscat(wchar_t *, const wchar_t *);
|
||||
int wcscmp(const wchar_t *, const wchar_t *);
|
||||
wchar_t *wcschr(const wchar_t *, wchar_t);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
@@ -0,0 +1,147 @@
|
||||
#include "FILE_POS.h"
|
||||
#include "critical_regions.h"
|
||||
#include "errno.h"
|
||||
|
||||
/* 80365E90-80365F74 3607D0 00E4+00 0/0 2/2 0/0 .text ftell */
|
||||
long ftell(FILE* stream) {
|
||||
int retval;
|
||||
|
||||
__begin_critical_region(stdin_access);
|
||||
retval = (long)_ftell(stream);
|
||||
__end_critical_region(stdin_access);
|
||||
return retval;
|
||||
}
|
||||
|
||||
int _ftell(FILE* file) {
|
||||
int charsInUndoBuffer = 0;
|
||||
int position;
|
||||
|
||||
unsigned char tmp_kind = file->file_mode.file_kind;
|
||||
if (!(tmp_kind == __disk_file || tmp_kind == __console_file) || file->file_state.error) {
|
||||
errno = 0x28;
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (file->file_state.io_state == __neutral)
|
||||
return (file->position);
|
||||
|
||||
position = file->buffer_position + (file->buffer_ptr - file->buffer);
|
||||
|
||||
if (file->file_state.io_state >= __rereading) {
|
||||
charsInUndoBuffer = file->file_state.io_state - __rereading + 1;
|
||||
position -= charsInUndoBuffer;
|
||||
}
|
||||
|
||||
if (!file->file_mode.binary_io) {
|
||||
int n = file->buffer_ptr - file->buffer - charsInUndoBuffer;
|
||||
unsigned char* p = (unsigned char*)file->buffer;
|
||||
|
||||
while (n--)
|
||||
if (*p++ == '\n')
|
||||
position++;
|
||||
}
|
||||
|
||||
return (position);
|
||||
}
|
||||
|
||||
/* 80365C20-80365E90 360560 0270+00 1/1 0/0 0/0 .text _fseek */
|
||||
int _fseek(FILE* file, unsigned long offset, int whence) {
|
||||
int bufferCode;
|
||||
int pos;
|
||||
int adjust;
|
||||
unsigned long state;
|
||||
int buffLen;
|
||||
|
||||
unsigned char* ptr;
|
||||
|
||||
if (file->file_mode.file_kind != 1 || file->file_state.error != 0) {
|
||||
errno = 0x28;
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (file->file_state.io_state == 1) {
|
||||
if (__flush_buffer(file, NULL) != 0) {
|
||||
file->file_state.error = 1;
|
||||
file->buffer_length = 0;
|
||||
errno = 0x28;
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
if (whence == SEEK_CUR) {
|
||||
whence = SEEK_SET;
|
||||
adjust = 0;
|
||||
if ((file->file_mode.file_kind != 1 && file->file_mode.file_kind != 2) ||
|
||||
file->file_state.error != 0)
|
||||
{
|
||||
errno = 0x28;
|
||||
pos = -1;
|
||||
} else {
|
||||
state = file->file_state.io_state;
|
||||
if (state == 0) {
|
||||
pos = file->position;
|
||||
} else {
|
||||
pos = file->buffer_position;
|
||||
ptr = file->buffer;
|
||||
buffLen = (file->buffer_ptr - ptr);
|
||||
pos += buffLen;
|
||||
if ((state >= 3)) {
|
||||
adjust = (state - 2);
|
||||
pos -= adjust;
|
||||
}
|
||||
|
||||
if (file->file_mode.binary_io == 0) {
|
||||
int i;
|
||||
for (i = (buffLen - adjust); i != 0; i--) {
|
||||
unsigned char c = *ptr;
|
||||
ptr++;
|
||||
if (c == 10) {
|
||||
pos++;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
offset += pos;
|
||||
}
|
||||
|
||||
if ((whence != SEEK_END) && (file->file_mode.io_mode != 3) &&
|
||||
(file->file_state.io_state == 2 || file->file_state.io_state == 3))
|
||||
{
|
||||
if ((offset >= file->position) || !(offset >= file->buffer_position)) {
|
||||
file->file_state.io_state = 0;
|
||||
} else {
|
||||
file->buffer_ptr = file->buffer + (offset - file->buffer_position);
|
||||
file->buffer_length = file->position - offset;
|
||||
file->file_state.io_state = 2;
|
||||
}
|
||||
} else {
|
||||
file->file_state.io_state = 0;
|
||||
}
|
||||
|
||||
if (file->file_state.io_state == 0) {
|
||||
if (file->position_fn != NULL &&
|
||||
(int)file->position_fn(file->handle, &offset, whence, file->idle_fn))
|
||||
{
|
||||
file->file_state.error = 1;
|
||||
file->buffer_length = 0;
|
||||
errno = 0x28;
|
||||
return -1;
|
||||
} else {
|
||||
file->file_state.eof = 0;
|
||||
file->position = offset;
|
||||
file->buffer_length = 0;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* 80365BB4-80365C20 3604F4 006C+00 0/0 2/2 0/0 .text fseek */
|
||||
int fseek(FILE* stream, unsigned long offset, int whence) {
|
||||
int code;
|
||||
__begin_critical_region(stdin_access);
|
||||
code = _fseek(stream, offset, whence); // 0 if successful, -1 if error
|
||||
__end_critical_region(stdin_access);
|
||||
return code;
|
||||
}
|
||||
@@ -0,0 +1,77 @@
|
||||
#include "abort_exit.h"
|
||||
#include "critical_regions.h"
|
||||
#include "stddef.h"
|
||||
|
||||
extern void (*_dtors[])(void);
|
||||
|
||||
/* 8044D440-8044D540 07A160 0100+00 2/2 0/0 0/0 .bss __atexit_funcs */
|
||||
static void (*__atexit_funcs[64])(void);
|
||||
|
||||
/* 8045199C-804519A0 000E9C 0004+00 2/2 0/0 0/0 .sbss __console_exit */
|
||||
static void (*__console_exit)(void);
|
||||
|
||||
/* 80451998-8045199C 000E98 0004+00 1/1 1/1 0/0 .sbss __stdio_exit */
|
||||
void (*__stdio_exit)(void);
|
||||
|
||||
/* 80451994-80451998 000E94 0004+00 2/2 0/0 0/0 .sbss __atexit_curr_func */
|
||||
static int __atexit_curr_func;
|
||||
|
||||
/* 80451990-80451994 000E90 0004+00 2/2 0/0 0/0 .sbss __aborting */
|
||||
static int __aborting;
|
||||
|
||||
/* 80362ABC-80362B58 35D3FC 009C+00 0/0 9/9 0/0 .text abort */
|
||||
void abort(void) {
|
||||
raise(1);
|
||||
__aborting = 1;
|
||||
__begin_critical_region(atexit_funcs_access);
|
||||
|
||||
while (__atexit_curr_func > 0)
|
||||
__atexit_funcs[--__atexit_curr_func]();
|
||||
|
||||
__end_critical_region(atexit_funcs_access);
|
||||
__kill_critical_regions();
|
||||
|
||||
if (__console_exit != NULL) {
|
||||
__console_exit();
|
||||
__console_exit = NULL;
|
||||
}
|
||||
|
||||
_ExitProcess();
|
||||
}
|
||||
|
||||
/* 803629CC-80362ABC 35D30C 00F0+00 0/0 2/2 0/0 .text exit */
|
||||
void exit(int status) {
|
||||
int i;
|
||||
void (**dtor)(void);
|
||||
|
||||
if (!__aborting) {
|
||||
__begin_critical_region(atexit_funcs_access);
|
||||
__end_critical_region(atexit_funcs_access);
|
||||
__destroy_global_chain();
|
||||
|
||||
dtor = _dtors;
|
||||
while (*dtor != NULL) {
|
||||
(*dtor)();
|
||||
dtor++;
|
||||
}
|
||||
|
||||
if (__stdio_exit != NULL) {
|
||||
__stdio_exit();
|
||||
__stdio_exit = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
__begin_critical_region(atexit_funcs_access);
|
||||
while (__atexit_curr_func > 0)
|
||||
__atexit_funcs[--__atexit_curr_func]();
|
||||
|
||||
__end_critical_region(atexit_funcs_access);
|
||||
__kill_critical_regions();
|
||||
|
||||
if (__console_exit != NULL) {
|
||||
__console_exit();
|
||||
__console_exit = NULL;
|
||||
}
|
||||
|
||||
_ExitProcess();
|
||||
}
|
||||
@@ -0,0 +1,334 @@
|
||||
#include "alloc.h"
|
||||
#include "critical_regions.h"
|
||||
|
||||
typedef struct Block {
|
||||
struct Block* prev;
|
||||
struct Block* next;
|
||||
unsigned long max_size;
|
||||
unsigned long size;
|
||||
} Block;
|
||||
|
||||
typedef struct SubBlock {
|
||||
unsigned long size;
|
||||
Block* block;
|
||||
struct SubBlock* prev;
|
||||
struct SubBlock* next;
|
||||
} SubBlock;
|
||||
|
||||
struct FixSubBlock;
|
||||
|
||||
typedef struct FixBlock {
|
||||
struct FixBlock* prev_;
|
||||
struct FixBlock* next_;
|
||||
unsigned long client_size_;
|
||||
struct FixSubBlock* start_;
|
||||
unsigned long n_allocated_;
|
||||
} FixBlock;
|
||||
|
||||
typedef struct FixSubBlock {
|
||||
FixBlock* block_;
|
||||
struct FixSubBlock* next_;
|
||||
} FixSubBlock;
|
||||
|
||||
typedef struct FixStart {
|
||||
FixBlock* tail_;
|
||||
FixBlock* head_;
|
||||
} FixStart;
|
||||
|
||||
typedef struct __mem_pool_obj {
|
||||
Block* start_;
|
||||
FixStart fix_start[6];
|
||||
} __mem_pool_obj;
|
||||
|
||||
typedef struct __mem_pool {
|
||||
void* reserved[14];
|
||||
} __mem_pool;
|
||||
|
||||
typedef long tag_word;
|
||||
|
||||
typedef struct block_header {
|
||||
tag_word tag;
|
||||
struct block_header* prev;
|
||||
struct block_header* next;
|
||||
} block_header;
|
||||
|
||||
typedef struct list_header {
|
||||
block_header* rover;
|
||||
block_header header;
|
||||
} list_header;
|
||||
|
||||
typedef struct heap_header {
|
||||
struct heap_header* prev;
|
||||
struct heap_header* next;
|
||||
} heap_header;
|
||||
|
||||
struct mem_pool_obj;
|
||||
typedef void* (*sys_alloc_ptr)(unsigned long, struct mem_pool_obj*);
|
||||
typedef void (*sys_free_ptr)(void*, struct mem_pool_obj*);
|
||||
|
||||
typedef struct pool_options {
|
||||
sys_alloc_ptr sys_alloc_func;
|
||||
sys_free_ptr sys_free_func;
|
||||
unsigned long min_heap_size;
|
||||
int always_search_first;
|
||||
} pool_options;
|
||||
|
||||
typedef struct mem_pool_obj {
|
||||
list_header free_list;
|
||||
pool_options options;
|
||||
heap_header* heap_list;
|
||||
void* userData;
|
||||
|
||||
} mem_pool_obj;
|
||||
|
||||
mem_pool_obj __malloc_pool;
|
||||
static int initialized = 0;
|
||||
|
||||
static SubBlock* SubBlock_merge_prev(SubBlock*, SubBlock**);
|
||||
static void SubBlock_merge_next(SubBlock*, SubBlock**);
|
||||
|
||||
static const unsigned long fix_pool_sizes[] = {4, 12, 20, 36, 52, 68};
|
||||
|
||||
#define SubBlock_size(ths) ((ths)->size & 0xFFFFFFF8)
|
||||
#define SubBlock_block(ths) ((Block*)((unsigned long)((ths)->block) & ~0x1))
|
||||
#define Block_size(ths) ((ths)->size & 0xFFFFFFF8)
|
||||
#define Block_start(ths) (*(SubBlock**)((char*)(ths) + Block_size((ths)) - sizeof(unsigned long)))
|
||||
|
||||
#define SubBlock_set_free(ths) \
|
||||
unsigned long this_size = SubBlock_size((ths)); \
|
||||
(ths)->size &= ~0x2; \
|
||||
*(unsigned long*)((char*)(ths) + this_size) &= ~0x4; \
|
||||
*(unsigned long*)((char*)(ths) + this_size - sizeof(unsigned long)) = this_size
|
||||
|
||||
#define SubBlock_is_free(ths) !((ths)->size & 2)
|
||||
#define SubBlock_set_size(ths, sz) \
|
||||
(ths)->size &= ~0xFFFFFFF8; \
|
||||
(ths)->size |= (sz) & 0xFFFFFFF8; \
|
||||
if (SubBlock_is_free((ths))) \
|
||||
*(unsigned long*)((char*)(ths) + (sz) - sizeof(unsigned long)) = (sz)
|
||||
|
||||
#define SubBlock_from_pointer(ptr) ((SubBlock*)((char*)(ptr)-8))
|
||||
#define FixSubBlock_from_pointer(ptr) ((FixSubBlock*)((char*)(ptr)-4))
|
||||
|
||||
#define FixBlock_client_size(ths) ((ths)->client_size_)
|
||||
#define FixSubBlock_size(ths) (FixBlock_client_size((ths)->block_))
|
||||
|
||||
#define classify(ptr) (*(unsigned long*)((char*)(ptr) - sizeof(unsigned long)) & 1)
|
||||
#define __msize_inline(ptr) \
|
||||
(!classify(ptr) ? FixSubBlock_size(FixSubBlock_from_pointer(ptr)) : \
|
||||
SubBlock_size(SubBlock_from_pointer(ptr)) - 8)
|
||||
|
||||
#define Block_empty(ths) \
|
||||
(_sb = (SubBlock*)((char*)(ths) + 16)), \
|
||||
SubBlock_is_free(_sb) && SubBlock_size(_sb) == Block_size((ths)) - 24
|
||||
|
||||
void __sys_free();
|
||||
|
||||
static inline SubBlock* SubBlock_merge_prev(SubBlock* ths, SubBlock** start) {
|
||||
unsigned long prevsz;
|
||||
SubBlock* p;
|
||||
|
||||
if (!(ths->size & 0x04)) {
|
||||
prevsz = *(unsigned long*)((char*)ths - sizeof(unsigned long));
|
||||
if (prevsz & 0x2)
|
||||
return ths;
|
||||
p = (SubBlock*)((char*)ths - prevsz);
|
||||
SubBlock_set_size(p, prevsz + SubBlock_size(ths));
|
||||
|
||||
if (*start == ths)
|
||||
*start = (*start)->next;
|
||||
ths->next->prev = ths->prev;
|
||||
ths->next->prev->next = ths->next;
|
||||
return p;
|
||||
}
|
||||
return ths;
|
||||
}
|
||||
|
||||
static inline void SubBlock_merge_next(SubBlock* pBlock, SubBlock** pStart) {
|
||||
SubBlock* next_sub_block;
|
||||
unsigned long this_cur_size;
|
||||
|
||||
next_sub_block = (SubBlock*)((char*)pBlock + (pBlock->size & 0xFFFFFFF8));
|
||||
|
||||
if (!(next_sub_block->size & 2)) {
|
||||
this_cur_size = (pBlock->size & 0xFFFFFFF8) + (next_sub_block->size & 0xFFFFFFF8);
|
||||
|
||||
pBlock->size &= ~0xFFFFFFF8;
|
||||
pBlock->size |= this_cur_size & 0xFFFFFFF8;
|
||||
|
||||
if (!(pBlock->size & 2)) {
|
||||
*(unsigned long*)((char*)(pBlock) + (this_cur_size)-4) = (this_cur_size);
|
||||
}
|
||||
|
||||
if (!(pBlock->size & 2)) {
|
||||
*(unsigned long*)((char*)pBlock + this_cur_size) &= ~4;
|
||||
} else {
|
||||
*(unsigned long*)((char*)pBlock + this_cur_size) |= 4;
|
||||
}
|
||||
|
||||
if (*pStart == next_sub_block) {
|
||||
*pStart = (*pStart)->next;
|
||||
}
|
||||
|
||||
if (*pStart == next_sub_block) {
|
||||
*pStart = 0;
|
||||
}
|
||||
|
||||
next_sub_block->next->prev = next_sub_block->prev;
|
||||
next_sub_block->prev->next = next_sub_block->next;
|
||||
}
|
||||
}
|
||||
|
||||
inline void Block_link(Block* ths, SubBlock* sb) {
|
||||
SubBlock** st;
|
||||
SubBlock_set_free(sb);
|
||||
st = &Block_start(ths);
|
||||
|
||||
if (*st != 0) {
|
||||
sb->prev = (*st)->prev;
|
||||
sb->prev->next = sb;
|
||||
sb->next = *st;
|
||||
(*st)->prev = sb;
|
||||
*st = sb;
|
||||
*st = SubBlock_merge_prev(*st, st);
|
||||
SubBlock_merge_next(*st, st);
|
||||
} else {
|
||||
*st = sb;
|
||||
sb->prev = sb;
|
||||
sb->next = sb;
|
||||
}
|
||||
if (ths->max_size < SubBlock_size(*st))
|
||||
ths->max_size = SubBlock_size(*st);
|
||||
}
|
||||
|
||||
static inline Block* __unlink(__mem_pool_obj* pool_obj, Block* bp) {
|
||||
Block* result = bp->next;
|
||||
if (result == bp) {
|
||||
result = 0;
|
||||
}
|
||||
|
||||
if (pool_obj->start_ == bp) {
|
||||
pool_obj->start_ = result;
|
||||
}
|
||||
|
||||
if (result != 0) {
|
||||
result->prev = bp->prev;
|
||||
result->prev->next = result;
|
||||
}
|
||||
|
||||
bp->next = 0;
|
||||
bp->prev = 0;
|
||||
return result;
|
||||
}
|
||||
|
||||
/* 80362D78-8036300C 35D6B8 0294+00 2/2 0/0 0/0 .text deallocate_from_var_pools */
|
||||
static void deallocate_from_var_pools(__mem_pool_obj* pool_obj, void* ptr) {
|
||||
SubBlock* sb = SubBlock_from_pointer(ptr);
|
||||
SubBlock* _sb;
|
||||
|
||||
Block* bp = SubBlock_block(sb);
|
||||
Block_link(bp, sb);
|
||||
|
||||
if (Block_empty(bp)) {
|
||||
__unlink(pool_obj, bp);
|
||||
__sys_free(bp);
|
||||
}
|
||||
}
|
||||
|
||||
inline void __init_pool_obj(__mem_pool* pool_obj) {
|
||||
memset(pool_obj, 0, sizeof(__mem_pool_obj));
|
||||
}
|
||||
|
||||
static inline __mem_pool* get_malloc_pool(void) {
|
||||
static __mem_pool protopool;
|
||||
static unsigned char init = 0;
|
||||
if (!init) {
|
||||
__init_pool_obj(&protopool);
|
||||
init = 1;
|
||||
}
|
||||
|
||||
return &protopool;
|
||||
}
|
||||
|
||||
/* 80362C20-80362D78 35D560 0158+00 1/1 0/0 0/0 .text deallocate_from_fixed_pools */
|
||||
void deallocate_from_fixed_pools(__mem_pool_obj* pool_obj, void* ptr, unsigned long size) {
|
||||
unsigned long i = 0;
|
||||
FixSubBlock* p;
|
||||
FixBlock* b;
|
||||
FixStart* fs;
|
||||
|
||||
while (size > fix_pool_sizes[i]) {
|
||||
++i;
|
||||
}
|
||||
|
||||
fs = &pool_obj->fix_start[i];
|
||||
p = FixSubBlock_from_pointer(ptr);
|
||||
b = p->block_;
|
||||
|
||||
if (b->start_ == 0 && fs->head_ != b) {
|
||||
if (fs->tail_ == b) {
|
||||
fs->head_ = fs->head_->prev_;
|
||||
fs->tail_ = fs->tail_->prev_;
|
||||
} else {
|
||||
b->prev_->next_ = b->next_;
|
||||
b->next_->prev_ = b->prev_;
|
||||
b->next_ = fs->head_;
|
||||
b->prev_ = b->next_->prev_;
|
||||
b->prev_->next_ = b;
|
||||
b->next_->prev_ = b;
|
||||
fs->head_ = b;
|
||||
}
|
||||
}
|
||||
|
||||
p->next_ = b->start_;
|
||||
b->start_ = p;
|
||||
|
||||
if (--b->n_allocated_ == 0) {
|
||||
if (fs->head_ == b) {
|
||||
fs->head_ = b->next_;
|
||||
}
|
||||
|
||||
if (fs->tail_ == b) {
|
||||
fs->tail_ = b->prev_;
|
||||
}
|
||||
|
||||
b->prev_->next_ = b->next_;
|
||||
b->next_->prev_ = b->prev_;
|
||||
|
||||
if (fs->head_ == b) {
|
||||
fs->head_ = 0;
|
||||
}
|
||||
|
||||
if (fs->tail_ == b) {
|
||||
fs->tail_ = 0;
|
||||
}
|
||||
|
||||
deallocate_from_var_pools(pool_obj, b);
|
||||
}
|
||||
}
|
||||
|
||||
/* 80362BC8-80362C20 35D508 0058+00 1/1 0/0 0/0 .text __pool_free */
|
||||
void __pool_free(__mem_pool* pool, void* ptr) {
|
||||
__mem_pool_obj* pool_obj;
|
||||
unsigned long size;
|
||||
|
||||
if (ptr == 0) {
|
||||
return;
|
||||
}
|
||||
|
||||
pool_obj = (__mem_pool_obj*)pool;
|
||||
size = __msize_inline(ptr);
|
||||
|
||||
if (size <= 68) {
|
||||
deallocate_from_fixed_pools(pool_obj, ptr, size);
|
||||
} else {
|
||||
deallocate_from_var_pools(pool_obj, ptr);
|
||||
}
|
||||
}
|
||||
|
||||
/* 80362B58-80362BC8 35D498 0070+00 0/0 2/2 0/0 .text free */
|
||||
void free(void* ptr) {
|
||||
__begin_critical_region(malloc_pool_access);
|
||||
__pool_free(get_malloc_pool(), ptr);
|
||||
__end_critical_region(malloc_pool_access);
|
||||
}
|
||||
@@ -0,0 +1,158 @@
|
||||
#include "ansi_files.h"
|
||||
#include "critical_regions.h"
|
||||
|
||||
/* 8044D778-8044D878 07A498 0100+00 1/0 0/0 0/0 .bss stdin_buff */
|
||||
static unsigned char stdin_buff[0x100];
|
||||
|
||||
/* 8044D678-8044D778 07A398 0100+00 1/0 0/0 0/0 .bss stdout_buff */
|
||||
static unsigned char stdout_buff[0x100];
|
||||
|
||||
/* 8044D578-8044D678 07A298 0100+00 1/0 0/0 0/0 .bss stderr_buff */
|
||||
static unsigned char stderr_buff[0x100];
|
||||
|
||||
/* 803D29B0-803D2AF0 -00001 0140+00 3/2 15/15 0/0 .data __files */
|
||||
extern files __files = {
|
||||
{
|
||||
0,
|
||||
0,
|
||||
1,
|
||||
1,
|
||||
2,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
{0, 0},
|
||||
{0, 0},
|
||||
0,
|
||||
stdin_buff,
|
||||
0x00000100,
|
||||
stdin_buff,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
NULL,
|
||||
__read_console,
|
||||
__write_console,
|
||||
__close_console,
|
||||
NULL,
|
||||
&__files._stdout,
|
||||
},
|
||||
{
|
||||
1,
|
||||
0,
|
||||
2,
|
||||
1,
|
||||
2,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
{0, 0},
|
||||
{0, 0},
|
||||
0,
|
||||
stdout_buff,
|
||||
0x00000100,
|
||||
stdout_buff,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
NULL,
|
||||
__read_console,
|
||||
__write_console,
|
||||
__close_console,
|
||||
NULL,
|
||||
&__files._stderr,
|
||||
},
|
||||
{
|
||||
2,
|
||||
0,
|
||||
2,
|
||||
0,
|
||||
2,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
{0, 0},
|
||||
{0, 0},
|
||||
0,
|
||||
stderr_buff,
|
||||
0x00000100,
|
||||
stderr_buff,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
NULL,
|
||||
__read_console,
|
||||
__write_console,
|
||||
__close_console,
|
||||
NULL,
|
||||
&__files.empty,
|
||||
},
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0},
|
||||
{0, 0}, 0, NULL, 0x00000000, NULL, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL, NULL,
|
||||
},
|
||||
};
|
||||
|
||||
/* 8036307C-80363124 35D9BC 00A8+00 0/0 1/1 0/0 .text __close_all */
|
||||
void __close_all(void) {
|
||||
FILE* file = &__files._stdin;
|
||||
FILE* last_file;
|
||||
|
||||
__begin_critical_region(stdin_access);
|
||||
|
||||
while (file != NULL) {
|
||||
if (file->file_mode.file_kind != __closed_file) {
|
||||
fclose(file);
|
||||
}
|
||||
|
||||
last_file = file;
|
||||
file = file->next_file;
|
||||
|
||||
if (last_file->is_dynamically_allocated) {
|
||||
free(last_file);
|
||||
} else {
|
||||
last_file->file_mode.file_kind = __unavailable_file;
|
||||
if (file != NULL && file->is_dynamically_allocated) {
|
||||
last_file->next_file = NULL;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
__end_critical_region(stdin_access);
|
||||
}
|
||||
|
||||
/* 8036300C-8036307C 35D94C 0070+00 0/0 2/2 0/0 .text __flush_all */
|
||||
unsigned int __flush_all(void) {
|
||||
unsigned int ret = 0;
|
||||
FILE* file = &__files._stdin;
|
||||
|
||||
while (file) {
|
||||
if (file->file_mode.file_kind != __closed_file && fflush(file)) {
|
||||
ret = -1;
|
||||
}
|
||||
file = file->next_file;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
@@ -0,0 +1,30 @@
|
||||
#include "arith.h"
|
||||
|
||||
/* 803650D0-803650E0 35FA10 0010+00 0/0 66/66 225/225 .text abs */
|
||||
int abs(int n) {
|
||||
if (n < 0)
|
||||
return (-n);
|
||||
else
|
||||
return (n);
|
||||
}
|
||||
|
||||
/* 80365078-803650D0 35F9B8 0058+00 0/0 1/1 0/0 .text div */
|
||||
div_t div(int numerator, int denominator) {
|
||||
div_t ret;
|
||||
int i = 1;
|
||||
int j = 1;
|
||||
|
||||
if (numerator < 0 ) {
|
||||
numerator = -numerator;
|
||||
i = -1;
|
||||
}
|
||||
|
||||
if (denominator < 0) {
|
||||
denominator = -denominator;
|
||||
j = -1;
|
||||
}
|
||||
|
||||
ret.quot = (numerator / denominator) * (i * j);
|
||||
ret.rem = numerator * i - j * (ret.quot * denominator);
|
||||
return ret;
|
||||
}
|
||||
@@ -0,0 +1,43 @@
|
||||
#include "buffer_io.h"
|
||||
|
||||
void __convert_from_newlines(unsigned char* buf, size_t* n) {}
|
||||
|
||||
void __convert_to_newlines(unsigned char* buf, size_t* n) {}
|
||||
|
||||
/* 803651A4-803651D8 35FAE4 0034+00 0/0 2/2 0/0 .text __prep_buffer */
|
||||
void __prep_buffer(FILE* file) {
|
||||
file->buffer_ptr = file->buffer;
|
||||
file->buffer_length = file->buffer_size;
|
||||
file->buffer_length -= file->position & file->buffer_alignment;
|
||||
file->buffer_position = file->position;
|
||||
}
|
||||
|
||||
/* 803650E0-803651A4 35FA20 00C4+00 0/0 5/5 0/0 .text __flush_buffer */
|
||||
int __flush_buffer(FILE* file, size_t* bytes_flushed) {
|
||||
size_t buffer_len;
|
||||
int ioresult;
|
||||
|
||||
buffer_len = file->buffer_ptr - file->buffer;
|
||||
|
||||
if (buffer_len) {
|
||||
file->buffer_length = buffer_len;
|
||||
|
||||
if (!file->file_mode.binary_io)
|
||||
__convert_from_newlines(file->buffer, (size_t*)&file->buffer_length);
|
||||
|
||||
ioresult = (*file->write_fn)(file->handle, file->buffer, (size_t*)&file->buffer_length,
|
||||
file->idle_fn);
|
||||
|
||||
if (bytes_flushed)
|
||||
*bytes_flushed = file->buffer_length;
|
||||
|
||||
if (ioresult)
|
||||
return (ioresult);
|
||||
|
||||
file->position += file->buffer_length;
|
||||
}
|
||||
|
||||
__prep_buffer(file);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@@ -0,0 +1,98 @@
|
||||
#include "char_io.h"
|
||||
#include "critical_regions.h"
|
||||
#include "misc_io.h"
|
||||
#include "wchar_io.h"
|
||||
|
||||
/* 803652AC-80365464 35FBEC 01B8+00 1/1 0/0 0/0 .text __put_char */
|
||||
int __put_char(int c, FILE* stream) {
|
||||
int ret;
|
||||
|
||||
int file_kind = stream->file_mode.file_kind;
|
||||
stream->buffer_length = 0;
|
||||
|
||||
if (stream->file_state.error != 0 || file_kind == __closed_file) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (file_kind == __console_file) {
|
||||
__stdio_atexit();
|
||||
}
|
||||
|
||||
if (stream->file_state.io_state == __neutral && (stream->file_mode.io_mode & __write)) {
|
||||
if ((stream->file_mode.io_mode & __append) && fseek(stream, 0, 2) != 0) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
stream->file_state.io_state = __writing;
|
||||
__prep_buffer(stream);
|
||||
}
|
||||
|
||||
if (stream->file_state.io_state != __writing) {
|
||||
stream->file_state.error = 1;
|
||||
ret = -1;
|
||||
stream->buffer_length = 0;
|
||||
} else if ((stream->file_mode.buffer_mode == 2 ||
|
||||
stream->buffer_size ==
|
||||
(unsigned int)stream->buffer_ptr - (unsigned int)stream->buffer) &&
|
||||
__flush_buffer(stream, NULL) != 0)
|
||||
{
|
||||
stream->file_state.error = 1;
|
||||
ret = -1;
|
||||
stream->buffer_length = 0;
|
||||
} else {
|
||||
stream->buffer_length--;
|
||||
*stream->buffer_ptr++ = c;
|
||||
|
||||
if (stream->file_mode.buffer_mode != 2) {
|
||||
if ((stream->file_mode.buffer_mode == 0 || c == 10) &&
|
||||
__flush_buffer(stream, NULL) != 0)
|
||||
{
|
||||
stream->file_state.error = 1;
|
||||
ret = -1;
|
||||
stream->buffer_length = 0;
|
||||
goto exit;
|
||||
}
|
||||
stream->buffer_length = 0;
|
||||
}
|
||||
|
||||
ret = c & 0xFF;
|
||||
}
|
||||
|
||||
exit:
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* 803651D8-803652AC 35FB18 00D4+00 0/0 1/1 0/0 .text fputs */
|
||||
int fputs(const char* s, FILE* stream) {
|
||||
char c;
|
||||
int var_r3;
|
||||
unsigned long len;
|
||||
int ret = 0;
|
||||
|
||||
__begin_critical_region(stdin_access);
|
||||
while (c = *s++, c != 0) {
|
||||
if (fwide(stream, -1) >= 0) {
|
||||
var_r3 = -1;
|
||||
} else {
|
||||
len = stream->buffer_length;
|
||||
stream->buffer_length = len - 1;
|
||||
|
||||
if (len != 0) {
|
||||
char* buf = (char*)stream->buffer_ptr;
|
||||
stream->buffer_ptr++;
|
||||
|
||||
*buf = var_r3 = c & 0xFF;
|
||||
} else {
|
||||
var_r3 = __put_char(c, stream);
|
||||
}
|
||||
}
|
||||
|
||||
if (var_r3 == -1) {
|
||||
ret = -1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
__end_critical_region(stdin_access);
|
||||
|
||||
return ret;
|
||||
}
|
||||
@@ -0,0 +1,82 @@
|
||||
#include "ctype.h"
|
||||
|
||||
#define ctrl __control_char
|
||||
#define motn __motion_char
|
||||
#define spac __space_char
|
||||
#define punc __punctuation
|
||||
#define digi __digit
|
||||
#define hexd __hex_digit
|
||||
#define lowc __lower_case
|
||||
#define uppc __upper_case
|
||||
#define dhex (hexd | digi)
|
||||
#define uhex (hexd | uppc)
|
||||
#define lhex (hexd | lowc)
|
||||
|
||||
/* 803D2C18-803D2D18 02FD38 0100+00 0/0 3/3 0/0 .data __ctype_map */
|
||||
unsigned char __ctype_map[256] = {
|
||||
// clang-format off
|
||||
ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, motn, motn, motn, motn, motn, ctrl, ctrl,
|
||||
ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, ctrl, ctrl,
|
||||
spac, punc, punc, punc, punc, punc, punc, punc, punc, punc, punc, punc, punc, punc, punc, punc,
|
||||
dhex, dhex, dhex, dhex, dhex, dhex, dhex, dhex, dhex, dhex, punc, punc, punc, punc, punc, punc,
|
||||
punc, uhex, uhex, uhex, uhex, uhex, uhex, uppc, uppc, uppc, uppc, uppc, uppc, uppc, uppc, uppc,
|
||||
uppc, uppc, uppc, uppc, uppc, uppc, uppc, uppc, uppc, uppc, uppc, punc, punc, punc, punc, punc,
|
||||
punc, lhex, lhex, lhex, lhex, lhex, lhex, lowc, lowc, lowc, lowc, lowc, lowc, lowc, lowc, lowc,
|
||||
lowc, lowc, lowc, lowc, lowc, lowc, lowc, lowc, lowc, lowc, lowc, punc, punc, punc, punc, ctrl,
|
||||
// clang-format on
|
||||
};
|
||||
|
||||
/* 803D2D18-803D2E18 02FE38 0100+00 1/1 3/3 0/0 .data __lower_map */
|
||||
unsigned char __lower_map[256] = {
|
||||
// clang-format off
|
||||
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
|
||||
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
|
||||
' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/',
|
||||
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?',
|
||||
'@', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
|
||||
'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '[', '\\', ']', '^', '_',
|
||||
'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
|
||||
'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', 0x7F,
|
||||
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F,
|
||||
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F,
|
||||
0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF,
|
||||
0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF,
|
||||
0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
|
||||
0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
|
||||
0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
|
||||
0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF,
|
||||
// clang-format on
|
||||
};
|
||||
|
||||
/* 80365470-80365494 35FDB0 0024+00 0/0 4/4 0/0 .text tolower */
|
||||
int tolower(int __c) {
|
||||
{
|
||||
if (__c == -1) {
|
||||
return 0xffffffff;
|
||||
}
|
||||
|
||||
return (unsigned int)__lower_map[__c & 0xff];
|
||||
}
|
||||
}
|
||||
|
||||
/* ############################################################################################## */
|
||||
/* 803D2E18-803D2F18 02FF38 0100+00 0/0 1/1 0/0 .data __upper_map */
|
||||
unsigned char __upper_map[256] = {
|
||||
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
|
||||
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
|
||||
' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/',
|
||||
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?',
|
||||
'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
|
||||
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
|
||||
'`', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
|
||||
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '{', '|', '}', '~', 0x7F,
|
||||
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F,
|
||||
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F,
|
||||
0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF,
|
||||
0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF,
|
||||
0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
|
||||
0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
|
||||
0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
|
||||
0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF,
|
||||
// clang-format on
|
||||
};
|
||||
@@ -0,0 +1,121 @@
|
||||
#include "direct_io.h"
|
||||
#include "critical_regions.h"
|
||||
#include "wchar_io.h"
|
||||
|
||||
/* 80365494-803657A0 35FDD4 030C+00 1/1 0/0 0/0 .text __fwrite */
|
||||
size_t fwrite(const void* buffer, size_t size, size_t count, FILE* stream) {
|
||||
size_t retval;
|
||||
|
||||
__begin_critical_region(stdin_access);
|
||||
retval = __fwrite(buffer, size, count, stream);
|
||||
__end_critical_region(stdin_access);
|
||||
|
||||
return (retval);
|
||||
}
|
||||
|
||||
/* 803657A0-8036581C 3600E0 007C+00 0/0 1/1 0/0 .text fwrite */
|
||||
size_t __fwrite(const void* buffer, size_t size, size_t count, FILE* stream) {
|
||||
unsigned char* write_ptr;
|
||||
size_t num_bytes, bytes_to_go, bytes_written;
|
||||
int ioresult, always_buffer;
|
||||
|
||||
#ifndef __NO_WIDE_CHAR
|
||||
if (fwide(stream, 0) == 0)
|
||||
fwide(stream, -1);
|
||||
#endif
|
||||
|
||||
bytes_to_go = size * count;
|
||||
|
||||
if (!bytes_to_go || stream->file_state.error || stream->file_mode.file_kind == __closed_file)
|
||||
return 0;
|
||||
|
||||
if (stream->file_mode.file_kind == __console_file)
|
||||
__stdio_atexit();
|
||||
|
||||
always_buffer = !stream->file_mode.binary_io || stream->file_mode.buffer_mode == _IOFBF ||
|
||||
stream->file_mode.buffer_mode == _IOLBF;
|
||||
|
||||
if (stream->file_state.io_state == __neutral) {
|
||||
if (stream->file_mode.io_mode & __write) {
|
||||
if (stream->file_mode.io_mode & __append) {
|
||||
if (fseek(stream, 0, SEEK_END))
|
||||
return 0;
|
||||
}
|
||||
stream->file_state.io_state = __writing;
|
||||
|
||||
__prep_buffer(stream);
|
||||
}
|
||||
}
|
||||
|
||||
if (stream->file_state.io_state != __writing) {
|
||||
set_error(stream);
|
||||
return 0;
|
||||
}
|
||||
|
||||
write_ptr = (unsigned char*)buffer;
|
||||
bytes_written = 0;
|
||||
|
||||
if (bytes_to_go && (stream->buffer_ptr != stream->buffer || always_buffer)) {
|
||||
stream->buffer_length = stream->buffer_size - (stream->buffer_ptr - stream->buffer);
|
||||
|
||||
do {
|
||||
unsigned char* newline = NULL;
|
||||
|
||||
num_bytes = stream->buffer_length;
|
||||
|
||||
if (num_bytes > bytes_to_go)
|
||||
num_bytes = bytes_to_go;
|
||||
if (stream->file_mode.buffer_mode == _IOLBF && num_bytes)
|
||||
if ((newline = (unsigned char*)__memrchr(write_ptr, '\n', num_bytes)) != NULL)
|
||||
num_bytes = newline + 1 - write_ptr;
|
||||
|
||||
if (num_bytes) {
|
||||
memcpy(stream->buffer_ptr, write_ptr, num_bytes);
|
||||
|
||||
write_ptr += num_bytes;
|
||||
bytes_written += num_bytes;
|
||||
bytes_to_go -= num_bytes;
|
||||
|
||||
stream->buffer_ptr += num_bytes;
|
||||
stream->buffer_length -= num_bytes;
|
||||
}
|
||||
if (!stream->buffer_length || newline != NULL ||
|
||||
(stream->file_mode.buffer_mode == _IONBF))
|
||||
{
|
||||
ioresult = __flush_buffer(stream, NULL);
|
||||
|
||||
if (ioresult) {
|
||||
set_error(stream);
|
||||
bytes_to_go = 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
} while (bytes_to_go && always_buffer);
|
||||
}
|
||||
|
||||
if (bytes_to_go && !always_buffer) {
|
||||
unsigned char* save_buffer = stream->buffer;
|
||||
size_t save_size = stream->buffer_size;
|
||||
|
||||
stream->buffer = write_ptr;
|
||||
stream->buffer_size = bytes_to_go;
|
||||
stream->buffer_ptr = write_ptr + bytes_to_go;
|
||||
|
||||
if (__flush_buffer(stream, &num_bytes) != __no_io_error)
|
||||
set_error(stream);
|
||||
|
||||
bytes_written += num_bytes;
|
||||
|
||||
stream->buffer = save_buffer;
|
||||
stream->buffer_size = save_size;
|
||||
|
||||
__prep_buffer(stream);
|
||||
|
||||
stream->buffer_length = 0;
|
||||
}
|
||||
|
||||
if (stream->file_mode.buffer_mode != _IOFBF)
|
||||
stream->buffer_length = 0;
|
||||
|
||||
return ((bytes_written + size - 1) / size);
|
||||
}
|
||||
@@ -0,0 +1,4 @@
|
||||
#include "errno.h"
|
||||
|
||||
/* 804519A8-804519B0 000EA8 0004+04 0/0 6/6 0/0 .sbss errno */
|
||||
int errno;
|
||||
@@ -0,0 +1,27 @@
|
||||
#include "extras.h"
|
||||
#include "ctype.h"
|
||||
|
||||
/* 8036CA94-8036CB20 3673D4 008C+00 0/0 1/1 0/0 .text stricmp */
|
||||
int stricmp(const char* str1, const char* str2) {
|
||||
char a_var;
|
||||
char b_var;
|
||||
|
||||
do {
|
||||
b_var = _tolower(*str1++);
|
||||
a_var = _tolower(*str2++);
|
||||
|
||||
if (b_var < a_var) {
|
||||
return -1;
|
||||
}
|
||||
if (b_var > a_var) {
|
||||
return 1;
|
||||
}
|
||||
} while (b_var != 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* 8036CA74-8036CA94 3673B4 0020+00 0/0 1/1 0/0 .text strnicmp */
|
||||
int strnicmp(const char* str1, const char* str2, int n) {
|
||||
return __msl_strnicmp(str1, str2, n);
|
||||
}
|
||||
@@ -0,0 +1,95 @@
|
||||
#include "file_io.h"
|
||||
#include "ctype.h"
|
||||
|
||||
/* 803659F8-80365BB4 360338 01BC+00 0/0 1/1 0/0 .text fclose */
|
||||
int fclose(FILE* file) {
|
||||
int flush_result, close_result;
|
||||
|
||||
if (file == NULL)
|
||||
return (-1);
|
||||
if (file->file_mode.file_kind == __closed_file)
|
||||
return (0);
|
||||
|
||||
flush_result = fflush(file);
|
||||
|
||||
close_result = (*file->close_fn)(file->handle);
|
||||
|
||||
file->file_mode.file_kind = __closed_file;
|
||||
file->handle = NULL;
|
||||
|
||||
if (file->file_state.free_buffer)
|
||||
free((FILE*)file->buffer);
|
||||
return ((flush_result || close_result) ? -1 : 0);
|
||||
}
|
||||
|
||||
/* 803658C0-803659F8 360200 0138+00 0/0 4/4 0/0 .text fflush */
|
||||
int fflush(FILE* file) {
|
||||
int pos;
|
||||
|
||||
if (file == NULL) {
|
||||
return __flush_all();
|
||||
}
|
||||
|
||||
if (file->file_state.error != 0 || file->file_mode.file_kind == __closed_file) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (file->file_mode.io_mode == __read) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (file->file_state.io_state >= __rereading) {
|
||||
file->file_state.io_state = __reading;
|
||||
}
|
||||
|
||||
if (file->file_state.io_state == __reading) {
|
||||
file->buffer_length = 0;
|
||||
}
|
||||
|
||||
if (file->file_state.io_state != __writing) {
|
||||
file->file_state.io_state = __neutral;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (file->file_mode.file_kind != __disk_file) {
|
||||
pos = 0;
|
||||
} else {
|
||||
pos = ftell(file);
|
||||
}
|
||||
|
||||
if (__flush_buffer(file, 0) != 0) {
|
||||
file->file_state.error = 1;
|
||||
file->buffer_length = 0;
|
||||
return -1;
|
||||
}
|
||||
|
||||
file->file_state.io_state = __neutral;
|
||||
file->position = pos;
|
||||
file->buffer_length = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* 8036581C-803658C0 36015C 00A4+00 0/0 1/1 0/0 .text __msl_strnicmp */
|
||||
int __msl_strnicmp(const char* str1, const char* str2, int n) {
|
||||
int i;
|
||||
char c1, c2;
|
||||
|
||||
for (i = 0; i < n; i++) {
|
||||
c1 = _tolower(*str1++);
|
||||
c2 = _tolower(*str2++);
|
||||
|
||||
if (c1 < c2) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (c1 > c2) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (c1 == '\0') {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
@@ -0,0 +1,13 @@
|
||||
#include "float.h"
|
||||
|
||||
/* 80450AE0-80450AE4 000560 0004+00 0/0 204/204 1060/1060 .sdata __float_nan */
|
||||
unsigned long __float_nan[] = {0x7FFFFFFF};
|
||||
|
||||
/* 80450AE4-80450AE8 000564 0004+00 0/0 1/1 0/0 .sdata __float_huge */
|
||||
unsigned long __float_huge[] = {0x7F800000};
|
||||
|
||||
/* 80450AE8-80450AEC 000568 0004+00 0/0 18/18 14/14 .sdata __float_max */
|
||||
unsigned long __float_max[] = {0x7F7FFFFF};
|
||||
|
||||
/* 80450AEC-80450AF0 00056C 0004+00 0/0 28/28 0/0 .sdata __float_epsilon */
|
||||
unsigned long __float_epsilon[] = {0x34000000};
|
||||
@@ -0,0 +1,65 @@
|
||||
#include "mbstring.h"
|
||||
#include "string.h"
|
||||
|
||||
inline static int unicode_to_UTF8(char* s, wchar_t wchar) {
|
||||
int number_of_bytes;
|
||||
wchar_t wide_char;
|
||||
char* target_ptr;
|
||||
char first_byte_mark[4] = { 0x00, 0x00, 0xc0, 0xe0 };
|
||||
|
||||
if (!s)
|
||||
return (0);
|
||||
|
||||
wide_char = wchar;
|
||||
if (wide_char < 0x0080)
|
||||
number_of_bytes = 1;
|
||||
else if (wide_char < 0x0800)
|
||||
number_of_bytes = 2;
|
||||
else
|
||||
number_of_bytes = 3;
|
||||
|
||||
target_ptr = s + number_of_bytes;
|
||||
|
||||
switch (number_of_bytes) {
|
||||
case 3:
|
||||
*--target_ptr = (wide_char & 0x003f) | 0x80;
|
||||
wide_char >>= 6;
|
||||
case 2:
|
||||
*--target_ptr = (wide_char & 0x003f) | 0x80;
|
||||
wide_char >>= 6;
|
||||
case 1:
|
||||
*--target_ptr = wide_char | first_byte_mark[number_of_bytes];
|
||||
}
|
||||
|
||||
return number_of_bytes;
|
||||
}
|
||||
|
||||
inline int wctomb(char* s, wchar_t wchar) { return (unicode_to_UTF8(s, wchar)); }
|
||||
|
||||
/* 80365F74-8036608C 3608B4 0118+00 0/0 1/1 0/0 .text wcstombs */
|
||||
size_t wcstombs(char* s, const wchar_t* pwcs, size_t n) {
|
||||
int chars_written = 0;
|
||||
int result;
|
||||
char temp[3];
|
||||
wchar_t* source;
|
||||
|
||||
if (!s || !pwcs)
|
||||
return (0);
|
||||
|
||||
source = (wchar_t*)pwcs;
|
||||
while (chars_written <= n) {
|
||||
if (!*source) {
|
||||
*(s + chars_written) = '\0';
|
||||
break;
|
||||
} else {
|
||||
result = wctomb(temp, *source++);
|
||||
if ((chars_written + result) <= n) {
|
||||
strncpy(s + chars_written, temp, result);
|
||||
chars_written += result;
|
||||
} else
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return chars_written;
|
||||
}
|
||||
@@ -0,0 +1,85 @@
|
||||
#include "string.h"
|
||||
|
||||
/* 80366130-803661FC 360A70 00CC+00 0/0 2/2 0/0 .text memmove */
|
||||
void* memmove(void* dst, const void* src, size_t n) {
|
||||
unsigned char* csrc;
|
||||
unsigned char* cdst;
|
||||
|
||||
int reverse = (unsigned int)src < (unsigned int)dst;
|
||||
|
||||
if (n >= 32) {
|
||||
if (((unsigned int)dst ^ (unsigned int)src) & 3) {
|
||||
if (!reverse) {
|
||||
__copy_longs_unaligned(dst, src, n);
|
||||
} else {
|
||||
__copy_longs_rev_unaligned(dst, src, n);
|
||||
}
|
||||
} else {
|
||||
if (!reverse) {
|
||||
__copy_longs_aligned(dst, src, n);
|
||||
} else {
|
||||
__copy_longs_rev_aligned(dst, src, n);
|
||||
}
|
||||
}
|
||||
|
||||
return dst;
|
||||
} else {
|
||||
if (!reverse) {
|
||||
csrc = ((unsigned char*)src) - 1;
|
||||
cdst = ((unsigned char*)dst) - 1;
|
||||
n++;
|
||||
|
||||
while (--n > 0) {
|
||||
*++cdst = *++csrc;
|
||||
}
|
||||
} else {
|
||||
csrc = (unsigned char*)src + n;
|
||||
cdst = (unsigned char*)dst + n;
|
||||
n++;
|
||||
|
||||
while (--n > 0) {
|
||||
*--cdst = *--csrc;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return dst;
|
||||
}
|
||||
|
||||
/* 80366104-80366130 360A44 002C+00 0/0 1/1 0/0 .text memchr */
|
||||
void* memchr(const void* ptr, int ch, size_t count) {
|
||||
const unsigned char* p;
|
||||
|
||||
unsigned long v = (ch & 0xff);
|
||||
|
||||
for (p = (unsigned char*)ptr - 1, count++; --count;)
|
||||
if ((*++p & 0xff) == v)
|
||||
return (void*)p;
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* 803660D8-80366104 360A18 002C+00 0/0 1/1 0/0 .text __memrchr */
|
||||
void* __memrchr(const void* ptr, int ch, size_t count) {
|
||||
const unsigned char* p;
|
||||
|
||||
unsigned long v = (ch & 0xff);
|
||||
|
||||
for (p = (unsigned char*)ptr + count, count++; --count;)
|
||||
if (*--p == v)
|
||||
return (void*)p;
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* 8036608C-803660D8 3609CC 004C+00 0/0 19/19 5/5 .text memcmp */
|
||||
int memcmp(const void* lhs, const void* rhs, size_t count) {
|
||||
const unsigned char* p1;
|
||||
const unsigned char* p2;
|
||||
|
||||
for (p1 = (const unsigned char*)lhs - 1, p2 = (const unsigned char*)rhs - 1, count++; --count;)
|
||||
if (*++p1 != *++p2)
|
||||
return ((*p1 < *p2) ? -1 : +1);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@@ -0,0 +1,221 @@
|
||||
#include "mem_funcs.h"
|
||||
|
||||
#define cps ((unsigned char*)src)
|
||||
#define cpd ((unsigned char*)dst)
|
||||
#define lps ((unsigned long*)src)
|
||||
#define lpd ((unsigned long*)dst)
|
||||
#define deref_auto_inc(p) *++(p)
|
||||
|
||||
/* 80366410-803664CC 360D50 00BC+00 0/0 1/1 0/0 .text __copy_longs_aligned */
|
||||
void __copy_longs_aligned(void* dst, const void* src, size_t n) {
|
||||
unsigned long i;
|
||||
|
||||
i = (-(unsigned long)dst) & 3;
|
||||
|
||||
cps = ((unsigned char*)src) - 1;
|
||||
cpd = ((unsigned char*)dst) - 1;
|
||||
|
||||
if (i) {
|
||||
n -= i;
|
||||
|
||||
do
|
||||
deref_auto_inc(cpd) = deref_auto_inc(cps);
|
||||
while (--i);
|
||||
}
|
||||
|
||||
lps = ((unsigned long*)(cps + 1)) - 1;
|
||||
lpd = ((unsigned long*)(cpd + 1)) - 1;
|
||||
|
||||
i = n >> 5;
|
||||
|
||||
if (i)
|
||||
do {
|
||||
deref_auto_inc(lpd) = deref_auto_inc(lps);
|
||||
deref_auto_inc(lpd) = deref_auto_inc(lps);
|
||||
deref_auto_inc(lpd) = deref_auto_inc(lps);
|
||||
deref_auto_inc(lpd) = deref_auto_inc(lps);
|
||||
deref_auto_inc(lpd) = deref_auto_inc(lps);
|
||||
deref_auto_inc(lpd) = deref_auto_inc(lps);
|
||||
deref_auto_inc(lpd) = deref_auto_inc(lps);
|
||||
deref_auto_inc(lpd) = deref_auto_inc(lps);
|
||||
} while (--i);
|
||||
|
||||
i = (n & 31) >> 2;
|
||||
|
||||
if (i)
|
||||
do
|
||||
deref_auto_inc(lpd) = deref_auto_inc(lps);
|
||||
while (--i);
|
||||
|
||||
cps = ((unsigned char*)(lps + 1)) - 1;
|
||||
cpd = ((unsigned char*)(lpd + 1)) - 1;
|
||||
|
||||
n &= 3;
|
||||
|
||||
if (n)
|
||||
do
|
||||
deref_auto_inc(cpd) = deref_auto_inc(cps);
|
||||
while (--n);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
/* 80366368-80366410 360CA8 00A8+00 0/0 1/1 0/0 .text __copy_longs_rev_aligned */
|
||||
void __copy_longs_rev_aligned(void* dst, const void* src, size_t n) {
|
||||
unsigned long i;
|
||||
|
||||
cps = ((unsigned char*)src) + n;
|
||||
cpd = ((unsigned char*)dst) + n;
|
||||
|
||||
i = ((unsigned long)cpd) & 3;
|
||||
|
||||
if (i) {
|
||||
n -= i;
|
||||
|
||||
do
|
||||
*--cpd = *--cps;
|
||||
while (--i);
|
||||
}
|
||||
|
||||
i = n >> 5;
|
||||
|
||||
if (i)
|
||||
do {
|
||||
*--lpd = *--lps;
|
||||
*--lpd = *--lps;
|
||||
*--lpd = *--lps;
|
||||
*--lpd = *--lps;
|
||||
*--lpd = *--lps;
|
||||
*--lpd = *--lps;
|
||||
*--lpd = *--lps;
|
||||
*--lpd = *--lps;
|
||||
} while (--i);
|
||||
|
||||
i = (n & 31) >> 2;
|
||||
|
||||
if (i)
|
||||
do
|
||||
*--lpd = *--lps;
|
||||
while (--i);
|
||||
|
||||
n &= 3;
|
||||
|
||||
if (n)
|
||||
do
|
||||
*--cpd = *--cps;
|
||||
while (--n);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
/* 803662A8-80366368 360BE8 00C0+00 0/0 1/1 0/0 .text __copy_longs_unaligned */
|
||||
void __copy_longs_unaligned(void* dst, const void* src, size_t n) {
|
||||
unsigned long i, v1, v2;
|
||||
unsigned int src_offset, left_shift, right_shift;
|
||||
|
||||
i = (-(unsigned long)dst) & 3;
|
||||
|
||||
cps = ((unsigned char*)src) - 1;
|
||||
cpd = ((unsigned char*)dst) - 1;
|
||||
|
||||
if (i) {
|
||||
n -= i;
|
||||
|
||||
do
|
||||
deref_auto_inc(cpd) = deref_auto_inc(cps);
|
||||
while (--i);
|
||||
}
|
||||
|
||||
src_offset = ((unsigned int)(cps + 1)) & 3;
|
||||
|
||||
left_shift = src_offset << 3;
|
||||
right_shift = 32 - left_shift;
|
||||
|
||||
cps -= src_offset;
|
||||
|
||||
lps = ((unsigned long*)(cps + 1)) - 1;
|
||||
lpd = ((unsigned long*)(cpd + 1)) - 1;
|
||||
|
||||
i = n >> 3;
|
||||
|
||||
v1 = deref_auto_inc(lps);
|
||||
|
||||
do {
|
||||
v2 = deref_auto_inc(lps);
|
||||
deref_auto_inc(lpd) = (v1 << left_shift) | (v2 >> right_shift);
|
||||
v1 = deref_auto_inc(lps);
|
||||
deref_auto_inc(lpd) = (v2 << left_shift) | (v1 >> right_shift);
|
||||
} while (--i);
|
||||
|
||||
if (n & 4) {
|
||||
v2 = deref_auto_inc(lps);
|
||||
deref_auto_inc(lpd) = (v1 << left_shift) | (v2 >> right_shift);
|
||||
}
|
||||
|
||||
cps = ((unsigned char*)(lps + 1)) - 1;
|
||||
cpd = ((unsigned char*)(lpd + 1)) - 1;
|
||||
|
||||
n &= 3;
|
||||
|
||||
if (n) {
|
||||
cps -= 4 - src_offset;
|
||||
do
|
||||
deref_auto_inc(cpd) = deref_auto_inc(cps);
|
||||
while (--n);
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
/* 803661FC-803662A8 360B3C 00AC+00 0/0 1/1 0/0 .text __copy_longs_rev_unaligned */
|
||||
void __copy_longs_rev_unaligned(void* dst, const void* src, size_t n) {
|
||||
unsigned long i, v1, v2;
|
||||
unsigned int src_offset, left_shift, right_shift;
|
||||
|
||||
cps = ((unsigned char*)src) + n;
|
||||
cpd = ((unsigned char*)dst) + n;
|
||||
|
||||
i = ((unsigned long)cpd) & 3;
|
||||
|
||||
if (i) {
|
||||
n -= i;
|
||||
|
||||
do
|
||||
*--cpd = *--cps;
|
||||
while (--i);
|
||||
}
|
||||
|
||||
src_offset = ((unsigned int)cps) & 3;
|
||||
|
||||
left_shift = src_offset << 3;
|
||||
right_shift = 32 - left_shift;
|
||||
|
||||
cps += 4 - src_offset;
|
||||
|
||||
i = n >> 3;
|
||||
|
||||
v1 = *--lps;
|
||||
|
||||
do {
|
||||
v2 = *--lps;
|
||||
*--lpd = (v2 << left_shift) | (v1 >> right_shift);
|
||||
v1 = *--lps;
|
||||
*--lpd = (v1 << left_shift) | (v2 >> right_shift);
|
||||
} while (--i);
|
||||
|
||||
if (n & 4) {
|
||||
v2 = *--lps;
|
||||
*--lpd = (v2 << left_shift) | (v1 >> right_shift);
|
||||
}
|
||||
|
||||
n &= 3;
|
||||
|
||||
if (n) {
|
||||
cps += src_offset;
|
||||
do
|
||||
*--cpd = *--cps;
|
||||
while (--n);
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
@@ -0,0 +1,8 @@
|
||||
#include "misc_io.h"
|
||||
#include "abort_exit.h"
|
||||
#include "ansi_files.h"
|
||||
|
||||
/* 803664CC-803664DC 360E0C 0010+00 0/0 2/2 0/0 .text __stdio_atexit */
|
||||
void __stdio_atexit(void) {
|
||||
__stdio_exit = __close_all;
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,34 @@
|
||||
#include "scanf.h"
|
||||
|
||||
/* 8036878C-8036881C 3630CC 0090+00 0/0 2/2 0/0 .text __StringRead */
|
||||
int __StringRead(void* pPtr, int ch, int act) {
|
||||
char ret;
|
||||
__InStrCtrl* Iscp = (__InStrCtrl*)pPtr;
|
||||
|
||||
switch (act) {
|
||||
case __GetAChar:
|
||||
ret = *(Iscp->NextChar);
|
||||
|
||||
if (ret == '\0') {
|
||||
Iscp->NullCharDetected = 1;
|
||||
return -1;
|
||||
} else {
|
||||
Iscp->NextChar++;
|
||||
return (unsigned char)ret;
|
||||
}
|
||||
|
||||
case __UngetAChar:
|
||||
if (Iscp->NullCharDetected == 0) {
|
||||
Iscp->NextChar--;
|
||||
} else {
|
||||
Iscp->NullCharDetected = 0;
|
||||
}
|
||||
|
||||
return ch;
|
||||
|
||||
case __TestForError:
|
||||
return Iscp->NullCharDetected;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
@@ -0,0 +1,38 @@
|
||||
#include "signal.h"
|
||||
#include "critical_regions.h"
|
||||
|
||||
#define __std(ref) ref
|
||||
|
||||
/* 8044D878-8044D890 07A598 0018+00 1/1 0/0 0/0 .bss signal_funcs */
|
||||
__signal_func_ptr signal_funcs[6];
|
||||
|
||||
/* 8036881C-803688DC 36315C 00C0+00 0/0 1/1 0/0 .text raise */
|
||||
int raise(int sig) {
|
||||
__signal_func_ptr signal_func;
|
||||
|
||||
if (sig < 1 || sig > 6) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
__begin_critical_region(stderr_access);
|
||||
signal_func = signal_funcs[sig - 1];
|
||||
|
||||
if (signal_func != ((__std(__signal_func_ptr))1)) {
|
||||
signal_funcs[sig - 1] = ((__std(__signal_func_ptr))0);
|
||||
}
|
||||
|
||||
__end_critical_region(stderr_access);
|
||||
|
||||
if (signal_func == ((__std(__signal_func_ptr))1) ||
|
||||
(signal_func == ((__std(__signal_func_ptr))0) && sig == 1))
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (signal_func == ((__std(__signal_func_ptr))0)) {
|
||||
exit(0);
|
||||
}
|
||||
|
||||
(*signal_func)(sig);
|
||||
return 0;
|
||||
}
|
||||
@@ -0,0 +1,246 @@
|
||||
#include "string.h"
|
||||
|
||||
#define K1 0x80808080
|
||||
#define K2 0xFEFEFEFF
|
||||
|
||||
/* 80368BE4-80368C00 363524 001C+00 0/0 28/28 8/8 .text strlen */
|
||||
size_t strlen(const char* str) {
|
||||
size_t len = -1;
|
||||
unsigned char* p = (unsigned char*)str - 1;
|
||||
|
||||
do {
|
||||
len++;
|
||||
} while (*++p);
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
/* 80368B2C-80368BE4 36346C 00B8+00 0/0 131/131 13/13 .text strcpy */
|
||||
char* strcpy(char* dst, const char* src) {
|
||||
register unsigned char *destb, *fromb;
|
||||
register unsigned long w, t, align;
|
||||
|
||||
fromb = (unsigned char*)src;
|
||||
destb = (unsigned char*)dst;
|
||||
|
||||
if ((align = ((int)fromb & 3)) != ((int)destb & 3)) {
|
||||
goto bytecopy;
|
||||
}
|
||||
|
||||
if (align) {
|
||||
if ((*destb = *fromb) == 0) {
|
||||
return dst;
|
||||
}
|
||||
|
||||
for (align = 3 - align; align; align--) {
|
||||
if ((*(++destb) = *(++fromb)) == 0) {
|
||||
return dst;
|
||||
}
|
||||
}
|
||||
++destb;
|
||||
++fromb;
|
||||
}
|
||||
|
||||
w = *((int*)(fromb));
|
||||
|
||||
t = w + K2;
|
||||
|
||||
t &= K1;
|
||||
if (t) {
|
||||
goto bytecopy;
|
||||
}
|
||||
--((int*)(destb));
|
||||
|
||||
do {
|
||||
*(++((int*)(destb))) = w;
|
||||
w = *(++((int*)(fromb)));
|
||||
|
||||
t = w + K2;
|
||||
t &= K1;
|
||||
if (t) {
|
||||
goto adjust;
|
||||
}
|
||||
} while (1);
|
||||
|
||||
adjust:
|
||||
++((int*)(destb));
|
||||
|
||||
bytecopy:
|
||||
if ((*destb = *fromb) == 0) {
|
||||
return dst;
|
||||
}
|
||||
|
||||
do {
|
||||
if ((*(++destb) = *(++fromb)) == 0) {
|
||||
return dst;
|
||||
}
|
||||
} while (1);
|
||||
|
||||
return dst;
|
||||
}
|
||||
|
||||
/* 80368AE8-80368B2C 363428 0044+00 0/0 9/9 1/1 .text strncpy */
|
||||
char* strncpy(char* dst, const char* src, size_t n) {
|
||||
const unsigned char* p = (const unsigned char*)src - 1;
|
||||
unsigned char* q = (unsigned char*)dst - 1;
|
||||
|
||||
n++;
|
||||
while (--n) {
|
||||
if (!(*++q = *++p)) {
|
||||
while (--n) {
|
||||
*++q = 0;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return dst;
|
||||
}
|
||||
|
||||
/* 80368ABC-80368AE8 3633FC 002C+00 0/0 20/20 8/8 .text strcat */
|
||||
char* strcat(char* dst, const char* src) {
|
||||
const unsigned char* p = (unsigned char*)src - 1;
|
||||
unsigned char* q = (unsigned char*)dst - 1;
|
||||
|
||||
while (*++q) {
|
||||
}
|
||||
|
||||
q--;
|
||||
|
||||
while (*++q = *++p) {
|
||||
}
|
||||
|
||||
return dst;
|
||||
}
|
||||
|
||||
/* 80368994-80368ABC 3632D4 0128+00 0/0 155/155 279/279 .text strcmp */
|
||||
int strcmp(const char* str1, const char* str2) {
|
||||
register unsigned char* left = (unsigned char*)str1;
|
||||
register unsigned char* right = (unsigned char*)str2;
|
||||
unsigned long align, l1, r1, x;
|
||||
|
||||
l1 = *left;
|
||||
r1 = *right;
|
||||
if (l1 - r1) {
|
||||
return l1 - r1;
|
||||
}
|
||||
|
||||
if ((align = ((int)left & 3)) != ((int)right & 3)) {
|
||||
goto bytecopy;
|
||||
}
|
||||
|
||||
if (align) {
|
||||
if (l1 == 0) {
|
||||
return 0;
|
||||
}
|
||||
for (align = 3 - align; align; align--) {
|
||||
l1 = *(++left);
|
||||
r1 = *(++right);
|
||||
if (l1 - r1) {
|
||||
return l1 - r1;
|
||||
}
|
||||
if (l1 == 0) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
left++;
|
||||
right++;
|
||||
}
|
||||
|
||||
l1 = *(int*)left;
|
||||
r1 = *(int*)right;
|
||||
x = l1 + K2;
|
||||
if (x & K1) {
|
||||
goto adjust;
|
||||
}
|
||||
|
||||
while (l1 == r1) {
|
||||
l1 = *(++((int*)(left)));
|
||||
r1 = *(++((int*)(right)));
|
||||
x = l1 + K2;
|
||||
if (x & K1) {
|
||||
goto adjust;
|
||||
}
|
||||
}
|
||||
|
||||
if (l1 > r1) {
|
||||
return 1;
|
||||
}
|
||||
return -1;
|
||||
|
||||
adjust:
|
||||
l1 = *left;
|
||||
r1 = *right;
|
||||
if (l1 - r1) {
|
||||
return l1 - r1;
|
||||
}
|
||||
|
||||
bytecopy:
|
||||
if (l1 == 0) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
do {
|
||||
l1 = *(++left);
|
||||
r1 = *(++right);
|
||||
if (l1 - r1) {
|
||||
return l1 - r1;
|
||||
}
|
||||
if (l1 == 0) {
|
||||
return 0;
|
||||
}
|
||||
} while (1);
|
||||
}
|
||||
|
||||
/* 80368954-80368994 363294 0040+00 0/0 6/6 0/0 .text strncmp */
|
||||
int strncmp(const char* str1, const char* str2, size_t n) {
|
||||
const unsigned char* p1 = (unsigned char*)str1 - 1;
|
||||
const unsigned char* p2 = (unsigned char*)str2 - 1;
|
||||
unsigned long c1, c2;
|
||||
|
||||
n++;
|
||||
while (--n) {
|
||||
if ((c1 = *++p1) != (c2 = *++p2)) {
|
||||
return c1 - c2;
|
||||
} else if (c1 == 0) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* 80368924-80368954 363264 0030+00 0/0 3/3 0/0 .text strchr */
|
||||
char* strchr(const char* str, int c) {
|
||||
const unsigned char* p = (unsigned char*)str - 1;
|
||||
unsigned long chr = (c & 0xFF);
|
||||
|
||||
unsigned long ch;
|
||||
while (ch = *++p) {
|
||||
if (ch == chr) {
|
||||
return (char*)p;
|
||||
}
|
||||
}
|
||||
|
||||
return chr ? NULL : (char*)p;
|
||||
}
|
||||
|
||||
/* 803688DC-80368924 36321C 0048+00 0/0 1/1 0/0 .text strrchr */
|
||||
char* strrchr(const char* str, int c) {
|
||||
const unsigned char* p = (unsigned char*)str - 1;
|
||||
const unsigned char* q = NULL;
|
||||
unsigned long chr = (c & 0xFF);
|
||||
|
||||
unsigned long ch;
|
||||
while (ch = *++p) {
|
||||
if (ch == chr) {
|
||||
q = p;
|
||||
}
|
||||
}
|
||||
|
||||
if (q != NULL) {
|
||||
return (char*)q;
|
||||
}
|
||||
|
||||
return chr ? NULL : (char*)p;
|
||||
}
|
||||
@@ -0,0 +1,203 @@
|
||||
#include "strtoul.h"
|
||||
#include "ctype.h"
|
||||
#include "errno.h"
|
||||
#include "limits.h"
|
||||
#include "scanf.h"
|
||||
|
||||
enum scan_states {
|
||||
start = 0x01,
|
||||
check_for_zero = 0x02,
|
||||
leading_zero = 0x04,
|
||||
need_digit = 0x08,
|
||||
digit_loop = 0x10,
|
||||
finished = 0x20,
|
||||
failure = 0x40
|
||||
};
|
||||
|
||||
#define final_state(scan_state) (scan_state & (finished | failure))
|
||||
#define success(scan_state) (scan_state & (leading_zero | digit_loop | finished))
|
||||
#define fetch() (count++, (*ReadProc)(ReadProcArg, 0, __GetAChar))
|
||||
#define unfetch(c) (*ReadProc)(ReadProcArg, c, __UngetAChar)
|
||||
|
||||
/* 80368D9C-80369114 3636DC 0378+00 3/2 0/0 0/0 .text __strtoul */
|
||||
unsigned long __strtoul(int base, int max_width, int (*ReadProc)(void*, int, int),
|
||||
void* ReadProcArg, int* chars_scanned, int* negative, int* overflow) {
|
||||
int scan_state = start;
|
||||
int count = 0;
|
||||
int spaces = 0;
|
||||
unsigned long value = 0;
|
||||
unsigned long value_max = 0;
|
||||
int c;
|
||||
|
||||
*negative = *overflow = 0;
|
||||
|
||||
if (base < 0 || base == 1 || base > 36 || max_width < 1) {
|
||||
scan_state = failure;
|
||||
} else {
|
||||
c = fetch();
|
||||
}
|
||||
|
||||
if (base != 0) {
|
||||
value_max = ULONG_MAX / base;
|
||||
}
|
||||
|
||||
while (count <= max_width && c != -1 && !final_state(scan_state)) {
|
||||
switch (scan_state) {
|
||||
case start:
|
||||
if (isspace(c)) {
|
||||
c = fetch();
|
||||
count--;
|
||||
spaces++;
|
||||
break;
|
||||
}
|
||||
|
||||
if (c == '+') {
|
||||
c = fetch();
|
||||
} else if (c == '-') {
|
||||
c = fetch();
|
||||
*negative = 1;
|
||||
}
|
||||
|
||||
scan_state = check_for_zero;
|
||||
break;
|
||||
|
||||
case check_for_zero:
|
||||
if (base == 0 || base == 16) {
|
||||
if (c == '0') {
|
||||
scan_state = leading_zero;
|
||||
c = fetch();
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
scan_state = need_digit;
|
||||
break;
|
||||
|
||||
case 4:
|
||||
if (c == 'X' || c == 'x') {
|
||||
base = 16;
|
||||
scan_state = need_digit;
|
||||
c = fetch();
|
||||
break;
|
||||
}
|
||||
|
||||
if (base == 0) {
|
||||
base = 8;
|
||||
}
|
||||
|
||||
scan_state = digit_loop;
|
||||
break;
|
||||
|
||||
case need_digit:
|
||||
case digit_loop:
|
||||
if (base == 0) {
|
||||
base = 10;
|
||||
}
|
||||
|
||||
if (!value_max) {
|
||||
value_max = ULONG_MAX / base;
|
||||
}
|
||||
|
||||
if (isdigit(c)) {
|
||||
if ((c -= '0') >= base) {
|
||||
if (scan_state == digit_loop) {
|
||||
scan_state = finished;
|
||||
} else {
|
||||
scan_state = failure;
|
||||
}
|
||||
|
||||
c += '0';
|
||||
break;
|
||||
}
|
||||
} else if (!isalpha(c) || (toupper(c) - 'A' + 10) >= base) {
|
||||
if (scan_state == digit_loop) {
|
||||
scan_state = finished;
|
||||
} else {
|
||||
scan_state = failure;
|
||||
}
|
||||
|
||||
break;
|
||||
} else {
|
||||
c = toupper(c) - 'A' + 10;
|
||||
}
|
||||
|
||||
if (value > value_max) {
|
||||
*overflow = 1;
|
||||
}
|
||||
|
||||
value *= base;
|
||||
|
||||
if (c > (ULONG_MAX - value)) {
|
||||
*overflow = 1;
|
||||
}
|
||||
|
||||
value += c;
|
||||
scan_state = digit_loop;
|
||||
c = fetch();
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!success(scan_state)) {
|
||||
count = 0;
|
||||
value = 0;
|
||||
*chars_scanned = 0;
|
||||
} else {
|
||||
count--;
|
||||
*chars_scanned = count + spaces;
|
||||
}
|
||||
|
||||
unfetch(c);
|
||||
return value;
|
||||
}
|
||||
|
||||
/* 80368CF0-80368D9C 363630 00AC+00 0/0 2/2 0/0 .text strtoul */
|
||||
unsigned long strtoul(const char* str, char** end, int base) {
|
||||
unsigned long value;
|
||||
int count, negative, overflow;
|
||||
|
||||
__InStrCtrl isc;
|
||||
isc.NextChar = (char*)str;
|
||||
isc.NullCharDetected = 0;
|
||||
|
||||
value = __strtoul(base, 0x7FFFFFFF, &__StringRead, (void*)&isc, &count, &negative, &overflow);
|
||||
|
||||
if (end) {
|
||||
*end = (char*)str + count;
|
||||
}
|
||||
|
||||
if (overflow) {
|
||||
value = ULONG_MAX;
|
||||
errno = 0x22;
|
||||
} else if (negative) {
|
||||
value = -value;
|
||||
}
|
||||
|
||||
return value;
|
||||
}
|
||||
|
||||
/* 80368C00-80368CF0 363540 00F0+00 0/0 3/3 0/0 .text strtol */
|
||||
long strtol(const char* str, char** end, int base) {
|
||||
unsigned long uvalue;
|
||||
long svalue;
|
||||
int count, negative, overflow;
|
||||
|
||||
__InStrCtrl isc;
|
||||
isc.NextChar = (char*)str;
|
||||
isc.NullCharDetected = 0;
|
||||
|
||||
uvalue = __strtoul(base, 0x7FFFFFFF, &__StringRead, (void*)&isc, &count, &negative, &overflow);
|
||||
|
||||
if (end) {
|
||||
*end = (char*)str + count;
|
||||
}
|
||||
|
||||
if (overflow || (!negative && uvalue > LONG_MAX) || (negative && uvalue > -LONG_MIN)) {
|
||||
svalue = (negative ? -LONG_MIN : LONG_MAX);
|
||||
errno = ERANGE;
|
||||
} else {
|
||||
svalue = (negative ? (long)-uvalue : (long)uvalue);
|
||||
}
|
||||
|
||||
return svalue;
|
||||
}
|
||||
@@ -0,0 +1,22 @@
|
||||
#include "wchar_io.h"
|
||||
|
||||
/* 80369114-8036919C 363A54 0088+00 0/0 5/5 0/0 .text fwide */
|
||||
int fwide(FILE* file, int mode) {
|
||||
if (file == NULL || file->file_mode.file_kind == __closed_file) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
switch (file->file_mode.file_orientation) {
|
||||
case UNORIENTED:
|
||||
if (mode > 0) {
|
||||
file->file_mode.file_orientation = WIDE_ORIENTED;
|
||||
} else if (mode < 0) {
|
||||
file->file_mode.file_orientation = CHAR_ORIENTED;
|
||||
}
|
||||
return mode;
|
||||
case WIDE_ORIENTED:
|
||||
return 1;
|
||||
case CHAR_ORIENTED:
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
+104
@@ -0,0 +1,104 @@
|
||||
/* @(#)e_acos.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/* __ieee754_acos(x)
|
||||
* Method :
|
||||
* acos(x) = pi/2 - asin(x)
|
||||
* acos(-x) = pi/2 + asin(x)
|
||||
* For |x|<=0.5
|
||||
* acos(x) = pi/2 - (x + x*x^2*R(x^2)) (see asin.c)
|
||||
* For x>0.5
|
||||
* acos(x) = pi/2 - (pi/2 - 2asin(sqrt((1-x)/2)))
|
||||
* = 2asin(sqrt((1-x)/2))
|
||||
* = 2s + 2s*z*R(z) ...z=(1-x)/2, s=sqrt(z)
|
||||
* = 2f + (2c + 2s*z*R(z))
|
||||
* where f=hi part of s, and c = (z-f*f)/(s+f) is the correction term
|
||||
* for f so that f+c ~ sqrt(z).
|
||||
* For x<-0.5
|
||||
* acos(x) = pi - 2asin(sqrt((1-|x|)/2))
|
||||
* = pi - 0.5*(s+s*z*R(z)), where z=(1-|x|)/2,s=sqrt(z)
|
||||
*
|
||||
* Special cases:
|
||||
* if x is NaN, return x itself;
|
||||
* if |x|>1, return NaN with invalid signal.
|
||||
*
|
||||
* Function needed: sqrt
|
||||
*/
|
||||
|
||||
#include "math.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double
|
||||
#else
|
||||
static double
|
||||
#endif
|
||||
one= 1.00000000000000000000e+00, /* 0x3FF00000, 0x00000000 */
|
||||
pi = 3.14159265358979311600e+00, /* 0x400921FB, 0x54442D18 */
|
||||
pio2_hi = 1.57079632679489655800e+00, /* 0x3FF921FB, 0x54442D18 */
|
||||
pio2_lo = 6.12323399573676603587e-17, /* 0x3C91A626, 0x33145C07 */
|
||||
pS0 = 1.66666666666666657415e-01, /* 0x3FC55555, 0x55555555 */
|
||||
pS1 = -3.25565818622400915405e-01, /* 0xBFD4D612, 0x03EB6F7D */
|
||||
pS2 = 2.01212532134862925881e-01, /* 0x3FC9C155, 0x0E884455 */
|
||||
pS3 = -4.00555345006794114027e-02, /* 0xBFA48228, 0xB5688F3B */
|
||||
pS4 = 7.91534994289814532176e-04, /* 0x3F49EFE0, 0x7501B288 */
|
||||
pS5 = 3.47933107596021167570e-05, /* 0x3F023DE1, 0x0DFDF709 */
|
||||
qS1 = -2.40339491173441421878e+00, /* 0xC0033A27, 0x1C8A2D4B */
|
||||
qS2 = 2.02094576023350569471e+00, /* 0x40002AE5, 0x9C598AC8 */
|
||||
qS3 = -6.88283971605453293030e-01, /* 0xBFE6066C, 0x1B8D0159 */
|
||||
qS4 = 7.70381505559019352791e-02; /* 0x3FB3B8C5, 0xB12E9282 */
|
||||
|
||||
#ifdef __STDC__
|
||||
double __ieee754_acos(double x)
|
||||
#else
|
||||
double __ieee754_acos(x)
|
||||
double x;
|
||||
#endif
|
||||
{
|
||||
double z,p,q,r,w,s,c,df;
|
||||
int hx,ix;
|
||||
hx = __HI(x);
|
||||
ix = hx&0x7fffffff;
|
||||
if(ix>=0x3ff00000) { /* |x| >= 1 */
|
||||
if(((ix-0x3ff00000)|__LO(x))==0) { /* |x|==1 */
|
||||
if(hx>0) return 0.0; /* acos(1) = 0 */
|
||||
else return pi+2.0*pio2_lo; /* acos(-1)= pi */
|
||||
}
|
||||
return NAN; /* acos(|x|>1) is NaN */
|
||||
}
|
||||
if(ix<0x3fe00000) { /* |x| < 0.5 */
|
||||
if(ix<=0x3c600000) return pio2_hi+pio2_lo;/*if|x|<2**-57*/
|
||||
z = x*x;
|
||||
p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5)))));
|
||||
q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4)));
|
||||
r = p/q;
|
||||
return pio2_hi - (x - (pio2_lo-x*r));
|
||||
} else if (hx<0) { /* x < -0.5 */
|
||||
z = (one+x)*0.5;
|
||||
p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5)))));
|
||||
q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4)));
|
||||
s = sqrt(z);
|
||||
r = p/q;
|
||||
w = r*s-pio2_lo;
|
||||
return pi - 2.0*(s+w);
|
||||
} else { /* x > 0.5 */
|
||||
z = (one-x)*0.5;
|
||||
s = sqrt(z);
|
||||
df = s;
|
||||
__LO(df) = 0;
|
||||
c = (z-df*df)/(s+df);
|
||||
p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5)))));
|
||||
q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4)));
|
||||
r = p/q;
|
||||
w = r*s+c;
|
||||
return 2.0*(df+w);
|
||||
}
|
||||
}
|
||||
+115
@@ -0,0 +1,115 @@
|
||||
/* @(#)e_asin.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/* __ieee754_asin(x)
|
||||
* Method :
|
||||
* Since asin(x) = x + x^3/6 + x^5*3/40 + x^7*15/336 + ...
|
||||
* we approximate asin(x) on [0,0.5] by
|
||||
* asin(x) = x + x*x^2*R(x^2)
|
||||
* where
|
||||
* R(x^2) is a rational approximation of (asin(x)-x)/x^3
|
||||
* and its remez error is bounded by
|
||||
* |(asin(x)-x)/x^3 - R(x^2)| < 2^(-58.75)
|
||||
*
|
||||
* For x in [0.5,1]
|
||||
* asin(x) = pi/2-2*asin(sqrt((1-x)/2))
|
||||
* Let y = (1-x), z = y/2, s := sqrt(z), and pio2_hi+pio2_lo=pi/2;
|
||||
* then for x>0.98
|
||||
* asin(x) = pi/2 - 2*(s+s*z*R(z))
|
||||
* = pio2_hi - (2*(s+s*z*R(z)) - pio2_lo)
|
||||
* For x<=0.98, let pio4_hi = pio2_hi/2, then
|
||||
* f = hi part of s;
|
||||
* c = sqrt(z) - f = (z-f*f)/(s+f) ...f+c=sqrt(z)
|
||||
* and
|
||||
* asin(x) = pi/2 - 2*(s+s*z*R(z))
|
||||
* = pio4_hi+(pio4-2s)-(2s*z*R(z)-pio2_lo)
|
||||
* = pio4_hi+(pio4-2f)-(2s*z*R(z)-(pio2_lo+2c))
|
||||
*
|
||||
* Special cases:
|
||||
* if x is NaN, return x itself;
|
||||
* if |x|>1, return NaN with invalid signal.
|
||||
*
|
||||
*/
|
||||
|
||||
#include "math.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double
|
||||
#else
|
||||
static double
|
||||
#endif
|
||||
one
|
||||
= 1.00000000000000000000e+00, /* 0x3FF00000, 0x00000000 */
|
||||
huge = 1.000e+300, pio2_hi = 1.57079632679489655800e+00, /* 0x3FF921FB, 0x54442D18 */
|
||||
pio2_lo = 6.12323399573676603587e-17, /* 0x3C91A626, 0x33145C07 */
|
||||
pio4_hi = 7.85398163397448278999e-01, /* 0x3FE921FB, 0x54442D18 */
|
||||
/* coefficient for R(x^2) */
|
||||
pS0 = 1.66666666666666657415e-01, /* 0x3FC55555, 0x55555555 */
|
||||
pS1 = -3.25565818622400915405e-01, /* 0xBFD4D612, 0x03EB6F7D */
|
||||
pS2 = 2.01212532134862925881e-01, /* 0x3FC9C155, 0x0E884455 */
|
||||
pS3 = -4.00555345006794114027e-02, /* 0xBFA48228, 0xB5688F3B */
|
||||
pS4 = 7.91534994289814532176e-04, /* 0x3F49EFE0, 0x7501B288 */
|
||||
pS5 = 3.47933107596021167570e-05, /* 0x3F023DE1, 0x0DFDF709 */
|
||||
qS1 = -2.40339491173441421878e+00, /* 0xC0033A27, 0x1C8A2D4B */
|
||||
qS2 = 2.02094576023350569471e+00, /* 0x40002AE5, 0x9C598AC8 */
|
||||
qS3 = -6.88283971605453293030e-01, /* 0xBFE6066C, 0x1B8D0159 */
|
||||
qS4 = 7.70381505559019352791e-02; /* 0x3FB3B8C5, 0xB12E9282 */
|
||||
|
||||
#ifdef __STDC__
|
||||
double __ieee754_asin(double x)
|
||||
#else
|
||||
double __ieee754_asin(x) double x;
|
||||
#endif
|
||||
{
|
||||
double t, w, p, q, c, r, s;
|
||||
int hx, ix;
|
||||
hx = __HI(x);
|
||||
ix = hx & 0x7fffffff;
|
||||
if (ix >= 0x3ff00000) { /* |x|>= 1 */
|
||||
if (((ix - 0x3ff00000) | __LO(x)) == 0)
|
||||
/* asin(1)=+-pi/2 with inexact */
|
||||
return x * pio2_hi + x * pio2_lo;
|
||||
return NAN; /* asin(|x|>1) is NaN */
|
||||
} else if (ix < 0x3fe00000) { /* |x|<0.5 */
|
||||
if (ix < 0x3e400000) { /* if |x| < 2**-27 */
|
||||
if (huge + x > one)
|
||||
return x; /* return x with inexact if x!=0*/
|
||||
} else
|
||||
t = x * x;
|
||||
p = t * (pS0 + t * (pS1 + t * (pS2 + t * (pS3 + t * (pS4 + t * pS5)))));
|
||||
q = one + t * (qS1 + t * (qS2 + t * (qS3 + t * qS4)));
|
||||
w = p / q;
|
||||
return x + x * w;
|
||||
}
|
||||
/* 1> |x|>= 0.5 */
|
||||
w = one - fabs(x);
|
||||
t = w * 0.5;
|
||||
p = t * (pS0 + t * (pS1 + t * (pS2 + t * (pS3 + t * (pS4 + t * pS5)))));
|
||||
q = one + t * (qS1 + t * (qS2 + t * (qS3 + t * qS4)));
|
||||
s = sqrt(t);
|
||||
if (ix >= 0x3FEF3333) { /* if |x| > 0.975 */
|
||||
w = p / q;
|
||||
t = pio2_hi - (2.0 * (s + s * w) - pio2_lo);
|
||||
} else {
|
||||
w = s;
|
||||
__LO(w) = 0;
|
||||
c = (t - w * w) / (s + w);
|
||||
r = p / q;
|
||||
p = 2.0 * s * r - (pio2_lo - 2.0 * c);
|
||||
q = pio4_hi - 2.0 * w;
|
||||
t = pio4_hi - (p - q);
|
||||
}
|
||||
if (hx > 0)
|
||||
return t;
|
||||
else
|
||||
return -t;
|
||||
}
|
||||
+142
@@ -0,0 +1,142 @@
|
||||
/* @(#)e_atan2.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*
|
||||
*/
|
||||
|
||||
/* __ieee754_atan2(y,x)
|
||||
* Method :
|
||||
* 1. Reduce y to positive by atan2(y,x)=-atan2(-y,x).
|
||||
* 2. Reduce x to positive by (if x and y are unexceptional):
|
||||
* ARG (x+iy) = arctan(y/x) ... if x > 0,
|
||||
* ARG (x+iy) = pi - arctan[y/(-x)] ... if x < 0,
|
||||
*
|
||||
* Special cases:
|
||||
*
|
||||
* ATAN2((anything), NaN ) is NaN;
|
||||
* ATAN2(NAN , (anything) ) is NaN;
|
||||
* ATAN2(+-0, +(anything but NaN)) is +-0 ;
|
||||
* ATAN2(+-0, -(anything but NaN)) is +-pi ;
|
||||
* ATAN2(+-(anything but 0 and NaN), 0) is +-pi/2;
|
||||
* ATAN2(+-(anything but INF and NaN), +INF) is +-0 ;
|
||||
* ATAN2(+-(anything but INF and NaN), -INF) is +-pi;
|
||||
* ATAN2(+-INF,+INF ) is +-pi/4 ;
|
||||
* ATAN2(+-INF,-INF ) is +-3pi/4;
|
||||
* ATAN2(+-INF, (anything but,0,NaN, and INF)) is +-pi/2;
|
||||
*
|
||||
* Constants:
|
||||
* The hexadecimal values are the intended ones for the following
|
||||
* constants. The decimal values may be used, provided that the
|
||||
* compiler will convert from decimal to binary accurately enough
|
||||
* to produce the hexadecimal values shown.
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double
|
||||
#else
|
||||
static double
|
||||
#endif
|
||||
tiny
|
||||
= 1.0e-300,
|
||||
zero = 0.0, pi_o_4 = 7.8539816339744827900E-01, /* 0x3FE921FB, 0x54442D18 */
|
||||
pi_o_2 = 1.5707963267948965580E+00, /* 0x3FF921FB, 0x54442D18 */
|
||||
pi = 3.1415926535897931160E+00, /* 0x400921FB, 0x54442D18 */
|
||||
pi_lo = 1.2246467991473531772E-16; /* 0x3CA1A626, 0x33145C07 */
|
||||
|
||||
#ifdef __STDC__
|
||||
double __ieee754_atan2(double y, double x)
|
||||
#else
|
||||
double __ieee754_atan2(y, x) double y, x;
|
||||
#endif
|
||||
{
|
||||
double z;
|
||||
int k, m, hx, hy, ix, iy;
|
||||
unsigned lx, ly;
|
||||
|
||||
hx = __HI(x);
|
||||
ix = hx & 0x7fffffff;
|
||||
lx = __LO(x);
|
||||
hy = __HI(y);
|
||||
iy = hy & 0x7fffffff;
|
||||
ly = __LO(y);
|
||||
if (((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000)) /* x or y is NaN */
|
||||
return x + y;
|
||||
if ((hx - 0x3ff00000 | lx) == 0)
|
||||
return atan(y); /* x=1.0 */
|
||||
m = ((hy >> 31) & 1) | ((hx >> 30) & 2); /* 2*sign(x)+sign(y) */
|
||||
|
||||
/* when y = 0 */
|
||||
if ((iy | ly) == 0) {
|
||||
switch (m) {
|
||||
case 0:
|
||||
case 1:
|
||||
return y; /* atan(+-0,+anything)=+-0 */
|
||||
case 2:
|
||||
return pi + tiny; /* atan(+0,-anything) = pi */
|
||||
case 3:
|
||||
return -pi - tiny; /* atan(-0,-anything) =-pi */
|
||||
}
|
||||
}
|
||||
/* when x = 0 */
|
||||
if ((ix | lx) == 0)
|
||||
return (hy < 0) ? -pi_o_2 - tiny : pi_o_2 + tiny;
|
||||
|
||||
/* when x is INF */
|
||||
if (ix == 0x7ff00000) {
|
||||
if (iy == 0x7ff00000) {
|
||||
switch (m) {
|
||||
case 0:
|
||||
return pi_o_4 + tiny; /* atan(+INF,+INF) */
|
||||
case 1:
|
||||
return -pi_o_4 - tiny; /* atan(-INF,+INF) */
|
||||
case 2:
|
||||
return 3.0 * pi_o_4 + tiny; /*atan(+INF,-INF)*/
|
||||
case 3:
|
||||
return -3.0 * pi_o_4 - tiny; /*atan(-INF,-INF)*/
|
||||
}
|
||||
} else {
|
||||
switch (m) {
|
||||
case 0:
|
||||
return zero; /* atan(+...,+INF) */
|
||||
case 1:
|
||||
return -zero; /* atan(-...,+INF) */
|
||||
case 2:
|
||||
return pi + tiny; /* atan(+...,-INF) */
|
||||
case 3:
|
||||
return -pi - tiny; /* atan(-...,-INF) */
|
||||
}
|
||||
}
|
||||
}
|
||||
/* when y is INF */
|
||||
if (iy == 0x7ff00000)
|
||||
return (hy < 0) ? -pi_o_2 - tiny : pi_o_2 + tiny;
|
||||
|
||||
/* compute y/x */
|
||||
k = (iy - ix) >> 20;
|
||||
if (k > 60)
|
||||
z = pi_o_2 + 0.5 * pi_lo; /* |y/x| > 2**60 */
|
||||
else if (hx < 0 && k < -60)
|
||||
z = 0.0; /* |y|/x < -2**60 */
|
||||
else
|
||||
z = atan(__fabs(y / x)); /* safe to do y/x */
|
||||
switch (m) {
|
||||
case 0:
|
||||
return z; /* atan(+,+) */
|
||||
case 1:
|
||||
__HI(z) ^= 0x80000000;
|
||||
return z; /* atan(-,+) */
|
||||
case 2:
|
||||
return pi - (z - pi_lo); /* atan(+,-) */
|
||||
default: /* case 3 */
|
||||
return (z - pi_lo) - pi; /* atan(-,-) */
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,161 @@
|
||||
/* @(#)e_exp.c 1.6 04/04/22 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 2004 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/* __ieee754_exp(x)
|
||||
* Returns the exponential of x.
|
||||
*
|
||||
* Method
|
||||
* 1. Argument reduction:
|
||||
* Reduce x to an r so that |r| <= 0.5*ln2 ~ 0.34658.
|
||||
* Given x, find r and integer k such that
|
||||
*
|
||||
* x = k*ln2 + r, |r| <= 0.5*ln2.
|
||||
*
|
||||
* Here r will be represented as r = hi-lo for better
|
||||
* accuracy.
|
||||
*
|
||||
* 2. Approximation of exp(r) by a special rational function on
|
||||
* the interval [0,0.34658]:
|
||||
* Write
|
||||
* R(r**2) = r*(exp(r)+1)/(exp(r)-1) = 2 + r*r/6 - r**4/360 + ...
|
||||
* We use a special Remes algorithm on [0,0.34658] to generate
|
||||
* a polynomial of degree 5 to approximate R. The maximum error
|
||||
* of this polynomial approximation is bounded by 2**-59. In
|
||||
* other words,
|
||||
* R(z) ~ 2.0 + P1*z + P2*z**2 + P3*z**3 + P4*z**4 + P5*z**5
|
||||
* (where z=r*r, and the values of P1 to P5 are listed below)
|
||||
* and
|
||||
* | 5 | -59
|
||||
* | 2.0+P1*z+...+P5*z - R(z) | <= 2
|
||||
* | |
|
||||
* The computation of exp(r) thus becomes
|
||||
* 2*r
|
||||
* exp(r) = 1 + -------
|
||||
* R - r
|
||||
* r*R1(r)
|
||||
* = 1 + r + ----------- (for better accuracy)
|
||||
* 2 - R1(r)
|
||||
* where
|
||||
* 2 4 10
|
||||
* R1(r) = r - (P1*r + P2*r + ... + P5*r ).
|
||||
*
|
||||
* 3. Scale back to obtain exp(x):
|
||||
* From step 1, we have
|
||||
* exp(x) = 2^k * exp(r)
|
||||
*
|
||||
* Special cases:
|
||||
* exp(INF) is INF, exp(NaN) is NaN;
|
||||
* exp(-INF) is 0, and
|
||||
* for finite argument, only exp(0)=1 is exact.
|
||||
*
|
||||
* Accuracy:
|
||||
* according to an error analysis, the error is always less than
|
||||
* 1 ulp (unit in the last place).
|
||||
*
|
||||
* Misc. info.
|
||||
* For IEEE double
|
||||
* if x > 7.09782712893383973096e+02 then exp(x) overflow
|
||||
* if x < -7.45133219101941108420e+02 then exp(x) underflow
|
||||
*
|
||||
* Constants:
|
||||
* The hexadecimal values are the intended ones for the following
|
||||
* constants. The decimal values may be used, provided that the
|
||||
* compiler will convert from decimal to binary accurately enough
|
||||
* to produce the hexadecimal values shown.
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double
|
||||
#else
|
||||
static double
|
||||
#endif
|
||||
one = 1.0,
|
||||
halF[2] = {0.5,-0.5,},
|
||||
huge = 1.0e+300,
|
||||
twom1000= 9.33263618503218878990e-302, /* 2**-1000=0x01700000,0*/
|
||||
o_threshold= 7.09782712893383973096e+02, /* 0x40862E42, 0xFEFA39EF */
|
||||
u_threshold= -7.45133219101941108420e+02, /* 0xc0874910, 0xD52D3051 */
|
||||
ln2HI[2] ={ 6.93147180369123816490e-01, /* 0x3fe62e42, 0xfee00000 */
|
||||
-6.93147180369123816490e-01,},/* 0xbfe62e42, 0xfee00000 */
|
||||
ln2LO[2] ={ 1.90821492927058770002e-10, /* 0x3dea39ef, 0x35793c76 */
|
||||
-1.90821492927058770002e-10,},/* 0xbdea39ef, 0x35793c76 */
|
||||
invln2 = 1.44269504088896338700e+00, /* 0x3ff71547, 0x652b82fe */
|
||||
P1 = 1.66666666666666019037e-01, /* 0x3FC55555, 0x5555553E */
|
||||
P2 = -2.77777777770155933842e-03, /* 0xBF66C16C, 0x16BEBD93 */
|
||||
P3 = 6.61375632143793436117e-05, /* 0x3F11566A, 0xAF25DE2C */
|
||||
P4 = -1.65339022054652515390e-06, /* 0xBEBBBD41, 0xC5D26BF1 */
|
||||
P5 = 4.13813679705723846039e-08; /* 0x3E663769, 0x72BEA4D0 */
|
||||
|
||||
#ifdef __STDC__
|
||||
double __ieee754_exp(double x) /* default IEEE double exp */
|
||||
#else
|
||||
double __ieee754_exp(x) /* default IEEE double exp */
|
||||
double x;
|
||||
#endif
|
||||
{
|
||||
double y, hi, lo, c, t;
|
||||
int k, xsb;
|
||||
unsigned hx;
|
||||
|
||||
hx = __HI(x); /* high word of x */
|
||||
xsb = (hx >> 31) & 1; /* sign bit of x */
|
||||
hx &= 0x7fffffff; /* high word of |x| */
|
||||
|
||||
/* filter out non-finite argument */
|
||||
if (hx >= 0x40862E42) { /* if |x|>=709.78... */
|
||||
if (hx >= 0x7ff00000) {
|
||||
if (((hx & 0xfffff) | __LO(x)) != 0)
|
||||
return x + x; /* NaN */
|
||||
else
|
||||
return (xsb == 0) ? x : 0.0; /* exp(+-inf)={inf,0} */
|
||||
}
|
||||
if (x > o_threshold)
|
||||
return huge * huge; /* overflow */
|
||||
if (x < u_threshold)
|
||||
return twom1000 * twom1000; /* underflow */
|
||||
}
|
||||
|
||||
/* argument reduction */
|
||||
if (hx > 0x3fd62e42) { /* if |x| > 0.5 ln2 */
|
||||
if (hx < 0x3FF0A2B2) { /* and |x| < 1.5 ln2 */
|
||||
hi = x - ln2HI[xsb];
|
||||
lo = ln2LO[xsb];
|
||||
k = 1 - xsb - xsb;
|
||||
} else {
|
||||
k = (int)(invln2 * x + halF[xsb]);
|
||||
t = k;
|
||||
hi = x - t * ln2HI[0]; /* t*ln2HI is exact here */
|
||||
lo = t * ln2LO[0];
|
||||
}
|
||||
x = hi - lo;
|
||||
} else if (hx < 0x3e300000) { /* when |x|<2**-28 */
|
||||
if (huge + x > one)
|
||||
return one + x; /* trigger inexact */
|
||||
} else
|
||||
k = 0;
|
||||
|
||||
/* x is now in primary range */
|
||||
t = x * x;
|
||||
c = x - t * (P1 + t * (P2 + t * (P3 + t * (P4 + t * P5))));
|
||||
if (k == 0)
|
||||
return one - ((x * c) / (c - 2.0) - x);
|
||||
else
|
||||
y = one - ((lo - (x * c) / (2.0 - c)) - hi);
|
||||
if (k >= -1021) {
|
||||
__HI(y) += (k << 20); /* add k to y's exponent */
|
||||
return y;
|
||||
} else {
|
||||
__HI(y) += ((k + 1000) << 20); /* add k to y's exponent */
|
||||
return y * twom1000;
|
||||
}
|
||||
}
|
||||
+166
@@ -0,0 +1,166 @@
|
||||
/* @(#)e_fmod.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
* __ieee754_fmod(x,y)
|
||||
* Return x mod y in exact arithmetic
|
||||
* Method: shift and subtract
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double one = 1.0, Zero[] = {
|
||||
0.0,
|
||||
-0.0,
|
||||
};
|
||||
#else
|
||||
static double one = 1.0, Zero[] = {
|
||||
0.0,
|
||||
-0.0,
|
||||
};
|
||||
#endif
|
||||
|
||||
#ifdef __STDC__
|
||||
double __ieee754_fmod(double x, double y)
|
||||
#else
|
||||
double __ieee754_fmod(x, y) double x, y;
|
||||
#endif
|
||||
{
|
||||
int n, hx, hy, hz, ix, iy, sx, i;
|
||||
unsigned lx, ly, lz;
|
||||
|
||||
hx = __HI(x); /* high word of x */
|
||||
lx = __LO(x); /* low word of x */
|
||||
hy = __HI(y); /* high word of y */
|
||||
ly = __LO(y); /* low word of y */
|
||||
sx = hx & 0x80000000; /* sign of x */
|
||||
hx ^= sx; /* |x| */
|
||||
hy &= 0x7fffffff; /* |y| */
|
||||
|
||||
/* purge off exception values */
|
||||
if ((hy | ly) == 0 || (hx >= 0x7ff00000) || /* y=0,or x not finite */
|
||||
((hy | ((ly | -ly) >> 31)) > 0x7ff00000)) /* or y is NaN */
|
||||
return (x * y) / (x * y);
|
||||
if (hx <= hy) {
|
||||
if ((hx < hy) || (lx < ly))
|
||||
return x; /* |x|<|y| return x */
|
||||
if (lx == ly)
|
||||
return Zero[(unsigned)sx >> 31]; /* |x|=|y| return x*0*/
|
||||
}
|
||||
|
||||
/* determine ix = ilogb(x) */
|
||||
if (hx < 0x00100000) { /* subnormal x */
|
||||
if (hx == 0) {
|
||||
for (ix = -1043, i = lx; i > 0; i <<= 1)
|
||||
ix -= 1;
|
||||
} else {
|
||||
for (ix = -1022, i = (hx << 11); i > 0; i <<= 1)
|
||||
ix -= 1;
|
||||
}
|
||||
} else
|
||||
ix = (hx >> 20) - 1023;
|
||||
|
||||
/* determine iy = ilogb(y) */
|
||||
if (hy < 0x00100000) { /* subnormal y */
|
||||
if (hy == 0) {
|
||||
for (iy = -1043, i = ly; i > 0; i <<= 1)
|
||||
iy -= 1;
|
||||
} else {
|
||||
for (iy = -1022, i = (hy << 11); i > 0; i <<= 1)
|
||||
iy -= 1;
|
||||
}
|
||||
} else
|
||||
iy = (hy >> 20) - 1023;
|
||||
|
||||
/* set up {hx,lx}, {hy,ly} and align y to x */
|
||||
if (ix >= -1022)
|
||||
hx = 0x00100000 | (0x000fffff & hx);
|
||||
else { /* subnormal x, shift x to normal */
|
||||
n = -1022 - ix;
|
||||
if (n <= 31) {
|
||||
hx = (hx << n) | (lx >> (32 - n));
|
||||
lx <<= n;
|
||||
} else {
|
||||
hx = lx << (n - 32);
|
||||
lx = 0;
|
||||
}
|
||||
}
|
||||
if (iy >= -1022)
|
||||
hy = 0x00100000 | (0x000fffff & hy);
|
||||
else { /* subnormal y, shift y to normal */
|
||||
n = -1022 - iy;
|
||||
if (n <= 31) {
|
||||
hy = (hy << n) | (ly >> (32 - n));
|
||||
ly <<= n;
|
||||
} else {
|
||||
hy = ly << (n - 32);
|
||||
ly = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* fix point fmod */
|
||||
n = ix - iy;
|
||||
while (n--) {
|
||||
hz = hx - hy;
|
||||
lz = lx - ly;
|
||||
if (lx < ly)
|
||||
hz -= 1;
|
||||
if (hz < 0) {
|
||||
hx = hx + hx + (lx >> 31);
|
||||
lx = lx + lx;
|
||||
} else {
|
||||
if ((hz | lz) == 0) /* return sign(x)*0 */
|
||||
return Zero[(unsigned)sx >> 31];
|
||||
hx = hz + hz + (lz >> 31);
|
||||
lx = lz + lz;
|
||||
}
|
||||
}
|
||||
hz = hx - hy;
|
||||
lz = lx - ly;
|
||||
if (lx < ly)
|
||||
hz -= 1;
|
||||
if (hz >= 0) {
|
||||
hx = hz;
|
||||
lx = lz;
|
||||
}
|
||||
|
||||
/* convert back to floating value and restore the sign */
|
||||
if ((hx | lx) == 0) /* return sign(x)*0 */
|
||||
return Zero[(unsigned)sx >> 31];
|
||||
while (hx < 0x00100000) { /* normalize x */
|
||||
hx = hx + hx + (lx >> 31);
|
||||
lx = lx + lx;
|
||||
iy -= 1;
|
||||
}
|
||||
if (iy >= -1022) { /* normalize output */
|
||||
hx = ((hx - 0x00100000) | ((iy + 1023) << 20));
|
||||
__HI(x) = hx | sx;
|
||||
__LO(x) = lx;
|
||||
} else { /* subnormal output */
|
||||
n = -1022 - iy;
|
||||
if (n <= 20) {
|
||||
lx = (lx >> n) | ((unsigned)hx << (32 - n));
|
||||
hx >>= n;
|
||||
} else if (n <= 31) {
|
||||
lx = (hx << (32 - n)) | (lx >> n);
|
||||
hx = sx;
|
||||
} else {
|
||||
lx = hx >> (n - 32);
|
||||
hx = sx;
|
||||
}
|
||||
__HI(x) = hx | sx;
|
||||
__LO(x) = lx;
|
||||
x *= one; /* create necessary signal */
|
||||
}
|
||||
return x; /* exact output */
|
||||
}
|
||||
@@ -0,0 +1,407 @@
|
||||
//========================================================================
|
||||
//
|
||||
// e_pow.c
|
||||
//
|
||||
// Part of the standard mathematical function library
|
||||
//
|
||||
//========================================================================
|
||||
//####ECOSGPLCOPYRIGHTBEGIN####
|
||||
// -------------------------------------------
|
||||
// This file is part of eCos, the Embedded Configurable Operating System.
|
||||
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
|
||||
//
|
||||
// eCos is free software; you can redistribute it and/or modify it under
|
||||
// the terms of the GNU General Public License as published by the Free
|
||||
// Software Foundation; either version 2 or (at your option) any later version.
|
||||
//
|
||||
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
|
||||
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
// for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License along
|
||||
// with eCos; if not, write to the Free Software Foundation, Inc.,
|
||||
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
||||
//
|
||||
// As a special exception, if other files instantiate templates or use macros
|
||||
// or inline functions from this file, or you compile this file and link it
|
||||
// with other works to produce a work based on this file, this file does not
|
||||
// by itself cause the resulting work to be covered by the GNU General Public
|
||||
// License. However the source code for this file must still be made available
|
||||
// in accordance with section (3) of the GNU General Public License.
|
||||
//
|
||||
// This exception does not invalidate any other reasons why a work based on
|
||||
// this file might be covered by the GNU General Public License.
|
||||
//
|
||||
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
|
||||
// at http://sources.redhat.com/ecos/ecos-license/
|
||||
// -------------------------------------------
|
||||
//####ECOSGPLCOPYRIGHTEND####
|
||||
//========================================================================
|
||||
//#####DESCRIPTIONBEGIN####
|
||||
//
|
||||
// Author(s): jlarmour
|
||||
// Contributors:
|
||||
// Date: 2001-07-20
|
||||
// Purpose:
|
||||
// Description:
|
||||
// Usage:
|
||||
//
|
||||
//####DESCRIPTIONEND####
|
||||
//
|
||||
//========================================================================
|
||||
|
||||
// CONFIGURATION
|
||||
|
||||
/* @(#)e_pow.c 5.1 93/09/24 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/* __ieee754_pow(x,y) return x**y
|
||||
*
|
||||
* n
|
||||
* Method: Let x = 2 * (1+f)
|
||||
* 1. Compute and return log2(x) in two pieces:
|
||||
* log2(x) = w1 + w2,
|
||||
* where w1 has 53-24 = 29 bit trailing zeros.
|
||||
* 2. Perform y*log2(x) = n+y' by simulating muti-precision
|
||||
* arithmetic, where |y'|<=0.5.
|
||||
* 3. Return x**y = 2**n*exp(y'*log2)
|
||||
*
|
||||
* Special cases:
|
||||
* 1. (anything) ** 0 is 1
|
||||
* 2. (anything) ** 1 is itself
|
||||
* 3. (anything) ** NAN is NAN
|
||||
* 4. NAN ** (anything except 0) is NAN
|
||||
* 5. +-(|x| > 1) ** +INF is +INF
|
||||
* 6. +-(|x| > 1) ** -INF is +0
|
||||
* 7. +-(|x| < 1) ** +INF is +0
|
||||
* 8. +-(|x| < 1) ** -INF is +INF
|
||||
* 9. +-1 ** +-INF is NAN
|
||||
* 10. +0 ** (+anything except 0, NAN) is +0
|
||||
* 11. -0 ** (+anything except 0, NAN, odd integer) is +0
|
||||
* 12. +0 ** (-anything except 0, NAN) is +INF
|
||||
* 13. -0 ** (-anything except 0, NAN, odd integer) is +INF
|
||||
* 14. -0 ** (odd integer) = -( +0 ** (odd integer) )
|
||||
* 15. +INF ** (+anything except 0,NAN) is +INF
|
||||
* 16. +INF ** (-anything except 0,NAN) is +0
|
||||
* 17. -INF ** (anything) = -0 ** (-anything)
|
||||
* 18. (-anything) ** (integer) is (-1)**(integer)*(+anything**integer)
|
||||
* 19. (-anything except 0 and inf) ** (non-integer) is NAN
|
||||
*
|
||||
* Accuracy:
|
||||
* pow(x,y) returns x**y nearly rounded. In particular
|
||||
* pow(integer,integer)
|
||||
* always returns the correct integer provided it is
|
||||
* representable.
|
||||
*
|
||||
* Constants :
|
||||
* The hexadecimal values are the intended ones for the following
|
||||
* constants. The decimal values may be used, provided that the
|
||||
* compiler will convert from decimal to binary accurately enough
|
||||
* to produce the hexadecimal values shown.
|
||||
*/
|
||||
|
||||
#include "types.h"
|
||||
#include "errno.h"
|
||||
#include "math.h"
|
||||
|
||||
#ifndef _DOUBLE_IS_32BITS
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double
|
||||
#else
|
||||
static double
|
||||
#endif
|
||||
bp[] = {1.0, 1.5,},
|
||||
dp_h[] = { 0.0, 5.84962487220764160156e-01,}, /* 0x3FE2B803, 0x40000000 */
|
||||
dp_l[] = { 0.0, 1.35003920212974897128e-08,}, /* 0x3E4CFDEB, 0x43CFD006 */
|
||||
zero = 0.0,
|
||||
one = 1.0,
|
||||
two = 2.0,
|
||||
two53 = 9007199254740992.0, /* 0x43400000, 0x00000000 */
|
||||
huge = 1.0e300,
|
||||
tiny = 1.0e-300,
|
||||
/* poly coefs for (3/2)*(log(x)-2s-2/3*s**3 */
|
||||
L1 = 5.99999999999994648725e-01, /* 0x3FE33333, 0x33333303 */
|
||||
L2 = 4.28571428578550184252e-01, /* 0x3FDB6DB6, 0xDB6FABFF */
|
||||
L3 = 3.33333329818377432918e-01, /* 0x3FD55555, 0x518F264D */
|
||||
L4 = 2.72728123808534006489e-01, /* 0x3FD17460, 0xA91D4101 */
|
||||
L5 = 2.30660745775561754067e-01, /* 0x3FCD864A, 0x93C9DB65 */
|
||||
L6 = 2.06975017800338417784e-01, /* 0x3FCA7E28, 0x4A454EEF */
|
||||
P1 = 1.66666666666666019037e-01, /* 0x3FC55555, 0x5555553E */
|
||||
P2 = -2.77777777770155933842e-03, /* 0xBF66C16C, 0x16BEBD93 */
|
||||
P3 = 6.61375632143793436117e-05, /* 0x3F11566A, 0xAF25DE2C */
|
||||
P4 = -1.65339022054652515390e-06, /* 0xBEBBBD41, 0xC5D26BF1 */
|
||||
P5 = 4.13813679705723846039e-08, /* 0x3E663769, 0x72BEA4D0 */
|
||||
lg2 = 6.93147180559945286227e-01, /* 0x3FE62E42, 0xFEFA39EF */
|
||||
lg2_h = 6.93147182464599609375e-01, /* 0x3FE62E43, 0x00000000 */
|
||||
lg2_l = -1.90465429995776804525e-09, /* 0xBE205C61, 0x0CA86C39 */
|
||||
ovt = 8.0085662595372944372e-0017, /* -(1024-log2(ovfl+.5ulp)) */
|
||||
cp = 9.61796693925975554329e-01, /* 0x3FEEC709, 0xDC3A03FD =2/(3ln2) */
|
||||
cp_h = 9.61796700954437255859e-01, /* 0x3FEEC709, 0xE0000000 =(float)cp */
|
||||
cp_l = -7.02846165095275826516e-09, /* 0xBE3E2FE0, 0x145B01F5 =tail of cp_h*/
|
||||
ivln2 = 1.44269504088896338700e+00, /* 0x3FF71547, 0x652B82FE =1/ln2 */
|
||||
ivln2_h = 1.44269502162933349609e+00, /* 0x3FF71547, 0x60000000 =24b 1/ln2*/
|
||||
ivln2_l = 1.92596299112661746887e-08; /* 0x3E54AE0B, 0xF85DDF44 =1/ln2 tail*/
|
||||
|
||||
#ifdef __STDC__
|
||||
double __ieee754_pow(double x, double y)
|
||||
#else
|
||||
double __ieee754_pow(x, y) double x, y;
|
||||
#endif
|
||||
{
|
||||
double z, ax, z_h, z_l, p_h, p_l;
|
||||
double y1, t1, t2, r, s, t, u, v, w;
|
||||
double qqq; // necessary temp
|
||||
int i0, i1, i, j, k, yisint, n;
|
||||
int hx, hy, ix, iy;
|
||||
u32 lx, ly;
|
||||
|
||||
i0 = ((*(int*)&one) >> 29) ^ 1;
|
||||
i1 = 1 - i0;
|
||||
hx = __HI(x);
|
||||
lx = __LO(x);
|
||||
hy = __HI(y);
|
||||
ly = __LO(y);
|
||||
ix = hx & 0x7fffffff;
|
||||
iy = hy & 0x7fffffff;
|
||||
|
||||
/* y==zero: x**0 = 1 */
|
||||
if ((iy | ly) == 0)
|
||||
return one;
|
||||
|
||||
/* +-NaN return x+y */
|
||||
if (ix > 0x7ff00000 || ((ix == 0x7ff00000) && (lx != 0)) || iy > 0x7ff00000 || ((iy == 0x7ff00000) && (ly != 0)))
|
||||
return x + y;
|
||||
|
||||
/* determine if y is an odd int when x < 0
|
||||
* yisint = 0 ... y is not an integer
|
||||
* yisint = 1 ... y is an odd int
|
||||
* yisint = 2 ... y is an even int
|
||||
*/
|
||||
yisint = 0;
|
||||
if (hx < 0) {
|
||||
if (iy >= 0x43400000)
|
||||
yisint = 2; /* even integer y */
|
||||
else if (iy >= 0x3ff00000) {
|
||||
k = (iy >> 20) - 0x3ff; /* exponent */
|
||||
if (k > 20) {
|
||||
j = ly >> (52 - k);
|
||||
if ((j << (52 - k)) == ly)
|
||||
yisint = 2 - (j & 1);
|
||||
} else if (ly == 0) {
|
||||
j = iy >> (20 - k);
|
||||
if ((j << (20 - k)) == iy)
|
||||
yisint = 2 - (j & 1);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* special value of y */
|
||||
if (ly == 0) {
|
||||
if (iy == 0x7ff00000) { /* y is +-inf */
|
||||
if (((ix - 0x3ff00000) | lx) == 0)
|
||||
return y - y; /* inf**+-1 is NaN */
|
||||
else if (ix >= 0x3ff00000) /* (|x|>1)**+-inf = inf,0 */
|
||||
return (hy >= 0) ? y : zero;
|
||||
else /* (|x|<1)**-,+inf = inf,0 */
|
||||
return (hy < 0) ? -y : zero;
|
||||
}
|
||||
if (iy == 0x3ff00000) { /* y is +-1 */
|
||||
if (hy < 0)
|
||||
return one / x;
|
||||
else
|
||||
return x;
|
||||
}
|
||||
if (hy == 0x40000000)
|
||||
return x * x; /* y is 2 */
|
||||
if (hy == 0x3fe00000) { /* y is 0.5 */
|
||||
if (hx >= 0) /* x >= +0 */
|
||||
return sqrt(x);
|
||||
}
|
||||
}
|
||||
|
||||
ax = __fabs(x);
|
||||
qqq = ax; /*x is +-0,+-inf,+-1*/
|
||||
/* special value of x */
|
||||
if (lx == 0) {
|
||||
if (ix == 0x7ff00000 || ix == 0 || ix == 0x3ff00000) {
|
||||
z = qqq; /*x is +-0,+-inf,+-1*/
|
||||
if (hy < 0)
|
||||
z = one / z; /* z = (1/|x|) */
|
||||
if (hx < 0) {
|
||||
if (((ix - 0x3ff00000) | yisint) == 0) {
|
||||
z = (z - z) / (z - z); /* (-1)**non-int is NaN */
|
||||
} else if (yisint == 1)
|
||||
z = -z; /* (x<0)**odd = -(|x|**odd) */
|
||||
}
|
||||
return z;
|
||||
}
|
||||
}
|
||||
|
||||
/* (x<0)**(non-int) is NaN */
|
||||
/* CYGNUS LOCAL: This used to be
|
||||
if((((hx>>31)+1)|yisint)==0) return (x-x)/(x-x);
|
||||
but ANSI C says a right shift of a signed negative quantity is
|
||||
implementation defined. */
|
||||
|
||||
if (((((int)hx >> 31) + 1) | yisint) == 0) {
|
||||
errno = 33;
|
||||
return (double)NAN;
|
||||
};
|
||||
|
||||
/* |y| is huge */
|
||||
if (iy > 0x41e00000) { /* if |y| > 2**31 */
|
||||
if (iy > 0x43f00000) { /* if |y| > 2**64, must o/uflow */
|
||||
if (ix <= 0x3fefffff)
|
||||
return (hy < 0) ? huge * huge : tiny * tiny;
|
||||
if (ix >= 0x3ff00000)
|
||||
return (hy > 0) ? huge * huge : tiny * tiny;
|
||||
}
|
||||
/* over/underflow if x is not close to one */
|
||||
if (ix < 0x3fefffff)
|
||||
return (hy < 0) ? huge * huge : tiny * tiny;
|
||||
if (ix > 0x3ff00000)
|
||||
return (hy > 0) ? huge * huge : tiny * tiny;
|
||||
/* now |1-x| is tiny <= 2**-20, suffice to compute
|
||||
log(x) by x-x^2/2+x^3/3-x^4/4 */
|
||||
t = x - 1; /* t has 20 trailing zeros */
|
||||
w = (t * t) * (0.5 - t * (0.3333333333333333333333 - t * 0.25));
|
||||
u = ivln2_h * t; /* ivln2_h has 21 sig. bits */
|
||||
v = t * ivln2_l - w * ivln2;
|
||||
t1 = u + v;
|
||||
__LO(t1) = 0;
|
||||
t2 = v - (t1 - u);
|
||||
} else {
|
||||
double s2, s_h, s_l, t_h, t_l;
|
||||
n = 0;
|
||||
/* take care subnormal number */
|
||||
if (ix < 0x00100000) {
|
||||
ax *= two53;
|
||||
n -= 53;
|
||||
ix = __HI(ax);
|
||||
}
|
||||
n += ((ix) >> 20) - 0x3ff;
|
||||
j = ix & 0x000fffff;
|
||||
/* determine interval */
|
||||
ix = j | 0x3ff00000; /* normalize ix */
|
||||
if (j <= 0x3988E)
|
||||
k = 0; /* |x|<sqrt(3/2) */
|
||||
else if (j < 0xBB67A)
|
||||
k = 1; /* |x|<sqrt(3) */
|
||||
else {
|
||||
k = 0;
|
||||
n += 1;
|
||||
ix -= 0x00100000;
|
||||
}
|
||||
__HI(ax) = ix;
|
||||
|
||||
/* compute s = s_h+s_l = (x-1)/(x+1) or (x-1.5)/(x+1.5) */
|
||||
u = ax - bp[k]; /* bp[0]=1.0, bp[1]=1.5 */
|
||||
v = one / (ax + bp[k]);
|
||||
s = u * v;
|
||||
s_h = s;
|
||||
__LO(s_h) = 0;
|
||||
/* t_h=ax+bp[k] High */
|
||||
t_h = zero;
|
||||
__HI(t_h) = ((ix >> 1) | 0x20000000) + 0x00080000 + (k << 18);
|
||||
t_l = ax - (t_h - bp[k]);
|
||||
s_l = v * ((u - s_h * t_h) - s_h * t_l);
|
||||
/* compute log(ax) */
|
||||
s2 = s * s;
|
||||
r = s2 * s2 * (L1 + s2 * (L2 + s2 * (L3 + s2 * (L4 + s2 * (L5 + s2 * L6)))));
|
||||
r += s_l * (s_h + s);
|
||||
s2 = s_h * s_h;
|
||||
t_h = 3.0 + s2 + r;
|
||||
__LO(t_h) = 0;
|
||||
t_l = r - ((t_h - 3.0) - s2);
|
||||
/* u+v = s*(1+...) */
|
||||
u = s_h * t_h;
|
||||
v = s_l * t_h + t_l * s;
|
||||
/* 2/(3log2)*(s+...) */
|
||||
p_h = u + v;
|
||||
__LO(p_h) = 0;
|
||||
p_l = v - (p_h - u);
|
||||
z_h = cp_h * p_h; /* cp_h+cp_l = 2/(3*log2) */
|
||||
z_l = cp_l * p_h + p_l * cp + dp_l[k];
|
||||
/* log2(ax) = (s+..)*2/(3*log2) = n + dp_h + z_h + z_l */
|
||||
t = (double)n;
|
||||
t1 = (((z_h + z_l) + dp_h[k]) + t);
|
||||
__LO(t1) = 0;
|
||||
t2 = z_l - (((t1 - t) - dp_h[k]) - z_h);
|
||||
}
|
||||
|
||||
s = one; /* s (sign of result -ve**odd) = -1 else = 1 */
|
||||
if (((((int)hx >> 31) + 1) | (yisint - 1)) == 0)
|
||||
s = -one; /* (-ve)**(odd int) */
|
||||
|
||||
/* split up y into y1+y2 and compute (y1+y2)*(t1+t2) */
|
||||
y1 = y;
|
||||
__LO(y1) = 0;
|
||||
p_l = (y - y1) * t1 + y * t2;
|
||||
p_h = y1 * t1;
|
||||
z = p_l + p_h;
|
||||
j = __HI(z);
|
||||
i = __LO(z);
|
||||
if (j >= 0x40900000) { /* z >= 1024 */
|
||||
if (((j - 0x40900000) | i) != 0) /* if z > 1024 */
|
||||
return s * huge * huge; /* overflow */
|
||||
else {
|
||||
if (p_l + ovt > z - p_h)
|
||||
return s * huge * huge; /* overflow */
|
||||
}
|
||||
} else if ((j & 0x7fffffff) >= 0x4090cc00) { /* z <= -1075 */
|
||||
if (((j - 0xc090cc00) | i) != 0) /* z < -1075 */
|
||||
return s * tiny * tiny; /* underflow */
|
||||
else {
|
||||
if (p_l <= z - p_h)
|
||||
return s * tiny * tiny; /* underflow */
|
||||
}
|
||||
}
|
||||
/*
|
||||
* compute 2**(p_h+p_l)
|
||||
*/
|
||||
i = j & 0x7fffffff;
|
||||
k = (i >> 20) - 0x3ff;
|
||||
n = 0;
|
||||
if (i > 0x3fe00000) { /* if |z| > 0.5, set n = [z+0.5] */
|
||||
n = j + (0x00100000 >> (k + 1));
|
||||
k = ((n & 0x7fffffff) >> 20) - 0x3ff; /* new k for n */
|
||||
t = zero;
|
||||
__HI(t) = (n & ~(0x000fffff >> k));
|
||||
n = ((n & 0x000fffff) | 0x00100000) >> (20 - k);
|
||||
if (j < 0)
|
||||
n = -n;
|
||||
p_h -= t;
|
||||
}
|
||||
t = p_l + p_h;
|
||||
__LO(t) = 0;
|
||||
u = t * lg2_h;
|
||||
v = (p_l - (t - p_h)) * lg2 + t * lg2_l;
|
||||
z = u + v;
|
||||
w = v - (z - u);
|
||||
t = z * z;
|
||||
t1 = z - t * (P1 + t * (P2 + t * (P3 + t * (P4 + t * P5))));
|
||||
r = (z * t1) / (t1 - two) - (w + z * w);
|
||||
z = one - (r - z);
|
||||
j = __HI(z);
|
||||
j += (n << 20);
|
||||
if ((j >> 20) <= 0)
|
||||
z = ldexp(z, n); /* subnormal output */
|
||||
else
|
||||
__HI(z) += (n << 20);
|
||||
return s * z;
|
||||
}
|
||||
|
||||
#endif /* defined(_DOUBLE_IS_32BITS) */
|
||||
|
||||
// EOF e_pow.c
|
||||
+179
@@ -0,0 +1,179 @@
|
||||
/* @(#)e_rem_pio2.c 1.4 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*
|
||||
*/
|
||||
|
||||
/* __ieee754_rem_pio2(x,y)
|
||||
*
|
||||
* return the remainder of x rem pi/2 in y[0]+y[1]
|
||||
* use __kernel_rem_pio2()
|
||||
*/
|
||||
|
||||
#include "math.h"
|
||||
|
||||
/*
|
||||
* Table of constants for 2/pi, 396 Hex digits (476 decimal) of 2/pi
|
||||
*/
|
||||
#ifdef __STDC__
|
||||
static const int two_over_pi[] = {
|
||||
#else
|
||||
static int two_over_pi[] = {
|
||||
#endif
|
||||
0xA2F983, 0x6E4E44, 0x1529FC, 0x2757D1, 0xF534DD, 0xC0DB62, 0x95993C, 0x439041, 0xFE5163, 0xABDEBB, 0xC561B7,
|
||||
0x246E3A, 0x424DD2, 0xE00649, 0x2EEA09, 0xD1921C, 0xFE1DEB, 0x1CB129, 0xA73EE8, 0x8235F5, 0x2EBB44, 0x84E99C,
|
||||
0x7026B4, 0x5F7E41, 0x3991D6, 0x398353, 0x39F49C, 0x845F8B, 0xBDF928, 0x3B1FF8, 0x97FFDE, 0x05980F, 0xEF2F11,
|
||||
0x8B5A0A, 0x6D1F6D, 0x367ECF, 0x27CB09, 0xB74F46, 0x3F669E, 0x5FEA2D, 0x7527BA, 0xC7EBE5, 0xF17B3D, 0x0739F7,
|
||||
0x8A5292, 0xEA6BFB, 0x5FB11F, 0x8D5D08, 0x560330, 0x46FC7B, 0x6BABF0, 0xCFBC20, 0x9AF436, 0x1DA9E3, 0x91615E,
|
||||
0xE61B08, 0x659985, 0x5F14A0, 0x68408D, 0xFFD880, 0x4D7327, 0x310606, 0x1556CA, 0x73A8C9, 0x60E27B, 0xC08C6B,
|
||||
};
|
||||
|
||||
#ifdef __STDC__
|
||||
static const int npio2_hw[] = {
|
||||
#else
|
||||
static int npio2_hw[] = {
|
||||
#endif
|
||||
0x3FF921FB, 0x400921FB, 0x4012D97C, 0x401921FB, 0x401F6A7A, 0x4022D97C, 0x4025FDBB, 0x402921FB, 0x402C463A, 0x402F6A7A, 0x4031475C,
|
||||
0x4032D97C, 0x40346B9C, 0x4035FDBB, 0x40378FDB, 0x403921FB, 0x403AB41B, 0x403C463A, 0x403DD85A, 0x403F6A7A, 0x40407E4C, 0x4041475C,
|
||||
0x4042106C, 0x4042D97C, 0x4043A28C, 0x40446B9C, 0x404534AC, 0x4045FDBB, 0x4046C6CB, 0x40478FDB, 0x404858EB, 0x404921FB,
|
||||
};
|
||||
|
||||
/*
|
||||
* invpio2: 53 bits of 2/pi
|
||||
* pio2_1: first 33 bit of pi/2
|
||||
* pio2_1t: pi/2 - pio2_1
|
||||
* pio2_2: second 33 bit of pi/2
|
||||
* pio2_2t: pi/2 - (pio2_1+pio2_2)
|
||||
* pio2_3: third 33 bit of pi/2
|
||||
* pio2_3t: pi/2 - (pio2_1+pio2_2+pio2_3)
|
||||
*/
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double
|
||||
#else
|
||||
static double
|
||||
#endif
|
||||
zero
|
||||
= 0.00000000000000000000e+00, /* 0x00000000, 0x00000000 */
|
||||
half = 5.00000000000000000000e-01, /* 0x3FE00000, 0x00000000 */
|
||||
two24 = 1.67772160000000000000e+07, /* 0x41700000, 0x00000000 */
|
||||
invpio2 = 6.36619772367581382433e-01, /* 0x3FE45F30, 0x6DC9C883 */
|
||||
pio2_1 = 1.57079632673412561417e+00, /* 0x3FF921FB, 0x54400000 */
|
||||
pio2_1t = 6.07710050650619224932e-11, /* 0x3DD0B461, 0x1A626331 */
|
||||
pio2_2 = 6.07710050630396597660e-11, /* 0x3DD0B461, 0x1A600000 */
|
||||
pio2_2t = 2.02226624879595063154e-21, /* 0x3BA3198A, 0x2E037073 */
|
||||
pio2_3 = 2.02226624871116645580e-21, /* 0x3BA3198A, 0x2E000000 */
|
||||
pio2_3t = 8.47842766036889956997e-32; /* 0x397B839A, 0x252049C1 */
|
||||
|
||||
#ifdef __STDC__
|
||||
int __ieee754_rem_pio2(double x, double* y)
|
||||
#else
|
||||
int __ieee754_rem_pio2(x, y) double x, y[];
|
||||
#endif
|
||||
{
|
||||
double z, w, t, r, fn;
|
||||
double tx[3];
|
||||
int e0, i, j, nx, n, ix, hx;
|
||||
|
||||
hx = __HI(x); /* high word of x */
|
||||
ix = hx & 0x7fffffff;
|
||||
if (ix <= 0x3fe921fb) /* |x| ~<= pi/4 , no need for reduction */
|
||||
{
|
||||
y[0] = x;
|
||||
y[1] = 0;
|
||||
return 0;
|
||||
}
|
||||
if (ix < 0x4002d97c) { /* |x| < 3pi/4, special case with n=+-1 */
|
||||
if (hx > 0) {
|
||||
z = x - pio2_1;
|
||||
if (ix != 0x3ff921fb) { /* 33+53 bit pi is good enough */
|
||||
y[0] = z - pio2_1t;
|
||||
y[1] = (z - y[0]) - pio2_1t;
|
||||
} else { /* near pi/2, use 33+33+53 bit pi */
|
||||
z -= pio2_2;
|
||||
y[0] = z - pio2_2t;
|
||||
y[1] = (z - y[0]) - pio2_2t;
|
||||
}
|
||||
return 1;
|
||||
} else { /* negative x */
|
||||
z = x + pio2_1;
|
||||
if (ix != 0x3ff921fb) { /* 33+53 bit pi is good enough */
|
||||
y[0] = z + pio2_1t;
|
||||
y[1] = (z - y[0]) + pio2_1t;
|
||||
} else { /* near pi/2, use 33+33+53 bit pi */
|
||||
z += pio2_2;
|
||||
y[0] = z + pio2_2t;
|
||||
y[1] = (z - y[0]) + pio2_2t;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
if (ix <= 0x413921fb) { /* |x| ~<= 2^19*(pi/2), medium size */
|
||||
t = fabs(x);
|
||||
n = (int)(t * invpio2 + half);
|
||||
fn = (double)n;
|
||||
r = t - fn * pio2_1;
|
||||
w = fn * pio2_1t; /* 1st round good to 85 bit */
|
||||
if (n < 32 && ix != npio2_hw[n - 1]) {
|
||||
y[0] = r - w; /* quick check no cancellation */
|
||||
} else {
|
||||
j = ix >> 20;
|
||||
y[0] = r - w;
|
||||
i = j - (((__HI(y[0])) >> 20) & 0x7ff);
|
||||
if (i > 16) { /* 2nd iteration needed, good to 118 */
|
||||
t = r;
|
||||
r = t - fn * pio2_2;
|
||||
w = fn * pio2_2t - ((t - r) - fn * pio2_2);
|
||||
y[0] = r - w;
|
||||
i = j - (((__HI(y[0])) >> 20) & 0x7ff);
|
||||
if (i > 49) { /* 3rd iteration need, 151 bits acc */
|
||||
t = r; /* will cover all possible cases */
|
||||
w = fn * pio2_3;
|
||||
r = t - w;
|
||||
w = fn * pio2_3t - ((t - r) - w);
|
||||
y[0] = r - w;
|
||||
}
|
||||
}
|
||||
}
|
||||
y[1] = (r - y[0]) - w;
|
||||
if (hx < 0) {
|
||||
y[0] = -y[0];
|
||||
y[1] = -y[1];
|
||||
return -n;
|
||||
} else
|
||||
return n;
|
||||
}
|
||||
/*
|
||||
* all other (large) arguments
|
||||
*/
|
||||
if (ix >= 0x7ff00000) { /* x is inf or NaN */
|
||||
y[0] = y[1] = x - x;
|
||||
return 0;
|
||||
}
|
||||
/* set z = scalbn(|x|,ilogb(x)-23) */
|
||||
__LO(z) = __LO(x);
|
||||
e0 = (ix >> 20) - 1046; /* e0 = ilogb(z)-23; */
|
||||
__HI(z) = ix - (e0 << 20);
|
||||
for (i = 0; i < 2; i++) {
|
||||
tx[i] = (double)((int)(z));
|
||||
z = (z - tx[i]) * two24;
|
||||
}
|
||||
tx[2] = z;
|
||||
nx = 3;
|
||||
while (tx[nx - 1] == zero)
|
||||
nx--; /* skip zero term */
|
||||
n = __kernel_rem_pio2(tx, y, e0, nx, 2, two_over_pi);
|
||||
if (hx < 0) {
|
||||
y[0] = -y[0];
|
||||
y[1] = -y[1];
|
||||
return -n;
|
||||
}
|
||||
return n;
|
||||
}
|
||||
+461
@@ -0,0 +1,461 @@
|
||||
/* @(#)e_sqrt.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/* __ieee754_sqrt(x)
|
||||
* Return correctly rounded sqrt.
|
||||
* ------------------------------------------
|
||||
* | Use the hardware sqrt if you have one |
|
||||
* ------------------------------------------
|
||||
* Method:
|
||||
* Bit by bit method using integer arithmetic. (Slow, but portable)
|
||||
* 1. Normalization
|
||||
* Scale x to y in [1,4) with even powers of 2:
|
||||
* find an integer k such that 1 <= (y=x*2^(2k)) < 4, then
|
||||
* sqrt(x) = 2^k * sqrt(y)
|
||||
* 2. Bit by bit computation
|
||||
* Let q = sqrt(y) truncated to i bit after binary point (q = 1),
|
||||
* i 0
|
||||
* i+1 2
|
||||
* s = 2*q , and y = 2 * ( y - q ). (1)
|
||||
* i i i i
|
||||
*
|
||||
* To compute q from q , one checks whether
|
||||
* i+1 i
|
||||
*
|
||||
* -(i+1) 2
|
||||
* (q + 2 ) <= y. (2)
|
||||
* i
|
||||
* -(i+1)
|
||||
* If (2) is false, then q = q ; otherwise q = q + 2 .
|
||||
* i+1 i i+1 i
|
||||
*
|
||||
* With some algebric manipulation, it is not difficult to see
|
||||
* that (2) is equivalent to
|
||||
* -(i+1)
|
||||
* s + 2 <= y (3)
|
||||
* i i
|
||||
*
|
||||
* The advantage of (3) is that s and y can be computed by
|
||||
* i i
|
||||
* the following recurrence formula:
|
||||
* if (3) is false
|
||||
*
|
||||
* s = s , y = y ; (4)
|
||||
* i+1 i i+1 i
|
||||
*
|
||||
* otherwise,
|
||||
* -i -(i+1)
|
||||
* s = s + 2 , y = y - s - 2 (5)
|
||||
* i+1 i i+1 i i
|
||||
*
|
||||
* One may easily use induction to prove (4) and (5).
|
||||
* Note. Since the left hand side of (3) contain only i+2 bits,
|
||||
* it does not necessary to do a full (53-bit) comparison
|
||||
* in (3).
|
||||
* 3. Final rounding
|
||||
* After generating the 53 bits result, we compute one more bit.
|
||||
* Together with the remainder, we can decide whether the
|
||||
* result is exact, bigger than 1/2ulp, or less than 1/2ulp
|
||||
* (it will never equal to 1/2ulp).
|
||||
* The rounding mode can be detected by checking whether
|
||||
* huge + tiny is equal to huge, and whether huge - tiny is
|
||||
* equal to huge for some floating point number "huge" and "tiny".
|
||||
*
|
||||
* Special cases:
|
||||
* sqrt(+-0) = +-0 ... exact
|
||||
* sqrt(inf) = inf
|
||||
* sqrt(-ve) = NaN ... with invalid signal
|
||||
* sqrt(NaN) = NaN ... with invalid signal for signaling NaN
|
||||
*
|
||||
* Other methods : see the appended file at the end of the program below.
|
||||
*---------------
|
||||
*/
|
||||
|
||||
#include "errno.h"
|
||||
#include "math.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double one = 1.0, tiny = 1.0e-300;
|
||||
#else
|
||||
static double one = 1.0, tiny = 1.0e-300;
|
||||
#endif
|
||||
|
||||
#ifdef __STDC__
|
||||
double __ieee754_sqrt(double x)
|
||||
#else
|
||||
double __ieee754_sqrt(x) double x;
|
||||
#endif
|
||||
{
|
||||
double z;
|
||||
int sign = (int)0x80000000;
|
||||
unsigned r, t1, s1, ix1, q1;
|
||||
int ix0, s0, q, m, t, i;
|
||||
|
||||
ix0 = __HI(x); /* high word of x */
|
||||
ix1 = __LO(x); /* low word of x */
|
||||
|
||||
/* take care of Inf and NaN */
|
||||
if ((ix0 & 0x7ff00000) == 0x7ff00000) {
|
||||
errno = 33;
|
||||
return x * x + x; /* sqrt(NaN)=NaN, sqrt(+inf)=+inf
|
||||
sqrt(-inf)=sNaN */
|
||||
}
|
||||
/* take care of zero */
|
||||
if (ix0 <= 0) {
|
||||
if (((ix0 & (~sign)) | ix1) == 0)
|
||||
return x; /* sqrt(+-0) = +-0 */
|
||||
else if (ix0 < 0) {
|
||||
errno = 33;
|
||||
return NAN;
|
||||
} /* sqrt(-ve) = sNaN */
|
||||
}
|
||||
/* normalize x */
|
||||
m = (ix0 >> 20);
|
||||
if (m == 0) { /* subnormal x */
|
||||
while (ix0 == 0) {
|
||||
m -= 21;
|
||||
ix0 |= (ix1 >> 11);
|
||||
ix1 <<= 21;
|
||||
}
|
||||
for (i = 0; (ix0 & 0x00100000) == 0; i++)
|
||||
ix0 <<= 1;
|
||||
m -= i - 1;
|
||||
ix0 |= (ix1 >> (32 - i));
|
||||
ix1 <<= i;
|
||||
}
|
||||
m -= 1023; /* unbias exponent */
|
||||
ix0 = (ix0 & 0x000fffff) | 0x00100000;
|
||||
if (m & 1) { /* odd m, double x to make it even */
|
||||
ix0 += ix0 + ((ix1 & sign) >> 31);
|
||||
ix1 += ix1;
|
||||
}
|
||||
m >>= 1; /* m = [m/2] */
|
||||
|
||||
/* generate sqrt(x) bit by bit */
|
||||
ix0 += ix0 + ((ix1 & sign) >> 31);
|
||||
ix1 += ix1;
|
||||
q = q1 = s0 = s1 = 0; /* [q,q1] = sqrt(x) */
|
||||
r = 0x00200000; /* r = moving bit from right to left */
|
||||
|
||||
while (r != 0) {
|
||||
t = s0 + r;
|
||||
if (t <= ix0) {
|
||||
s0 = t + r;
|
||||
ix0 -= t;
|
||||
q += r;
|
||||
}
|
||||
ix0 += ix0 + ((ix1 & sign) >> 31);
|
||||
ix1 += ix1;
|
||||
r >>= 1;
|
||||
}
|
||||
|
||||
r = sign;
|
||||
while (r != 0) {
|
||||
t1 = s1 + r;
|
||||
t = s0;
|
||||
if ((t < ix0) || ((t == ix0) && (t1 <= ix1))) {
|
||||
s1 = t1 + r;
|
||||
if (((t1 & sign) == sign) && (s1 & sign) == 0)
|
||||
s0 += 1;
|
||||
ix0 -= t;
|
||||
if (ix1 < t1)
|
||||
ix0 -= 1;
|
||||
ix1 -= t1;
|
||||
q1 += r;
|
||||
}
|
||||
ix0 += ix0 + ((ix1 & sign) >> 31);
|
||||
ix1 += ix1;
|
||||
r >>= 1;
|
||||
}
|
||||
|
||||
/* use floating add to find out rounding direction */
|
||||
if ((ix0 | ix1) != 0) {
|
||||
z = one - tiny; /* trigger inexact flag */
|
||||
if (z >= one) {
|
||||
z = one + tiny;
|
||||
if (q1 == (unsigned)0xffffffff) {
|
||||
q1 = 0;
|
||||
q += 1;
|
||||
} else if (z > one) {
|
||||
if (q1 == (unsigned)0xfffffffe)
|
||||
q += 1;
|
||||
q1 += 2;
|
||||
} else
|
||||
q1 += (q1 & 1);
|
||||
}
|
||||
}
|
||||
ix0 = (q >> 1) + 0x3fe00000;
|
||||
ix1 = q1 >> 1;
|
||||
if ((q & 1) == 1)
|
||||
ix1 |= sign;
|
||||
ix0 += (m << 20);
|
||||
__HI(z) = ix0;
|
||||
__LO(z) = ix1;
|
||||
return z;
|
||||
}
|
||||
|
||||
/*
|
||||
Other methods (use floating-point arithmetic)
|
||||
-------------
|
||||
(This is a copy of a drafted paper by Prof W. Kahan
|
||||
and K.C. Ng, written in May, 1986)
|
||||
|
||||
Two algorithms are given here to implement sqrt(x)
|
||||
(IEEE double precision arithmetic) in software.
|
||||
Both supply sqrt(x) correctly rounded. The first algorithm (in
|
||||
Section A) uses newton iterations and involves four divisions.
|
||||
The second one uses reciproot iterations to avoid division, but
|
||||
requires more multiplications. Both algorithms need the ability
|
||||
to chop results of arithmetic operations instead of round them,
|
||||
and the INEXACT flag to indicate when an arithmetic operation
|
||||
is executed exactly with no roundoff error, all part of the
|
||||
standard (IEEE 754-1985). The ability to perform shift, add,
|
||||
subtract and logical AND operations upon 32-bit words is needed
|
||||
too, though not part of the standard.
|
||||
|
||||
A. sqrt(x) by Newton Iteration
|
||||
|
||||
(1) Initial approximation
|
||||
|
||||
Let x0 and x1 be the leading and the trailing 32-bit words of
|
||||
a floating point number x (in IEEE double format) respectively
|
||||
|
||||
1 11 52 ...widths
|
||||
------------------------------------------------------
|
||||
x: |s| e | f |
|
||||
------------------------------------------------------
|
||||
msb lsb msb lsb ...order
|
||||
|
||||
|
||||
------------------------ ------------------------
|
||||
x0: |s| e | f1 | x1: | f2 |
|
||||
------------------------ ------------------------
|
||||
|
||||
By performing shifts and subtracts on x0 and x1 (both regarded
|
||||
as integers), we obtain an 8-bit approximation of sqrt(x) as
|
||||
follows.
|
||||
|
||||
k := (x0>>1) + 0x1ff80000;
|
||||
y0 := k - T1[31&(k>>15)]. ... y ~ sqrt(x) to 8 bits
|
||||
Here k is a 32-bit integer and T1[] is an integer array containing
|
||||
correction terms. Now magically the floating value of y (y's
|
||||
leading 32-bit word is y0, the value of its trailing word is 0)
|
||||
approximates sqrt(x) to almost 8-bit.
|
||||
|
||||
Value of T1:
|
||||
static int T1[32]= {
|
||||
0, 1024, 3062, 5746, 9193, 13348, 18162, 23592,
|
||||
29598, 36145, 43202, 50740, 58733, 67158, 75992, 85215,
|
||||
83599, 71378, 60428, 50647, 41945, 34246, 27478, 21581,
|
||||
16499, 12183, 8588, 5674, 3403, 1742, 661, 130,};
|
||||
|
||||
(2) Iterative refinement
|
||||
|
||||
Apply Heron's rule three times to y, we have y approximates
|
||||
sqrt(x) to within 1 ulp (Unit in the Last Place):
|
||||
|
||||
y := (y+x/y)/2 ... almost 17 sig. bits
|
||||
y := (y+x/y)/2 ... almost 35 sig. bits
|
||||
y := y-(y-x/y)/2 ... within 1 ulp
|
||||
|
||||
|
||||
Remark 1.
|
||||
Another way to improve y to within 1 ulp is:
|
||||
|
||||
y := (y+x/y) ... almost 17 sig. bits to 2*sqrt(x)
|
||||
y := y - 0x00100006 ... almost 18 sig. bits to sqrt(x)
|
||||
|
||||
2
|
||||
(x-y )*y
|
||||
y := y + 2* ---------- ...within 1 ulp
|
||||
2
|
||||
3y + x
|
||||
|
||||
|
||||
This formula has one division fewer than the one above; however,
|
||||
it requires more multiplications and additions. Also x must be
|
||||
scaled in advance to avoid spurious overflow in evaluating the
|
||||
expression 3y*y+x. Hence it is not recommended uless division
|
||||
is slow. If division is very slow, then one should use the
|
||||
reciproot algorithm given in section B.
|
||||
|
||||
(3) Final adjustment
|
||||
|
||||
By twiddling y's last bit it is possible to force y to be
|
||||
correctly rounded according to the prevailing rounding mode
|
||||
as follows. Let r and i be copies of the rounding mode and
|
||||
inexact flag before entering the square root program. Also we
|
||||
use the expression y+-ulp for the next representable floating
|
||||
numbers (up and down) of y. Note that y+-ulp = either fixed
|
||||
point y+-1, or multiply y by nextafter(1,+-inf) in chopped
|
||||
mode.
|
||||
|
||||
I := FALSE; ... reset INEXACT flag I
|
||||
R := RZ; ... set rounding mode to round-toward-zero
|
||||
z := x/y; ... chopped quotient, possibly inexact
|
||||
If(not I) then { ... if the quotient is exact
|
||||
if(z=y) {
|
||||
I := i; ... restore inexact flag
|
||||
R := r; ... restore rounded mode
|
||||
return sqrt(x):=y.
|
||||
} else {
|
||||
z := z - ulp; ... special rounding
|
||||
}
|
||||
}
|
||||
i := TRUE; ... sqrt(x) is inexact
|
||||
If (r=RN) then z=z+ulp ... rounded-to-nearest
|
||||
If (r=RP) then { ... round-toward-+inf
|
||||
y = y+ulp; z=z+ulp;
|
||||
}
|
||||
y := y+z; ... chopped sum
|
||||
y0:=y0-0x00100000; ... y := y/2 is correctly rounded.
|
||||
I := i; ... restore inexact flag
|
||||
R := r; ... restore rounded mode
|
||||
return sqrt(x):=y.
|
||||
|
||||
(4) Special cases
|
||||
|
||||
Square root of +inf, +-0, or NaN is itself;
|
||||
Square root of a negative number is NaN with invalid signal.
|
||||
|
||||
|
||||
B. sqrt(x) by Reciproot Iteration
|
||||
|
||||
(1) Initial approximation
|
||||
|
||||
Let x0 and x1 be the leading and the trailing 32-bit words of
|
||||
a floating point number x (in IEEE double format) respectively
|
||||
(see section A). By performing shifs and subtracts on x0 and y0,
|
||||
we obtain a 7.8-bit approximation of 1/sqrt(x) as follows.
|
||||
|
||||
k := 0x5fe80000 - (x0>>1);
|
||||
y0:= k - T2[63&(k>>14)]. ... y ~ 1/sqrt(x) to 7.8 bits
|
||||
|
||||
Here k is a 32-bit integer and T2[] is an integer array
|
||||
containing correction terms. Now magically the floating
|
||||
value of y (y's leading 32-bit word is y0, the value of
|
||||
its trailing word y1 is set to zero) approximates 1/sqrt(x)
|
||||
to almost 7.8-bit.
|
||||
|
||||
Value of T2:
|
||||
static int T2[64]= {
|
||||
0x1500, 0x2ef8, 0x4d67, 0x6b02, 0x87be, 0xa395, 0xbe7a, 0xd866,
|
||||
0xf14a, 0x1091b,0x11fcd,0x13552,0x14999,0x15c98,0x16e34,0x17e5f,
|
||||
0x18d03,0x19a01,0x1a545,0x1ae8a,0x1b5c4,0x1bb01,0x1bfde,0x1c28d,
|
||||
0x1c2de,0x1c0db,0x1ba73,0x1b11c,0x1a4b5,0x1953d,0x18266,0x16be0,
|
||||
0x1683e,0x179d8,0x18a4d,0x19992,0x1a789,0x1b445,0x1bf61,0x1c989,
|
||||
0x1d16d,0x1d77b,0x1dddf,0x1e2ad,0x1e5bf,0x1e6e8,0x1e654,0x1e3cd,
|
||||
0x1df2a,0x1d635,0x1cb16,0x1be2c,0x1ae4e,0x19bde,0x1868e,0x16e2e,
|
||||
0x1527f,0x1334a,0x11051,0xe951, 0xbe01, 0x8e0d, 0x5924, 0x1edd,};
|
||||
|
||||
(2) Iterative refinement
|
||||
|
||||
Apply Reciproot iteration three times to y and multiply the
|
||||
result by x to get an approximation z that matches sqrt(x)
|
||||
to about 1 ulp. To be exact, we will have
|
||||
-1ulp < sqrt(x)-z<1.0625ulp.
|
||||
|
||||
... set rounding mode to Round-to-nearest
|
||||
y := y*(1.5-0.5*x*y*y) ... almost 15 sig. bits to 1/sqrt(x)
|
||||
y := y*((1.5-2^-30)+0.5*x*y*y)... about 29 sig. bits to 1/sqrt(x)
|
||||
... special arrangement for better accuracy
|
||||
z := x*y ... 29 bits to sqrt(x), with z*y<1
|
||||
z := z + 0.5*z*(1-z*y) ... about 1 ulp to sqrt(x)
|
||||
|
||||
Remark 2. The constant 1.5-2^-30 is chosen to bias the error so that
|
||||
(a) the term z*y in the final iteration is always less than 1;
|
||||
(b) the error in the final result is biased upward so that
|
||||
-1 ulp < sqrt(x) - z < 1.0625 ulp
|
||||
instead of |sqrt(x)-z|<1.03125ulp.
|
||||
|
||||
(3) Final adjustment
|
||||
|
||||
By twiddling y's last bit it is possible to force y to be
|
||||
correctly rounded according to the prevailing rounding mode
|
||||
as follows. Let r and i be copies of the rounding mode and
|
||||
inexact flag before entering the square root program. Also we
|
||||
use the expression y+-ulp for the next representable floating
|
||||
numbers (up and down) of y. Note that y+-ulp = either fixed
|
||||
point y+-1, or multiply y by nextafter(1,+-inf) in chopped
|
||||
mode.
|
||||
|
||||
R := RZ; ... set rounding mode to round-toward-zero
|
||||
switch(r) {
|
||||
case RN: ... round-to-nearest
|
||||
if(x<= z*(z-ulp)...chopped) z = z - ulp; else
|
||||
if(x<= z*(z+ulp)...chopped) z = z; else z = z+ulp;
|
||||
break;
|
||||
case RZ:case RM: ... round-to-zero or round-to--inf
|
||||
R:=RP; ... reset rounding mod to round-to-+inf
|
||||
if(x<z*z ... rounded up) z = z - ulp; else
|
||||
if(x>=(z+ulp)*(z+ulp) ...rounded up) z = z+ulp;
|
||||
break;
|
||||
case RP: ... round-to-+inf
|
||||
if(x>(z+ulp)*(z+ulp)...chopped) z = z+2*ulp; else
|
||||
if(x>z*z ...chopped) z = z+ulp;
|
||||
break;
|
||||
}
|
||||
|
||||
Remark 3. The above comparisons can be done in fixed point. For
|
||||
example, to compare x and w=z*z chopped, it suffices to compare
|
||||
x1 and w1 (the trailing parts of x and w), regarding them as
|
||||
two's complement integers.
|
||||
|
||||
...Is z an exact square root?
|
||||
To determine whether z is an exact square root of x, let z1 be the
|
||||
trailing part of z, and also let x0 and x1 be the leading and
|
||||
trailing parts of x.
|
||||
|
||||
If ((z1&0x03ffffff)!=0) ... not exact if trailing 26 bits of z!=0
|
||||
I := 1; ... Raise Inexact flag: z is not exact
|
||||
else {
|
||||
j := 1 - [(x0>>20)&1] ... j = logb(x) mod 2
|
||||
k := z1 >> 26; ... get z's 25-th and 26-th
|
||||
fraction bits
|
||||
I := i or (k&j) or ((k&(j+j+1))!=(x1&3));
|
||||
}
|
||||
R:= r ... restore rounded mode
|
||||
return sqrt(x):=z.
|
||||
|
||||
If multiplication is cheaper then the foregoing red tape, the
|
||||
Inexact flag can be evaluated by
|
||||
|
||||
I := i;
|
||||
I := (z*z!=x) or I.
|
||||
|
||||
Note that z*z can overwrite I; this value must be sensed if it is
|
||||
True.
|
||||
|
||||
Remark 4. If z*z = x exactly, then bit 25 to bit 0 of z1 must be
|
||||
zero.
|
||||
|
||||
--------------------
|
||||
z1: | f2 |
|
||||
--------------------
|
||||
bit 31 bit 0
|
||||
|
||||
Further more, bit 27 and 26 of z1, bit 0 and 1 of x1, and the odd
|
||||
or even of logb(x) have the following relations:
|
||||
|
||||
-------------------------------------------------
|
||||
bit 27,26 of z1 bit 1,0 of x1 logb(x)
|
||||
-------------------------------------------------
|
||||
00 00 odd and even
|
||||
01 01 even
|
||||
10 10 odd
|
||||
10 00 even
|
||||
11 01 even
|
||||
-------------------------------------------------
|
||||
|
||||
(4) Special cases (see (4) of Section A).
|
||||
|
||||
*/
|
||||
@@ -0,0 +1,92 @@
|
||||
/* @(#)k_cos.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
* __kernel_cos( x, y )
|
||||
* kernel cos function on [-pi/4, pi/4], pi/4 ~ 0.785398164
|
||||
* Input x is assumed to be bounded by ~pi/4 in magnitude.
|
||||
* Input y is the tail of x.
|
||||
*
|
||||
* Algorithm
|
||||
* 1. Since cos(-x) = cos(x), we need only to consider positive x.
|
||||
* 2. if x < 2^-27 (hx<0x3e400000 0), return 1 with inexact if x!=0.
|
||||
* 3. cos(x) is approximated by a polynomial of degree 14 on
|
||||
* [0,pi/4]
|
||||
* 4 14
|
||||
* cos(x) ~ 1 - x*x/2 + C1*x + ... + C6*x
|
||||
* where the remez error is
|
||||
*
|
||||
* | 2 4 6 8 10 12 14 | -58
|
||||
* |cos(x)-(1-.5*x +C1*x +C2*x +C3*x +C4*x +C5*x +C6*x )| <= 2
|
||||
* | |
|
||||
*
|
||||
* 4 6 8 10 12 14
|
||||
* 4. let r = C1*x +C2*x +C3*x +C4*x +C5*x +C6*x , then
|
||||
* cos(x) = 1 - x*x/2 + r
|
||||
* since cos(x+y) ~ cos(x) - sin(x)*y
|
||||
* ~ cos(x) - x*y,
|
||||
* a correction term is necessary in cos(x) and hence
|
||||
* cos(x+y) = 1 - (x*x/2 - (r - x*y))
|
||||
* For better accuracy when x > 0.3, let qx = |x|/4 with
|
||||
* the last 32 bits mask off, and if x > 0.78125, let qx = 0.28125.
|
||||
* Then
|
||||
* cos(x+y) = (1-qx) - ((x*x/2-qx) - (r-x*y)).
|
||||
* Note that 1-qx and (x*x/2-qx) is EXACT here, and the
|
||||
* magnitude of the latter is at least a quarter of x*x/2,
|
||||
* thus, reducing the rounding error in the subtraction.
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double
|
||||
#else
|
||||
static double
|
||||
#endif
|
||||
one
|
||||
= 1.00000000000000000000e+00, /* 0x3FF00000, 0x00000000 */
|
||||
C1 = 4.16666666666666019037e-02, /* 0x3FA55555, 0x5555554C */
|
||||
C2 = -1.38888888888741095749e-03, /* 0xBF56C16C, 0x16C15177 */
|
||||
C3 = 2.48015872894767294178e-05, /* 0x3EFA01A0, 0x19CB1590 */
|
||||
C4 = -2.75573143513906633035e-07, /* 0xBE927E4F, 0x809C52AD */
|
||||
C5 = 2.08757232129817482790e-09, /* 0x3E21EE9E, 0xBDB4B1C4 */
|
||||
C6 = -1.13596475577881948265e-11; /* 0xBDA8FAE9, 0xBE8838D4 */
|
||||
|
||||
#ifdef __STDC__
|
||||
double __kernel_cos(double x, double y)
|
||||
#else
|
||||
double __kernel_cos(x, y) double x, y;
|
||||
#endif
|
||||
{
|
||||
double a, hz, z, r, qx;
|
||||
int ix;
|
||||
ix = __HI(x) & 0x7fffffff; /* ix = |x|'s high word*/
|
||||
if (ix < 0x3e400000) { /* if x < 2**27 */
|
||||
if (((int)x) == 0)
|
||||
return one; /* generate inexact */
|
||||
}
|
||||
z = x * x;
|
||||
r = z * (C1 + z * (C2 + z * (C3 + z * (C4 + z * (C5 + z * C6)))));
|
||||
if (ix < 0x3FD33333) /* if |x| < 0.3 */
|
||||
return one - (0.5 * z - (z * r - x * y));
|
||||
else {
|
||||
if (ix > 0x3fe90000) { /* x > 0.78125 */
|
||||
qx = 0.28125;
|
||||
} else {
|
||||
__HI(qx) = ix - 0x00200000; /* x/4 */
|
||||
__LO(qx) = 0;
|
||||
}
|
||||
hz = 0.5 * z - qx;
|
||||
a = one - qx;
|
||||
return a - (hz - (z * r - x * y));
|
||||
}
|
||||
}
|
||||
+352
@@ -0,0 +1,352 @@
|
||||
/* @(#)k_rem_pio2.c 1.2 95/01/04 */
|
||||
/* $Id: k_rem_pio2.c,v 1.2.14.1 2002/01/31 15:24:13 ceciliar Exp $ */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
* __kernel_rem_pio2(x,y,e0,nx,prec,ipio2)
|
||||
* double x[],y[]; int e0,nx,prec; int ipio2[];
|
||||
*
|
||||
* __kernel_rem_pio2 return the last three digits of N with
|
||||
* y = x - N*pi/2
|
||||
* so that |y| < pi/2.
|
||||
*
|
||||
* The method is to compute the integer (mod 8) and fraction parts of
|
||||
* (2/pi)*x without doing the full multiplication. In general we
|
||||
* skip the part of the product that are known to be a huge integer (
|
||||
* more accurately, = 0 mod 8 ). Thus the number of operations are
|
||||
* independent of the exponent of the input.
|
||||
*
|
||||
* (2/pi) is represented by an array of 24-bit integers in ipio2[].
|
||||
*
|
||||
* Input parameters:
|
||||
* x[] The input value (must be positive) is broken into nx
|
||||
* pieces of 24-bit integers in double precision format.
|
||||
* x[i] will be the i-th 24 bit of x. The scaled exponent
|
||||
* of x[0] is given in input parameter e0 (i.e., x[0]*2^e0
|
||||
* match x's up to 24 bits.
|
||||
*
|
||||
* Example of breaking a double positive z into x[0]+x[1]+x[2]:
|
||||
* e0 = ilogb(z)-23
|
||||
* z = ldexp(z,-e0)
|
||||
* for i = 0,1,2
|
||||
* x[i] = floor(z)
|
||||
* z = (z-x[i])*2**24
|
||||
*
|
||||
*
|
||||
* y[] ouput result in an array of double precision numbers.
|
||||
* The dimension of y[] is:
|
||||
* 24-bit precision 1
|
||||
* 53-bit precision 2
|
||||
* 64-bit precision 2
|
||||
* 113-bit precision 3
|
||||
* The actual value is the sum of them. Thus for 113-bit
|
||||
* precison, one may have to do something like:
|
||||
*
|
||||
* long double t,w,r_head, r_tail;
|
||||
* t = (long double)y[2] + (long double)y[1];
|
||||
* w = (long double)y[0];
|
||||
* r_head = t+w;
|
||||
* r_tail = w - (r_head - t);
|
||||
*
|
||||
* e0 The exponent of x[0]
|
||||
*
|
||||
* nx dimension of x[]
|
||||
*
|
||||
* prec an integer indicating the precision:
|
||||
* 0 24 bits (single)
|
||||
* 1 53 bits (double)
|
||||
* 2 64 bits (extended)
|
||||
* 3 113 bits (quad)
|
||||
*
|
||||
* ipio2[]
|
||||
* integer array, contains the (24*i)-th to (24*i+23)-th
|
||||
* bit of 2/pi after binary point. The corresponding
|
||||
* floating value is
|
||||
*
|
||||
* ipio2[i] * 2^(-24(i+1)).
|
||||
*
|
||||
* External function:
|
||||
* double ldexp(), floor();
|
||||
*
|
||||
*
|
||||
* Here is the description of some local variables:
|
||||
*
|
||||
* jk jk+1 is the initial number of terms of ipio2[] needed
|
||||
* in the computation. The recommended value is 2,3,4,
|
||||
* 6 for single, double, extended,and quad.
|
||||
*
|
||||
* jz local integer variable indicating the number of
|
||||
* terms of ipio2[] used.
|
||||
*
|
||||
* jx nx - 1
|
||||
*
|
||||
* jv index for pointing to the suitable ipio2[] for the
|
||||
* computation. In general, we want
|
||||
* ( 2^e0*x[0] * ipio2[jv-1]*2^(-24jv) )/8
|
||||
* is an integer. Thus
|
||||
* e0-3-24*jv >= 0 or (e0-3)/24 >= jv
|
||||
* Hence jv = max(0,(e0-3)/24).
|
||||
*
|
||||
* jp jp+1 is the number of terms in PIo2[] needed, jp = jk.
|
||||
*
|
||||
* q[] double array with integral value, representing the
|
||||
* 24-bits chunk of the product of x and 2/pi.
|
||||
*
|
||||
* q0 the corresponding exponent of q[0]. Note that the
|
||||
* exponent for q[i] would be q0-24*i.
|
||||
*
|
||||
* PIo2[] double precision array, obtained by cutting pi/2
|
||||
* into 24 bits chunks.
|
||||
*
|
||||
* f[] ipio2[] in floating point
|
||||
*
|
||||
* iq[] integer array by breaking up q[] in 24-bits chunk.
|
||||
*
|
||||
* fq[] final product of x*(2/pi) in fq[0],..,fq[jk]
|
||||
*
|
||||
* ih integer. If >0 it indicates q[] is >= 0.5, hence
|
||||
* it also indicates the *sign* of the result.
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
* Constants:
|
||||
* The hexadecimal values are the intended ones for the following
|
||||
* constants. The decimal values may be used, provided that the
|
||||
* compiler will convert from decimal to binary accurately enough
|
||||
* to produce the hexadecimal values shown.
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const int init_jk[] = { 2, 3, 4, 6 };
|
||||
/* initial value for jk */ /*- cc 020130 -*/
|
||||
#else
|
||||
static int init_jk[] = { 2, 3, 4, 6 }; /*- cc 020130 -*/
|
||||
#endif
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double PIo2[] = {
|
||||
#else
|
||||
static double PIo2[] = {
|
||||
#endif
|
||||
1.57079625129699707031e+00, /* 0x3FF921FB, 0x40000000 */
|
||||
7.54978941586159635335e-08, /* 0x3E74442D, 0x00000000 */
|
||||
5.39030252995776476554e-15, /* 0x3CF84698, 0x80000000 */
|
||||
3.28200341580791294123e-22, /* 0x3B78CC51, 0x60000000 */
|
||||
1.27065575308067607349e-29, /* 0x39F01B83, 0x80000000 */
|
||||
1.22933308981111328932e-36, /* 0x387A2520, 0x40000000 */
|
||||
2.73370053816464559624e-44, /* 0x36E38222, 0x80000000 */
|
||||
2.16741683877804819444e-51, /* 0x3569F31D, 0x00000000 */
|
||||
};
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double
|
||||
#else
|
||||
static double
|
||||
#endif
|
||||
zero
|
||||
= 0.0,
|
||||
one = 1.0, two24 = 1.67772160000000000000e+07, /* 0x41700000, 0x00000000 */
|
||||
twon24 = 5.96046447753906250000e-08; /* 0x3E700000, 0x00000000 */
|
||||
|
||||
#ifdef __STDC__
|
||||
int __kernel_rem_pio2(double* x, double* y, int e0, int nx, int prec, const int* ipio2) /*- cc 020130 -*/
|
||||
#else
|
||||
int __kernel_rem_pio2(x, y, e0, nx, prec, ipio2) /*- cc 020130 -*/
|
||||
double x[],
|
||||
y[];
|
||||
int e0, nx, prec;
|
||||
int ipio2[]; /*- cc 020130 -*/
|
||||
#endif
|
||||
{
|
||||
int jz, jx, jv, jp, jk, carry, n, iq[20], i, j, k, m, q0, ih; /*- cc 020130 -*/
|
||||
double z, fw, f[20], fq[20], q[20];
|
||||
|
||||
/* initialize jk*/
|
||||
jk = init_jk[prec];
|
||||
jp = jk;
|
||||
|
||||
/* determine jx,jv,q0, note that 3>q0 */
|
||||
jx = nx - 1;
|
||||
jv = (e0 - 3) / 24;
|
||||
if (jv < 0)
|
||||
jv = 0;
|
||||
q0 = e0 - 24 * (jv + 1);
|
||||
|
||||
/* set up f[0] to f[jx+jk] where f[jx+jk] = ipio2[jv+jk] */
|
||||
j = jv - jx;
|
||||
m = jx + jk;
|
||||
for (i = 0; i <= m; i++, j++)
|
||||
f[i] = (j < 0) ? zero : (double)ipio2[j];
|
||||
|
||||
/* compute q[0],q[1],...q[jk] */
|
||||
for (i = 0; i <= jk; i++) {
|
||||
for (j = 0, fw = 0.0; j <= jx; j++)
|
||||
fw += x[j] * f[jx + i - j];
|
||||
q[i] = fw;
|
||||
}
|
||||
|
||||
jz = jk;
|
||||
recompute:
|
||||
/* distill q[] into iq[] reversingly */
|
||||
for (i = 0, j = jz, z = q[jz]; j > 0; i++, j--) {
|
||||
fw = (double)((int)(twon24 * z)); /*- cc 020130 -*/
|
||||
iq[i] = (int)(z - two24 * fw); /*- cc 020130 -*/
|
||||
z = q[j - 1] + fw;
|
||||
}
|
||||
|
||||
/* compute n */
|
||||
z = ldexp(z, q0); /* actual value of z */
|
||||
z -= 8.0 * floor(z * 0.125); /* trim off integer >= 8 */
|
||||
n = (int)z; /*- cc 020130 -*/
|
||||
z -= (double)n;
|
||||
ih = 0;
|
||||
if (q0 > 0) { /* need iq[jz-1] to determine n */
|
||||
i = (iq[jz - 1] >> (24 - q0));
|
||||
n += i;
|
||||
iq[jz - 1] -= i << (24 - q0);
|
||||
ih = iq[jz - 1] >> (23 - q0);
|
||||
} else if (q0 == 0)
|
||||
ih = iq[jz - 1] >> 23;
|
||||
else if (z >= 0.5)
|
||||
ih = 2;
|
||||
|
||||
if (ih > 0) { /* q > 0.5 */
|
||||
n += 1;
|
||||
carry = 0;
|
||||
for (i = 0; i < jz; i++) { /* compute 1-q */
|
||||
j = iq[i];
|
||||
if (carry == 0) {
|
||||
if (j != 0) {
|
||||
carry = 1;
|
||||
iq[i] = 0x1000000 - j;
|
||||
}
|
||||
} else
|
||||
iq[i] = 0xffffff - j;
|
||||
}
|
||||
if (q0 > 0) { /* rare case: chance is 1 in 12 */
|
||||
switch (q0) {
|
||||
case 1:
|
||||
iq[jz - 1] &= 0x7fffff;
|
||||
break;
|
||||
case 2:
|
||||
iq[jz - 1] &= 0x3fffff;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (ih == 2) {
|
||||
z = one - z;
|
||||
if (carry != 0)
|
||||
z -= ldexp(one, q0);
|
||||
}
|
||||
}
|
||||
|
||||
/* check if recomputation is needed */
|
||||
if (z == zero) {
|
||||
j = 0;
|
||||
for (i = jz - 1; i >= jk; i--)
|
||||
j |= iq[i];
|
||||
if (j == 0) { /* need recomputation */
|
||||
for (k = 1; iq[jk - k] == 0; k++)
|
||||
; /* k = no. of terms needed */
|
||||
|
||||
for (i = jz + 1; i <= jz + k; i++) { /* add q[jz+1] to q[jz+k] */
|
||||
f[jx + i] = (double)ipio2[jv + i];
|
||||
for (j = 0, fw = 0.0; j <= jx; j++)
|
||||
fw += x[j] * f[jx + i - j];
|
||||
q[i] = fw;
|
||||
}
|
||||
jz += k;
|
||||
goto recompute;
|
||||
}
|
||||
}
|
||||
|
||||
/* chop off zero terms */
|
||||
if (z == 0.0) {
|
||||
jz -= 1;
|
||||
q0 -= 24;
|
||||
while (iq[jz] == 0) {
|
||||
jz--;
|
||||
q0 -= 24;
|
||||
}
|
||||
} else { /* break z into 24-bit if necessary */
|
||||
z = ldexp(z, -q0);
|
||||
if (z >= two24) {
|
||||
fw = (double)((int)(twon24 * z)); /*- cc 020130 -*/
|
||||
iq[jz] = (int)(z - two24 * fw); /*- cc 020130 -*/
|
||||
jz += 1;
|
||||
q0 += 24;
|
||||
iq[jz] = (int)fw; /*- cc 020130 -*/
|
||||
} else
|
||||
iq[jz] = (int)z; /*- cc 020130 -*/
|
||||
}
|
||||
|
||||
/* convert integer "bit" chunk to floating-point value */
|
||||
fw = ldexp(one, q0);
|
||||
for (i = jz; i >= 0; i--) {
|
||||
q[i] = fw * (double)iq[i];
|
||||
fw *= twon24;
|
||||
}
|
||||
|
||||
/* compute PIo2[0,...,jp]*q[jz,...,0] */
|
||||
for (i = jz; i >= 0; i--) {
|
||||
for (fw = 0.0, k = 0; k <= jp && k <= jz - i; k++)
|
||||
fw += PIo2[k] * q[i + k];
|
||||
fq[jz - i] = fw;
|
||||
}
|
||||
|
||||
/* compress fq[] into y[] */
|
||||
switch (prec) {
|
||||
case 0:
|
||||
fw = 0.0;
|
||||
for (i = jz; i >= 0; i--)
|
||||
fw += fq[i];
|
||||
y[0] = (ih == 0) ? fw : -fw;
|
||||
break;
|
||||
case 1:
|
||||
case 2:
|
||||
fw = 0.0;
|
||||
for (i = jz; i >= 0; i--)
|
||||
fw += fq[i];
|
||||
y[0] = (ih == 0) ? fw : -fw;
|
||||
fw = fq[0] - fw;
|
||||
for (i = 1; i <= jz; i++)
|
||||
fw += fq[i];
|
||||
y[1] = (ih == 0) ? fw : -fw;
|
||||
break;
|
||||
case 3: /* painful */
|
||||
for (i = jz; i > 0; i--) {
|
||||
fw = fq[i - 1] + fq[i];
|
||||
fq[i] += fq[i - 1] - fw;
|
||||
fq[i - 1] = fw;
|
||||
}
|
||||
for (i = jz; i > 1; i--) {
|
||||
fw = fq[i - 1] + fq[i];
|
||||
fq[i] += fq[i - 1] - fw;
|
||||
fq[i - 1] = fw;
|
||||
}
|
||||
for (fw = 0.0, i = jz; i >= 2; i--)
|
||||
fw += fq[i];
|
||||
if (ih == 0) {
|
||||
y[0] = fq[0];
|
||||
y[1] = fq[1];
|
||||
y[2] = fw;
|
||||
} else {
|
||||
y[0] = -fq[0];
|
||||
y[1] = -fq[1];
|
||||
y[2] = -fw;
|
||||
}
|
||||
}
|
||||
return n & 7;
|
||||
}
|
||||
@@ -0,0 +1,79 @@
|
||||
/* @(#)k_sin.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/* __kernel_sin( x, y, iy)
|
||||
* kernel sin function on [-pi/4, pi/4], pi/4 ~ 0.7854
|
||||
* Input x is assumed to be bounded by ~pi/4 in magnitude.
|
||||
* Input y is the tail of x.
|
||||
* Input iy indicates whether y is 0. (if iy=0, y assume to be 0).
|
||||
*
|
||||
* Algorithm
|
||||
* 1. Since sin(-x) = -sin(x), we need only to consider positive x.
|
||||
* 2. if x < 2^-27 (hx<0x3e400000 0), return x with inexact if x!=0.
|
||||
* 3. sin(x) is approximated by a polynomial of degree 13 on
|
||||
* [0,pi/4]
|
||||
* 3 13
|
||||
* sin(x) ~ x + S1*x + ... + S6*x
|
||||
* where
|
||||
*
|
||||
* |sin(x) 2 4 6 8 10 12 | -58
|
||||
* |----- - (1+S1*x +S2*x +S3*x +S4*x +S5*x +S6*x )| <= 2
|
||||
* | x |
|
||||
*
|
||||
* 4. sin(x+y) = sin(x) + sin'(x')*y
|
||||
* ~ sin(x) + (1-x*x/2)*y
|
||||
* For better accuracy, let
|
||||
* 3 2 2 2 2
|
||||
* r = x *(S2+x *(S3+x *(S4+x *(S5+x *S6))))
|
||||
* then 3 2
|
||||
* sin(x) = x + (S1*x + (x *(r-y/2)+y))
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double
|
||||
#else
|
||||
static double
|
||||
#endif
|
||||
half
|
||||
= 5.00000000000000000000e-01, /* 0x3FE00000, 0x00000000 */
|
||||
S1 = -1.66666666666666324348e-01, /* 0xBFC55555, 0x55555549 */
|
||||
S2 = 8.33333333332248946124e-03, /* 0x3F811111, 0x1110F8A6 */
|
||||
S3 = -1.98412698298579493134e-04, /* 0xBF2A01A0, 0x19C161D5 */
|
||||
S4 = 2.75573137070700676789e-06, /* 0x3EC71DE3, 0x57B1FE7D */
|
||||
S5 = -2.50507602534068634195e-08, /* 0xBE5AE5E6, 0x8A2B9CEB */
|
||||
S6 = 1.58969099521155010221e-10; /* 0x3DE5D93A, 0x5ACFD57C */
|
||||
|
||||
#ifdef __STDC__
|
||||
double __kernel_sin(double x, double y, int iy)
|
||||
#else
|
||||
double __kernel_sin(x, y, iy) double x, y;
|
||||
int iy; /* iy=0 if y is zero */
|
||||
#endif
|
||||
{
|
||||
double z, r, v;
|
||||
int ix;
|
||||
ix = __HI(x) & 0x7fffffff; /* high word of x */
|
||||
if (ix < 0x3e400000) /* |x| < 2**-27 */
|
||||
{
|
||||
if ((int)x == 0)
|
||||
return x;
|
||||
} /* generate inexact */
|
||||
z = x * x;
|
||||
v = z * x;
|
||||
r = S2 + z * (S3 + z * (S4 + z * (S5 + z * S6)));
|
||||
if (iy == 0)
|
||||
return x + v * (S1 + z * r);
|
||||
else
|
||||
return x - ((z * (half * y - v * r) - y) - v * S1);
|
||||
}
|
||||
@@ -0,0 +1,180 @@
|
||||
//===========================================================================
|
||||
//
|
||||
// k_tan.c
|
||||
//
|
||||
// Part of the standard mathematical function library
|
||||
//
|
||||
//===========================================================================
|
||||
//####ECOSGPLCOPYRIGHTBEGIN####
|
||||
// -------------------------------------------
|
||||
// This file is part of eCos, the Embedded Configurable Operating System.
|
||||
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
|
||||
//
|
||||
// eCos is free software; you can redistribute it and/or modify it under
|
||||
// the terms of the GNU General Public License as published by the Free
|
||||
// Software Foundation; either version 2 or (at your option) any later version.
|
||||
//
|
||||
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
|
||||
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
// for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License along
|
||||
// with eCos; if not, write to the Free Software Foundation, Inc.,
|
||||
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
||||
//
|
||||
// As a special exception, if other files instantiate templates or use macros
|
||||
// or inline functions from this file, or you compile this file and link it
|
||||
// with other works to produce a work based on this file, this file does not
|
||||
// by itself cause the resulting work to be covered by the GNU General Public
|
||||
// License. However the source code for this file must still be made available
|
||||
// in accordance with section (3) of the GNU General Public License.
|
||||
//
|
||||
// This exception does not invalidate any other reasons why a work based on
|
||||
// this file might be covered by the GNU General Public License.
|
||||
//
|
||||
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
|
||||
// at http://sources.redhat.com/ecos/ecos-license/
|
||||
// -------------------------------------------
|
||||
//####ECOSGPLCOPYRIGHTEND####
|
||||
//===========================================================================
|
||||
//#####DESCRIPTIONBEGIN####
|
||||
//
|
||||
// Author(s): jlarmour
|
||||
// Contributors: jlarmour
|
||||
// Date: 1998-02-13
|
||||
// Purpose:
|
||||
// Description:
|
||||
// Usage:
|
||||
//
|
||||
//####DESCRIPTIONEND####
|
||||
//
|
||||
//===========================================================================
|
||||
|
||||
// Derived from code with the following copyright
|
||||
|
||||
/* @(#)k_tan.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/* __kernel_tan( x, y, k )
|
||||
* kernel tan function on [-pi/4, pi/4], pi/4 ~ 0.7854
|
||||
* Input x is assumed to be bounded by ~pi/4 in magnitude.
|
||||
* Input y is the tail of x.
|
||||
* Input k indicates whether tan (if k=1) or
|
||||
* -1/tan (if k= -1) is returned.
|
||||
*
|
||||
* Algorithm
|
||||
* 1. Since tan(-x) = -tan(x), we need only to consider positive x.
|
||||
* 2. if x < 2^-28 (hx<0x3e300000 0), return x with inexact if x!=0.
|
||||
* 3. tan(x) is approximated by a odd polynomial of degree 27 on
|
||||
* [0,0.67434]
|
||||
* 3 27
|
||||
* tan(x) ~ x + T1*x + ... + T13*x
|
||||
* where
|
||||
*
|
||||
* |tan(x) 2 4 26 | -59.2
|
||||
* |----- - (1+T1*x +T2*x +.... +T13*x )| <= 2
|
||||
* | x |
|
||||
*
|
||||
* Note: tan(x+y) = tan(x) + tan'(x)*y
|
||||
* ~ tan(x) + (1+x*x)*y
|
||||
* Therefore, for better accuracy in computing tan(x+y), let
|
||||
* 3 2 2 2 2
|
||||
* r = x *(T2+x *(T3+x *(...+x *(T12+x *T13))))
|
||||
* then
|
||||
* 3 2
|
||||
* tan(x+y) = x + (T1*x + (x *(r+y)+y))
|
||||
*
|
||||
* 4. For x in [0.67434,pi/4], let y = pi/4 - x, then
|
||||
* tan(x) = tan(pi/4-y) = (1-tan(y))/(1+tan(y))
|
||||
* = 1 - 2*(tan(y) - (tan(y)^2)/(1+tan(y)))
|
||||
*/
|
||||
|
||||
#include "math.h"
|
||||
static const double one = 1.00000000000000000000e+00, /* 0x3FF00000, 0x00000000 */
|
||||
pio4 = 7.85398163397448278999e-01, /* 0x3FE921FB, 0x54442D18 */
|
||||
pio4lo = 3.06161699786838301793e-17, /* 0x3C81A626, 0x33145C07 */
|
||||
T[] = {
|
||||
3.33333333333334091986e-01, /* 0x3FD55555, 0x55555563 */
|
||||
1.33333333333201242699e-01, /* 0x3FC11111, 0x1110FE7A */
|
||||
5.39682539762260521377e-02, /* 0x3FABA1BA, 0x1BB341FE */
|
||||
2.18694882948595424599e-02, /* 0x3F9664F4, 0x8406D637 */
|
||||
8.86323982359930005737e-03, /* 0x3F8226E3, 0xE96E8493 */
|
||||
3.59207910759131235356e-03, /* 0x3F6D6D22, 0xC9560328 */
|
||||
1.45620945432529025516e-03, /* 0x3F57DBC8, 0xFEE08315 */
|
||||
5.88041240820264096874e-04, /* 0x3F4344D8, 0xF2F26501 */
|
||||
2.46463134818469906812e-04, /* 0x3F3026F7, 0x1A8D1068 */
|
||||
7.81794442939557092300e-05, /* 0x3F147E88, 0xA03792A6 */
|
||||
7.14072491382608190305e-05, /* 0x3F12B80F, 0x32F0A7E9 */
|
||||
-1.85586374855275456654e-05, /* 0xBEF375CB, 0xDB605373 */
|
||||
2.59073051863633712884e-05, /* 0x3EFB2A70, 0x74BF7AD4 */
|
||||
};
|
||||
|
||||
double __kernel_tan(double x, double y, int iy)
|
||||
{
|
||||
double z, r, v, w, s;
|
||||
int ix, hx;
|
||||
hx = __HI(x); /* high word of x */
|
||||
ix = hx & 0x7fffffff; /* high word of |x| */
|
||||
if (ix < 0x3e300000) /* x < 2**-28 */
|
||||
{
|
||||
if ((int)x == 0) { /* generate inexact */
|
||||
if (((ix | __LO(x)) | (iy + 1)) == 0) {
|
||||
double ret = fabs(x);
|
||||
return one / ret;
|
||||
} else
|
||||
return (iy == 1) ? x : -one / x;
|
||||
}
|
||||
}
|
||||
if (ix >= 0x3FE59428) { /* |x|>=0.6744 */
|
||||
if (hx < 0) {
|
||||
x = -x;
|
||||
y = -y;
|
||||
}
|
||||
z = pio4 - x;
|
||||
w = pio4lo - y;
|
||||
x = z + w;
|
||||
y = 0.0;
|
||||
}
|
||||
z = x * x;
|
||||
w = z * z;
|
||||
/* Break x^5*(T[1]+x^2*T[2]+...) into
|
||||
* x^5(T[1]+x^4*T[3]+...+x^20*T[11]) +
|
||||
* x^5(x^2*(T[2]+x^4*T[4]+...+x^22*[T12]))
|
||||
*/
|
||||
r = T[1] + w * (T[3] + w * (T[5] + w * (T[7] + w * (T[9] + w * T[11]))));
|
||||
v = z * (T[2] + w * (T[4] + w * (T[6] + w * (T[8] + w * (T[10] + w * T[12])))));
|
||||
s = z * x;
|
||||
r = y + z * (s * (r + v) + y);
|
||||
r += T[0] * s;
|
||||
w = x + r;
|
||||
if (ix >= 0x3FE59428) {
|
||||
v = (double)iy;
|
||||
return (double)(1 - ((hx >> 30) & 2)) * (v - 2.0 * (x - (w * w / (w + v) - r)));
|
||||
}
|
||||
if (iy == 1)
|
||||
return w;
|
||||
else { /* if allow error up to 2 ulp,
|
||||
simply return -1.0/(x+r) here */
|
||||
/* compute -1.0/(x+r) accurately */
|
||||
double a, t;
|
||||
z = w;
|
||||
__LO(z) = 0;
|
||||
v = r - (z - x); /* z+v = r+x */
|
||||
t = a = -1.0 / w; /* a = -1.0/w */
|
||||
__LO(t) = 0;
|
||||
s = 1.0 + t * z;
|
||||
return t + a * (s + t * v);
|
||||
}
|
||||
}
|
||||
|
||||
// EOF k_tan.c
|
||||
+142
@@ -0,0 +1,142 @@
|
||||
/* @(#)s_atan.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*
|
||||
*/
|
||||
|
||||
/* atan(x)
|
||||
* Method
|
||||
* 1. Reduce x to positive by atan(x) = -atan(-x).
|
||||
* 2. According to the integer k=4t+0.25 chopped, t=x, the argument
|
||||
* is further reduced to one of the following intervals and the
|
||||
* arctangent of t is evaluated by the corresponding formula:
|
||||
*
|
||||
* [0,7/16] atan(x) = t-t^3*(a1+t^2*(a2+...(a10+t^2*a11)...)
|
||||
* [7/16,11/16] atan(x) = atan(1/2) + atan( (t-0.5)/(1+t/2) )
|
||||
* [11/16.19/16] atan(x) = atan( 1 ) + atan( (t-1)/(1+t) )
|
||||
* [19/16,39/16] atan(x) = atan(3/2) + atan( (t-1.5)/(1+1.5t) )
|
||||
* [39/16,INF] atan(x) = atan(INF) + atan( -1/t )
|
||||
*
|
||||
* Constants:
|
||||
* The hexadecimal values are the intended ones for the following
|
||||
* constants. The decimal values may be used, provided that the
|
||||
* compiler will convert from decimal to binary accurately enough
|
||||
* to produce the hexadecimal values shown.
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double atanhi[] = {
|
||||
#else
|
||||
static double atanhi[] = {
|
||||
#endif
|
||||
4.63647609000806093515e-01, /* atan(0.5)hi 0x3FDDAC67, 0x0561BB4F */
|
||||
7.85398163397448278999e-01, /* atan(1.0)hi 0x3FE921FB, 0x54442D18 */
|
||||
9.82793723247329054082e-01, /* atan(1.5)hi 0x3FEF730B, 0xD281F69B */
|
||||
1.57079632679489655800e+00, /* atan(inf)hi 0x3FF921FB, 0x54442D18 */
|
||||
};
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double atanlo[] = {
|
||||
#else
|
||||
static double atanlo[] = {
|
||||
#endif
|
||||
2.26987774529616870924e-17, /* atan(0.5)lo 0x3C7A2B7F, 0x222F65E2 */
|
||||
3.06161699786838301793e-17, /* atan(1.0)lo 0x3C81A626, 0x33145C07 */
|
||||
1.39033110312309984516e-17, /* atan(1.5)lo 0x3C700788, 0x7AF0CBBD */
|
||||
6.12323399573676603587e-17, /* atan(inf)lo 0x3C91A626, 0x33145C07 */
|
||||
};
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double aT[] = {
|
||||
#else
|
||||
static double aT[] = {
|
||||
#endif
|
||||
3.33333333333329318027e-01, /* 0x3FD55555, 0x5555550D */
|
||||
-1.99999999998764832476e-01, /* 0xBFC99999, 0x9998EBC4 */
|
||||
1.42857142725034663711e-01, /* 0x3FC24924, 0x920083FF */
|
||||
-1.11111104054623557880e-01, /* 0xBFBC71C6, 0xFE231671 */
|
||||
9.09088713343650656196e-02, /* 0x3FB745CD, 0xC54C206E */
|
||||
-7.69187620504482999495e-02, /* 0xBFB3B0F2, 0xAF749A6D */
|
||||
6.66107313738753120669e-02, /* 0x3FB10D66, 0xA0D03D51 */
|
||||
-5.83357013379057348645e-02, /* 0xBFADDE2D, 0x52DEFD9A */
|
||||
4.97687799461593236017e-02, /* 0x3FA97B4B, 0x24760DEB */
|
||||
-3.65315727442169155270e-02, /* 0xBFA2B444, 0x2C6A6C2F */
|
||||
1.62858201153657823623e-02, /* 0x3F90AD3A, 0xE322DA11 */
|
||||
};
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double
|
||||
#else
|
||||
static double
|
||||
#endif
|
||||
one
|
||||
= 1.0,
|
||||
huge = 1.0e300;
|
||||
|
||||
#ifdef __STDC__
|
||||
double atan(double x)
|
||||
#else
|
||||
double atan(x) double x;
|
||||
#endif
|
||||
{
|
||||
double w, s1, s2, z;
|
||||
int ix, hx, id;
|
||||
|
||||
hx = __HI(x);
|
||||
ix = hx & 0x7fffffff;
|
||||
if (ix >= 0x44100000) { /* if |x| >= 2^66 */
|
||||
if (ix > 0x7ff00000 || (ix == 0x7ff00000 && (__LO(x) != 0)))
|
||||
return x + x; /* NaN */
|
||||
if (hx > 0)
|
||||
return atanhi[3] + atanlo[3];
|
||||
else
|
||||
return -atanhi[3] - atanlo[3];
|
||||
}
|
||||
if (ix < 0x3fdc0000) { /* |x| < 0.4375 */
|
||||
if (ix < 0x3e200000) { /* |x| < 2^-29 */
|
||||
if (huge + x > one)
|
||||
return x; /* raise inexact */
|
||||
}
|
||||
id = -1;
|
||||
} else {
|
||||
x = __fabs(x);
|
||||
if (ix < 0x3ff30000) { /* |x| < 1.1875 */
|
||||
if (ix < 0x3fe60000) { /* 7/16 <=|x|<11/16 */
|
||||
id = 0;
|
||||
x = (2.0 * x - one) / (2.0 + x);
|
||||
} else { /* 11/16<=|x|< 19/16 */
|
||||
id = 1;
|
||||
x = (x - one) / (x + one);
|
||||
}
|
||||
} else {
|
||||
if (ix < 0x40038000) { /* |x| < 2.4375 */
|
||||
id = 2;
|
||||
x = (x - 1.5) / (one + 1.5 * x);
|
||||
} else { /* 2.4375 <= |x| < 2^66 */
|
||||
id = 3;
|
||||
x = -1.0 / x;
|
||||
}
|
||||
}
|
||||
}
|
||||
/* end of argument reduction */
|
||||
z = x * x;
|
||||
w = z * z;
|
||||
/* break sum from i=0 to 10 aT[i]z**(i+1) into odd and even poly */
|
||||
s1 = z * (aT[0] + w * (aT[2] + w * (aT[4] + w * (aT[6] + w * (aT[8] + w * aT[10])))));
|
||||
s2 = w * (aT[1] + w * (aT[3] + w * (aT[5] + w * (aT[7] + w * aT[9]))));
|
||||
if (id < 0)
|
||||
return x - x * (s1 + s2);
|
||||
else {
|
||||
z = atanhi[id] - ((x * (s1 + s2) - atanlo[id]) - x);
|
||||
return (hx < 0) ? -z : z;
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,89 @@
|
||||
/* @(#)s_ceil.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
* ceil(x)
|
||||
* Return x rounded toward -inf to integral value
|
||||
* Method:
|
||||
* Bit twiddling.
|
||||
* Exception:
|
||||
* Inexact flag raised if x not equal to ceil(x).
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double huge = 1.0e300;
|
||||
#else
|
||||
static double huge = 1.0e300;
|
||||
#endif
|
||||
|
||||
#ifdef __STDC__
|
||||
double ceil(double x)
|
||||
#else
|
||||
double ceil(x) double x;
|
||||
#endif
|
||||
{
|
||||
int i0, i1, j0;
|
||||
unsigned i, j;
|
||||
i0 = __HI(x);
|
||||
i1 = __LO(x);
|
||||
j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;
|
||||
if (j0 < 20) {
|
||||
if (j0 < 0) { /* raise inexact if x != 0 */
|
||||
if (huge + x > 0.0) { /* return 0*sign(x) if |x|<1 */
|
||||
if (i0 < 0) {
|
||||
i0 = 0x80000000;
|
||||
i1 = 0;
|
||||
} else if ((i0 | i1) != 0) {
|
||||
i0 = 0x3ff00000;
|
||||
i1 = 0;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
i = (0x000fffff) >> j0;
|
||||
if (((i0 & i) | i1) == 0)
|
||||
return x; /* x is integral */
|
||||
if (huge + x > 0.0) { /* raise inexact flag */
|
||||
if (i0 > 0)
|
||||
i0 += (0x00100000) >> j0;
|
||||
i0 &= (~i);
|
||||
i1 = 0;
|
||||
}
|
||||
}
|
||||
} else if (j0 > 51) {
|
||||
if (j0 == 0x400)
|
||||
return x + x; /* inf or NaN */
|
||||
else
|
||||
return x; /* x is integral */
|
||||
} else {
|
||||
i = ((unsigned)(0xffffffff)) >> (j0 - 20);
|
||||
if ((i1 & i) == 0)
|
||||
return x; /* x is integral */
|
||||
if (huge + x > 0.0) { /* raise inexact flag */
|
||||
if (i0 > 0) {
|
||||
if (j0 == 20)
|
||||
i0 += 1;
|
||||
else {
|
||||
j = i1 + (1 << (52 - j0));
|
||||
if (j < i1)
|
||||
i0 += 1; /* got a carry */
|
||||
i1 = j;
|
||||
}
|
||||
}
|
||||
i1 &= (~i);
|
||||
}
|
||||
}
|
||||
__HI(x) = i0;
|
||||
__LO(x) = i1;
|
||||
return x;
|
||||
}
|
||||
+29
@@ -0,0 +1,29 @@
|
||||
/* @(#)s_copysign.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
* copysign(double x, double y)
|
||||
* copysign(x,y) returns a value with the magnitude of x and
|
||||
* with the sign bit of y.
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
double copysign(double x, double y)
|
||||
#else
|
||||
double copysign(x, y) double x, y;
|
||||
#endif
|
||||
{
|
||||
__HI(x) = (__HI(x) & 0x7fffffff) | (__HI(y) & 0x80000000);
|
||||
return x;
|
||||
}
|
||||
@@ -0,0 +1,81 @@
|
||||
/* @(#)s_cos.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/* cos(x)
|
||||
* Return cosine function of x.
|
||||
*
|
||||
* kernel function:
|
||||
* __kernel_sin ... sine function on [-pi/4,pi/4]
|
||||
* __kernel_cos ... cosine function on [-pi/4,pi/4]
|
||||
* __ieee754_rem_pio2 ... argument reduction routine
|
||||
*
|
||||
* Method.
|
||||
* Let S,C and T denote the sin, cos and tan respectively on
|
||||
* [-PI/4, +PI/4]. Reduce the argument x to y1+y2 = x-k*pi/2
|
||||
* in [-pi/4 , +pi/4], and let n = k mod 4.
|
||||
* We have
|
||||
*
|
||||
* n sin(x) cos(x) tan(x)
|
||||
* ----------------------------------------------------------
|
||||
* 0 S C T
|
||||
* 1 C -S -1/T
|
||||
* 2 -S -C T
|
||||
* 3 -C S -1/T
|
||||
* ----------------------------------------------------------
|
||||
*
|
||||
* Special cases:
|
||||
* Let trig be any of sin, cos, or tan.
|
||||
* trig(+-INF) is NaN, with signals;
|
||||
* trig(NaN) is that NaN;
|
||||
*
|
||||
* Accuracy:
|
||||
* TRIG(x) returns trig(x) nearly rounded
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
double cos(double x)
|
||||
#else
|
||||
double cos(x) double x;
|
||||
#endif
|
||||
{
|
||||
double y[2], z = 0.0;
|
||||
int n, ix;
|
||||
|
||||
/* High word of x. */
|
||||
ix = __HI(x);
|
||||
|
||||
/* |x| ~< pi/4 */
|
||||
ix &= 0x7fffffff;
|
||||
if (ix <= 0x3fe921fb)
|
||||
return __kernel_cos(x, z);
|
||||
|
||||
/* cos(Inf or NaN) is NaN */
|
||||
else if (ix >= 0x7ff00000)
|
||||
return x - x;
|
||||
|
||||
/* argument reduction needed */
|
||||
else {
|
||||
n = __ieee754_rem_pio2(x, y);
|
||||
switch (n & 3) {
|
||||
case 0:
|
||||
return __kernel_cos(y[0], y[1]);
|
||||
case 1:
|
||||
return -__kernel_sin(y[0], y[1], 1);
|
||||
case 2:
|
||||
return -__kernel_cos(y[0], y[1]);
|
||||
default:
|
||||
return __kernel_sin(y[0], y[1], 1);
|
||||
}
|
||||
}
|
||||
}
|
||||
+88
@@ -0,0 +1,88 @@
|
||||
/* @(#)s_floor.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
* floor(x)
|
||||
* Return x rounded toward -inf to integral value
|
||||
* Method:
|
||||
* Bit twiddling.
|
||||
* Exception:
|
||||
* Inexact flag raised if x not equal to floor(x).
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double huge = 1.0e300;
|
||||
#else
|
||||
static double huge = 1.0e300;
|
||||
#endif
|
||||
|
||||
#ifdef __STDC__
|
||||
double floor(double x)
|
||||
#else
|
||||
double floor(x) double x;
|
||||
#endif
|
||||
{
|
||||
int i0, i1, j0;
|
||||
unsigned i, j;
|
||||
i0 = __HI(x);
|
||||
i1 = __LO(x);
|
||||
j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;
|
||||
if (j0 < 20) {
|
||||
if (j0 < 0) { /* raise inexact if x != 0 */
|
||||
if (huge + x > 0.0) { /* return 0*sign(x) if |x|<1 */
|
||||
if (i0 >= 0) {
|
||||
i0 = i1 = 0;
|
||||
} else if (((i0 & 0x7fffffff) | i1) != 0) {
|
||||
i0 = 0xbff00000;
|
||||
i1 = 0;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
i = (0x000fffff) >> j0;
|
||||
if (((i0 & i) | i1) == 0)
|
||||
return x; /* x is integral */
|
||||
if (huge + x > 0.0) { /* raise inexact flag */
|
||||
if (i0 < 0)
|
||||
i0 += (0x00100000) >> j0;
|
||||
i0 &= (~i);
|
||||
i1 = 0;
|
||||
}
|
||||
}
|
||||
} else if (j0 > 51) {
|
||||
if (j0 == 0x400)
|
||||
return x + x; /* inf or NaN */
|
||||
else
|
||||
return x; /* x is integral */
|
||||
} else {
|
||||
i = ((unsigned)(0xffffffff)) >> (j0 - 20);
|
||||
if ((i1 & i) == 0)
|
||||
return x; /* x is integral */
|
||||
if (huge + x > 0.0) { /* raise inexact flag */
|
||||
if (i0 < 0) {
|
||||
if (j0 == 20)
|
||||
i0 += 1;
|
||||
else {
|
||||
j = i1 + (1 << (52 - j0));
|
||||
if (j < i1)
|
||||
i0 += 1; /* got a carry */
|
||||
i1 = j;
|
||||
}
|
||||
}
|
||||
i1 &= (~i);
|
||||
}
|
||||
}
|
||||
__HI(x) = i0;
|
||||
__LO(x) = i1;
|
||||
return x;
|
||||
}
|
||||
+56
@@ -0,0 +1,56 @@
|
||||
/* @(#)s_frexp.c 1.4 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
* for non-zero x
|
||||
* x = frexp(arg,&exp);
|
||||
* return a double fp quantity x such that 0.5 <= |x| <1.0
|
||||
* and the corresponding binary exponent "exp". That is
|
||||
* arg = x*2^exp.
|
||||
* If arg is inf, 0.0, or NaN, then frexp(arg,&exp) returns arg
|
||||
* with *exp=0.
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double
|
||||
#else
|
||||
static double
|
||||
#endif
|
||||
two54 = 1.80143985094819840000e+16; /* 0x43500000, 0x00000000 */
|
||||
|
||||
#ifdef __STDC__
|
||||
double frexp(double x, int* eptr)
|
||||
#else
|
||||
double frexp(x, eptr) double x;
|
||||
int* eptr;
|
||||
#endif
|
||||
{
|
||||
int hx, ix, lx;
|
||||
hx = __HI(x);
|
||||
ix = 0x7fffffff & hx;
|
||||
lx = __LO(x);
|
||||
*eptr = 0;
|
||||
if (ix >= 0x7ff00000 || ((ix | lx) == 0))
|
||||
return x; /* 0,inf,nan */
|
||||
if (ix < 0x00100000) { /* subnormal */
|
||||
x *= two54;
|
||||
hx = __HI(x);
|
||||
ix = hx & 0x7fffffff;
|
||||
*eptr = -54;
|
||||
}
|
||||
*eptr += (ix >> 20) - 1022;
|
||||
hx = (hx & 0x800fffff) | 0x3fe00000;
|
||||
__HI(x) = hx;
|
||||
return x;
|
||||
}
|
||||
+58
@@ -0,0 +1,58 @@
|
||||
/* @(#)s_ldexp.c 1.2 95/01/04 */
|
||||
/* $Id: s_ldexp.c,v 1.3.14.1 2002/01/31 15:24:14 ceciliar Exp $ */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
#include "math.h" /* for isfinite macro */
|
||||
static const double
|
||||
|
||||
two54
|
||||
= 1.80143985094819840000e+16, /* 0x43500000, 0x00000000 */
|
||||
twom54 = 5.55111512312578270212e-17, /* 0x3C900000, 0x00000000 */
|
||||
big = 1.0e+300, tiny = 1.0e-300;
|
||||
|
||||
double ldexp(double x, int n)
|
||||
{
|
||||
long k, hx, lx; /*- cc 020130 -*/
|
||||
if (!isfinite(x) || x == 0.0)
|
||||
return x;
|
||||
|
||||
hx = __HI(x);
|
||||
lx = __LO(x);
|
||||
k = (hx & 0x7ff00000) >> 20; /* extract exponent */
|
||||
if (k == 0) { /* 0 or subnormal x */
|
||||
if ((lx | (hx & 0x7fffffff)) == 0)
|
||||
return x; /* +-0 */
|
||||
x *= two54;
|
||||
hx = __HI(x);
|
||||
k = ((hx & 0x7ff00000) >> 20) - 54;
|
||||
if (n < -50000)
|
||||
return tiny * x; /*underflow*/
|
||||
}
|
||||
if (k == 0x7ff)
|
||||
return x + x; /* NaN or Inf */
|
||||
k = k + n;
|
||||
if (k > 0x7fe)
|
||||
return big * copysign(big, x); /* overflow */
|
||||
if (k > 0) /* normal result */
|
||||
{
|
||||
__HI(x) = (hx & 0x800fffff) | (k << 20);
|
||||
return x;
|
||||
}
|
||||
if (k <= -54)
|
||||
if (n > 50000) /* in case integer overflow in n+k */
|
||||
return big * copysign(big, x); /*overflow*/
|
||||
else
|
||||
return tiny * copysign(tiny, x); /*underflow*/
|
||||
k += 54; /* subnormal result */
|
||||
__HI(x) = (hx & 0x800fffff) | (k << 20);
|
||||
return x * twom54;
|
||||
}
|
||||
@@ -0,0 +1,78 @@
|
||||
/* @(#)s_modf.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
* modf(double x, double *iptr)
|
||||
* return fraction part of x, and return x's integral part in *iptr.
|
||||
* Method:
|
||||
* Bit twiddling.
|
||||
*
|
||||
* Exception:
|
||||
* No exception.
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double one = 1.0;
|
||||
#else
|
||||
static double one = 1.0;
|
||||
#endif
|
||||
|
||||
#ifdef __STDC__
|
||||
double modf(double x, double* iptr)
|
||||
#else
|
||||
double modf(x, iptr) double x, *iptr;
|
||||
#endif
|
||||
{
|
||||
int i0, i1, j0;
|
||||
unsigned i;
|
||||
i0 = __HI(x); /* high x */
|
||||
i1 = __LO(x); /* low x */
|
||||
j0 = ((i0 >> 20) & 0x7ff) - 0x3ff; /* exponent of x */
|
||||
if (j0 < 20) { /* integer part in high x */
|
||||
if (j0 < 0) { /* |x|<1 */
|
||||
__HIp(iptr) = i0 & 0x80000000;
|
||||
__LOp(iptr) = 0; /* *iptr = +-0 */
|
||||
return x;
|
||||
} else {
|
||||
i = (0x000fffff) >> j0;
|
||||
if (((i0 & i) | i1) == 0) { /* x is integral */
|
||||
*iptr = x;
|
||||
__HI(x) &= 0x80000000;
|
||||
__LO(x) = 0; /* return +-0 */
|
||||
return x;
|
||||
} else {
|
||||
__HIp(iptr) = i0 & (~i);
|
||||
__LOp(iptr) = 0;
|
||||
return x - *iptr;
|
||||
}
|
||||
}
|
||||
} else if (j0 > 51) { /* no fraction part */
|
||||
*iptr = x * one;
|
||||
__HI(x) &= 0x80000000;
|
||||
__LO(x) = 0; /* return +-0 */
|
||||
return x;
|
||||
} else { /* fraction part in low x */
|
||||
i = ((unsigned)(0xffffffff)) >> (j0 - 20);
|
||||
if ((i1 & i) == 0) { /* x is integral */
|
||||
*iptr = x;
|
||||
__HI(x) &= 0x80000000;
|
||||
__LO(x) = 0; /* return +-0 */
|
||||
return x;
|
||||
} else {
|
||||
__HIp(iptr) = i0;
|
||||
__LOp(iptr) = i1 & (~i);
|
||||
return x - *iptr;
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,81 @@
|
||||
/* @(#)s_sin.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/* sin(x)
|
||||
* Return sine function of x.
|
||||
*
|
||||
* kernel function:
|
||||
* __kernel_sin ... sine function on [-pi/4,pi/4]
|
||||
* __kernel_cos ... cose function on [-pi/4,pi/4]
|
||||
* __ieee754_rem_pio2 ... argument reduction routine
|
||||
*
|
||||
* Method.
|
||||
* Let S,C and T denote the sin, cos and tan respectively on
|
||||
* [-PI/4, +PI/4]. Reduce the argument x to y1+y2 = x-k*pi/2
|
||||
* in [-pi/4 , +pi/4], and let n = k mod 4.
|
||||
* We have
|
||||
*
|
||||
* n sin(x) cos(x) tan(x)
|
||||
* ----------------------------------------------------------
|
||||
* 0 S C T
|
||||
* 1 C -S -1/T
|
||||
* 2 -S -C T
|
||||
* 3 -C S -1/T
|
||||
* ----------------------------------------------------------
|
||||
*
|
||||
* Special cases:
|
||||
* Let trig be any of sin, cos, or tan.
|
||||
* trig(+-INF) is NaN, with signals;
|
||||
* trig(NaN) is that NaN;
|
||||
*
|
||||
* Accuracy:
|
||||
* TRIG(x) returns trig(x) nearly rounded
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
double sin(double x)
|
||||
#else
|
||||
double sin(x) double x;
|
||||
#endif
|
||||
{
|
||||
double y[2], z = 0.0;
|
||||
int n, ix;
|
||||
|
||||
/* High word of x. */
|
||||
ix = __HI(x);
|
||||
|
||||
/* |x| ~< pi/4 */
|
||||
ix &= 0x7fffffff;
|
||||
if (ix <= 0x3fe921fb)
|
||||
return __kernel_sin(x, z, 0);
|
||||
|
||||
/* sin(Inf or NaN) is NaN */
|
||||
else if (ix >= 0x7ff00000)
|
||||
return x - x;
|
||||
|
||||
/* argument reduction needed */
|
||||
else {
|
||||
n = __ieee754_rem_pio2(x, y);
|
||||
switch (n & 3) {
|
||||
case 0:
|
||||
return __kernel_sin(y[0], y[1], 1);
|
||||
case 1:
|
||||
return __kernel_cos(y[0], y[1]);
|
||||
case 2:
|
||||
return -__kernel_sin(y[0], y[1], 1);
|
||||
default:
|
||||
return -__kernel_cos(y[0], y[1]);
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,72 @@
|
||||
/* @(#)s_tan.c 1.3 95/01/18 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/* tan(x)
|
||||
* Return tangent function of x.
|
||||
*
|
||||
* kernel function:
|
||||
* __kernel_tan ... tangent function on [-pi/4,pi/4]
|
||||
* __ieee754_rem_pio2 ... argument reduction routine
|
||||
*
|
||||
* Method.
|
||||
* Let S,C and T denote the sin, cos and tan respectively on
|
||||
* [-PI/4, +PI/4]. Reduce the argument x to y1+y2 = x-k*pi/2
|
||||
* in [-pi/4 , +pi/4], and let n = k mod 4.
|
||||
* We have
|
||||
*
|
||||
* n sin(x) cos(x) tan(x)
|
||||
* ----------------------------------------------------------
|
||||
* 0 S C T
|
||||
* 1 C -S -1/T
|
||||
* 2 -S -C T
|
||||
* 3 -C S -1/T
|
||||
* ----------------------------------------------------------
|
||||
*
|
||||
* Special cases:
|
||||
* Let trig be any of sin, cos, or tan.
|
||||
* trig(+-INF) is NaN, with signals;
|
||||
* trig(NaN) is that NaN;
|
||||
*
|
||||
* Accuracy:
|
||||
* TRIG(x) returns trig(x) nearly rounded
|
||||
*/
|
||||
|
||||
#include "fdlibm.h"
|
||||
|
||||
#ifdef __STDC__
|
||||
double tan(double x)
|
||||
#else
|
||||
double tan(x) double x;
|
||||
#endif
|
||||
{
|
||||
double y[2], z = 0.0;
|
||||
int n, ix;
|
||||
|
||||
/* High word of x. */
|
||||
ix = __HI(x);
|
||||
|
||||
/* |x| ~< pi/4 */
|
||||
ix &= 0x7fffffff;
|
||||
if (ix <= 0x3fe921fb)
|
||||
return __kernel_tan(x, z, 1);
|
||||
|
||||
/* tan(Inf or NaN) is NaN */
|
||||
else if (ix >= 0x7ff00000)
|
||||
return x - x; /* NaN */
|
||||
|
||||
/* argument reduction needed */
|
||||
else {
|
||||
n = __ieee754_rem_pio2(x, y);
|
||||
return __kernel_tan(y[0], y[1], 1 - ((n & 1) << 1)); /* 1 -- n even
|
||||
-1 -- n odd */
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,6 @@
|
||||
#include "fdlibm.h"
|
||||
|
||||
/* 8036C6E0-8036C700 367020 0020+00 0/0 2/2 3/3 .text acos */
|
||||
double acos(double x) {
|
||||
return __ieee754_acos(x);
|
||||
}
|
||||
@@ -0,0 +1,6 @@
|
||||
#include "fdlibm.h"
|
||||
|
||||
/* 8036C700-8036C720 367040 0020+00 0/0 2/2 0/0 .text asin */
|
||||
double asin(double x) {
|
||||
return __ieee754_asin(x);
|
||||
}
|
||||
@@ -0,0 +1,6 @@
|
||||
#include "fdlibm.h"
|
||||
|
||||
/* 8036C720-8036C740 367060 0020+00 0/0 6/6 0/0 .text atan2 */
|
||||
double atan2(double x, double y) {
|
||||
return __ieee754_atan2(x, y);
|
||||
}
|
||||
@@ -0,0 +1,6 @@
|
||||
#include "fdlibm.h"
|
||||
|
||||
/* 8036C740-8036C760 367080 0020+00 0/0 1/1 0/0 .text exp */
|
||||
double exp(double x) {
|
||||
return __ieee754_exp(x);
|
||||
}
|
||||
@@ -0,0 +1,6 @@
|
||||
#include "fdlibm.h"
|
||||
|
||||
/* 8036C760-8036C780 3670A0 0020+00 0/0 8/8 0/0 .text fmod */
|
||||
double fmod(double x, double y) {
|
||||
return __ieee754_fmod(x, y);
|
||||
}
|
||||
@@ -0,0 +1,6 @@
|
||||
#include "fdlibm.h"
|
||||
|
||||
/* 8036C780-8036C7A0 3670C0 0020+00 0/0 3/3 24/24 .text pow */
|
||||
double pow(double x, double y) {
|
||||
return __ieee754_pow(x, y);
|
||||
}
|
||||
@@ -0,0 +1,6 @@
|
||||
#include "fdlibm.h"
|
||||
|
||||
/* 8036CA54-8036CA74 367394 0020+00 0/0 8/8 1/1 .text sqrt */
|
||||
double sqrt(double x) {
|
||||
return __ieee754_sqrt(x);
|
||||
}
|
||||
@@ -0,0 +1,228 @@
|
||||
#ifndef FDLIBM_H
|
||||
#define FDLIBM_H
|
||||
|
||||
/* @(#)fdlibm.h 1.5 04/04/22 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 2004 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/* Sometimes it's necessary to define __LITTLE_ENDIAN explicitly
|
||||
but these catch some common cases. */
|
||||
|
||||
#if defined(i386) || defined(i486) || defined(intel) || defined(x86) || defined(i86pc) || \
|
||||
defined(__alpha) || defined(__osf__)
|
||||
#define __LITTLE_ENDIAN
|
||||
#endif
|
||||
|
||||
#ifdef __LITTLE_ENDIAN
|
||||
#define __HI(x) *(1 + (int*)&x)
|
||||
#define __LO(x) *(int*)&x
|
||||
#define __HIp(x) *(1 + (int*)x)
|
||||
#define __LOp(x) *(int*)x
|
||||
#else
|
||||
#define __HI(x) *(int*)&x
|
||||
#define __LO(x) *(1 + (int*)&x)
|
||||
#define __HIp(x) *(int*)x
|
||||
#define __LOp(x) *(1 + (int*)x)
|
||||
#endif
|
||||
|
||||
// TODO: should __STDC__ actually be defined?
|
||||
//#ifdef __STDC__
|
||||
#define __P(p) p
|
||||
//#else
|
||||
//#define __P(p) ()
|
||||
//#endif
|
||||
|
||||
/*
|
||||
* ANSI/POSIX
|
||||
*/
|
||||
|
||||
extern int signgam;
|
||||
|
||||
#define MAXFLOAT ((float)3.40282346638528860e+38)
|
||||
|
||||
enum fdversion { fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix };
|
||||
|
||||
#define _LIB_VERSION_TYPE enum fdversion
|
||||
#define _LIB_VERSION _fdlib_version
|
||||
|
||||
/* if global variable _LIB_VERSION is not desirable, one may
|
||||
* change the following to be a constant by:
|
||||
* #define _LIB_VERSION_TYPE const enum version
|
||||
* In that case, after one initializes the value _LIB_VERSION (see
|
||||
* s_lib_version.c) during compile time, it cannot be modified
|
||||
* in the middle of a program
|
||||
*/
|
||||
extern _LIB_VERSION_TYPE _LIB_VERSION;
|
||||
|
||||
#define _IEEE_ fdlibm_ieee
|
||||
#define _SVID_ fdlibm_svid
|
||||
#define _XOPEN_ fdlibm_xopen
|
||||
#define _POSIX_ fdlibm_posix
|
||||
|
||||
struct exception {
|
||||
int type;
|
||||
char* name;
|
||||
double arg1;
|
||||
double arg2;
|
||||
double retval;
|
||||
};
|
||||
|
||||
#define HUGE MAXFLOAT
|
||||
|
||||
/*
|
||||
* set X_TLOSS = pi*2**52, which is possibly defined in <values.h"
|
||||
* (one may replace the following line by "#include "values.h"")
|
||||
*/
|
||||
|
||||
#define X_TLOSS 1.41484755040568800000e+16
|
||||
|
||||
#define DOMAIN 1
|
||||
#define SING 2
|
||||
#define OVERFLOW 3
|
||||
#define UNDERFLOW 4
|
||||
#define TLOSS 5
|
||||
#define PLOSS 6
|
||||
|
||||
/*
|
||||
* ANSI/POSIX
|
||||
*/
|
||||
extern double acos __P((double));
|
||||
extern double asin __P((double));
|
||||
extern double atan __P((double));
|
||||
extern double atan2 __P((double, double));
|
||||
extern double cos __P((double));
|
||||
extern double sin __P((double));
|
||||
extern double tan __P((double));
|
||||
|
||||
extern double cosh __P((double));
|
||||
extern double sinh __P((double));
|
||||
extern double tanh __P((double));
|
||||
|
||||
extern double exp __P((double));
|
||||
extern double frexp __P((double, int*));
|
||||
extern double ldexp __P((double, int));
|
||||
extern double log __P((double));
|
||||
extern double log10 __P((double));
|
||||
extern double modf __P((double, double*));
|
||||
|
||||
extern double pow __P((double, double));
|
||||
extern double sqrt __P((double));
|
||||
|
||||
extern double ceil __P((double));
|
||||
extern double fabs __P((double));
|
||||
extern double floor __P((double));
|
||||
extern double fmod __P((double, double));
|
||||
|
||||
extern double erf __P((double));
|
||||
extern double erfc __P((double));
|
||||
extern double gamma __P((double));
|
||||
extern double hypot __P((double, double));
|
||||
extern int isnan __P((double));
|
||||
extern int finite __P((double));
|
||||
extern double j0 __P((double));
|
||||
extern double j1 __P((double));
|
||||
extern double jn __P((int, double));
|
||||
extern double lgamma __P((double));
|
||||
extern double y0 __P((double));
|
||||
extern double y1 __P((double));
|
||||
extern double yn __P((int, double));
|
||||
|
||||
extern double acosh __P((double));
|
||||
extern double asinh __P((double));
|
||||
extern double atanh __P((double));
|
||||
extern double cbrt __P((double));
|
||||
extern double logb __P((double));
|
||||
extern double nextafter __P((double, double));
|
||||
extern double remainder __P((double, double));
|
||||
#ifdef _SCALB_INT
|
||||
extern double scalb __P((double, int));
|
||||
#else
|
||||
extern double scalb __P((double, double));
|
||||
#endif
|
||||
|
||||
extern int matherr __P((struct exception*));
|
||||
|
||||
/*
|
||||
* IEEE Test Vector
|
||||
*/
|
||||
extern double significand __P((double));
|
||||
|
||||
/*
|
||||
* Functions callable from C, intended to support IEEE arithmetic.
|
||||
*/
|
||||
extern double copysign __P((double, double));
|
||||
extern int ilogb __P((double));
|
||||
extern double rint __P((double));
|
||||
extern double scalbn __P((double, int));
|
||||
|
||||
/*
|
||||
* BSD math library entry points
|
||||
*/
|
||||
extern double expm1 __P((double));
|
||||
extern double log1p __P((double));
|
||||
|
||||
/*
|
||||
* Reentrant version of gamma & lgamma; passes signgam back by reference
|
||||
* as the second argument; user must allocate space for signgam.
|
||||
*/
|
||||
#ifdef _REENTRANT
|
||||
extern double gamma_r __P((double, int*));
|
||||
extern double lgamma_r __P((double, int*));
|
||||
#endif /* _REENTRANT */
|
||||
|
||||
/* ieee style elementary functions */
|
||||
extern double __ieee754_sqrt __P((double));
|
||||
extern double __ieee754_acos __P((double));
|
||||
extern double __ieee754_acosh __P((double));
|
||||
extern double __ieee754_log __P((double));
|
||||
extern double __ieee754_atanh __P((double));
|
||||
extern double __ieee754_asin __P((double));
|
||||
extern double __ieee754_atan2 __P((double, double));
|
||||
extern double __ieee754_exp __P((double));
|
||||
extern double __ieee754_cosh __P((double));
|
||||
extern double __ieee754_fmod __P((double, double));
|
||||
extern double __ieee754_pow __P((double, double));
|
||||
extern double __ieee754_lgamma_r __P((double, int*));
|
||||
extern double __ieee754_gamma_r __P((double, int*));
|
||||
extern double __ieee754_lgamma __P((double));
|
||||
extern double __ieee754_gamma __P((double));
|
||||
extern double __ieee754_log10 __P((double));
|
||||
extern double __ieee754_sinh __P((double));
|
||||
extern double __ieee754_hypot __P((double, double));
|
||||
extern double __ieee754_j0 __P((double));
|
||||
extern double __ieee754_j1 __P((double));
|
||||
extern double __ieee754_y0 __P((double));
|
||||
extern double __ieee754_y1 __P((double));
|
||||
extern double __ieee754_jn __P((int, double));
|
||||
extern double __ieee754_yn __P((int, double));
|
||||
extern double __ieee754_remainder __P((double, double));
|
||||
extern int __ieee754_rem_pio2 __P((double, double*));
|
||||
#ifdef _SCALB_INT
|
||||
extern double __ieee754_scalb __P((double, int));
|
||||
#else
|
||||
extern double __ieee754_scalb __P((double, double));
|
||||
#endif
|
||||
|
||||
/* fdlibm kernel function */
|
||||
extern double __kernel_standard __P((double, double, int));
|
||||
extern double __kernel_sin __P((double, double, int));
|
||||
extern double __kernel_cos __P((double, double));
|
||||
extern double __kernel_tan __P((double, double, int));
|
||||
extern int __kernel_rem_pio2 __P((double*, double*, int, int, int, const int*));
|
||||
|
||||
#ifdef __cplusplus
|
||||
};
|
||||
#endif
|
||||
|
||||
#endif /* FDLIBM_H */
|
||||
@@ -0,0 +1,573 @@
|
||||
#include "ansi_fp.h"
|
||||
#include "ansi_fp.h"
|
||||
#include "limits.h"
|
||||
#include "float.h"
|
||||
|
||||
static int __count_trailing_zerol(unsigned long x) {
|
||||
int result = 0;
|
||||
int bits_not_checked = sizeof(unsigned long) * CHAR_BIT;
|
||||
int n = bits_not_checked / 2;
|
||||
int mask_size = n;
|
||||
unsigned long mask = (~0UL) >> (bits_not_checked - n);
|
||||
|
||||
while (bits_not_checked) {
|
||||
if (!(x & mask)) {
|
||||
result += mask_size;
|
||||
x >>= mask_size;
|
||||
bits_not_checked -= mask_size;
|
||||
} else if (mask == 1) {
|
||||
break;
|
||||
}
|
||||
|
||||
if (n > 1) {
|
||||
n /= 2;
|
||||
}
|
||||
|
||||
if (mask > 1) {
|
||||
mask >>= n;
|
||||
mask_size -= n;
|
||||
}
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
static int __count_trailing_zero(double x) {
|
||||
unsigned long* l = (unsigned long*)&x;
|
||||
|
||||
if (l[1] != 0) {
|
||||
return __count_trailing_zerol(l[1]);
|
||||
}
|
||||
|
||||
return (int)(sizeof(unsigned long) * CHAR_BIT + __count_trailing_zerol(l[0] | 0x00100000));
|
||||
}
|
||||
|
||||
static int __must_round(const decimal* d, int digits) {
|
||||
unsigned char const* i = d->sig.text + digits;
|
||||
|
||||
if (*i > 5) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (*i < 5) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
{
|
||||
unsigned char const* e = d->sig.text + d->sig.length;
|
||||
|
||||
for (i++; i < e; i++) {
|
||||
if (*i != 0) {
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (d->sig.text[digits - 1] & 1) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
static void __dorounddecup(decimal* d, int digits) {
|
||||
unsigned char* b = d->sig.text;
|
||||
unsigned char* i = b + digits - 1;
|
||||
|
||||
while (1) {
|
||||
if (*i < 9) {
|
||||
*i += 1;
|
||||
break;
|
||||
}
|
||||
if (i == b) {
|
||||
*i = 1;
|
||||
d->exp++;
|
||||
break;
|
||||
}
|
||||
*i-- = 0;
|
||||
}
|
||||
}
|
||||
|
||||
static void __rounddec(decimal* d, int digits) {
|
||||
if (digits > 0 && digits < d->sig.length) {
|
||||
int unkBool = __must_round(d, digits);
|
||||
d->sig.length = digits;
|
||||
|
||||
if (unkBool >= 0) {
|
||||
__dorounddecup(d, digits);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void __ull2dec(decimal* result, unsigned long long val) {
|
||||
result->sign = 0;
|
||||
|
||||
if (val == 0) {
|
||||
result->exp = 0;
|
||||
result->sig.length = 1;
|
||||
result->sig.text[0] = 0;
|
||||
return;
|
||||
}
|
||||
|
||||
if (val < 0) {
|
||||
val = -val;
|
||||
result->sign = 1;
|
||||
}
|
||||
|
||||
result->sig.length = 0;
|
||||
|
||||
for (; val != 0; val /= 10) {
|
||||
result->sig.text[result->sig.length++] = (unsigned char)(val % 10);
|
||||
}
|
||||
|
||||
{
|
||||
unsigned char* i = result->sig.text;
|
||||
unsigned char* j = result->sig.text + result->sig.length;
|
||||
|
||||
for (; i < --j; ++i) {
|
||||
unsigned char t = *i;
|
||||
*i = *j;
|
||||
*j = t;
|
||||
}
|
||||
}
|
||||
|
||||
result->exp = result->sig.length - 1;
|
||||
}
|
||||
|
||||
/* 80364E00-80365078 35F740 0278+00 2/2 0/0 0/0 .text __timesdec */
|
||||
void __timesdec(decimal* result, const decimal* x, const decimal* y) {
|
||||
unsigned long accumulator = 0;
|
||||
unsigned char mantissa[SIGDIGLEN * 2];
|
||||
int i = x->sig.length + y->sig.length - 1;
|
||||
unsigned char* pDigit;
|
||||
unsigned char* ip = mantissa + i + 1;
|
||||
unsigned char* ep = ip;
|
||||
|
||||
result->sign = 0;
|
||||
|
||||
for (; i > 0; i--) {
|
||||
int k = y->sig.length - 1;
|
||||
int j = i - k - 1;
|
||||
int l;
|
||||
int t;
|
||||
const unsigned char* jp;
|
||||
const unsigned char* kp;
|
||||
|
||||
if (j < 0) {
|
||||
j = 0;
|
||||
k = i - 1;
|
||||
}
|
||||
|
||||
jp = x->sig.text + j;
|
||||
kp = y->sig.text + k;
|
||||
l = k + 1;
|
||||
t = x->sig.length - j;
|
||||
|
||||
if (l > t)
|
||||
l = t;
|
||||
|
||||
for (; l > 0; l--, jp++, kp--) {
|
||||
accumulator += *jp * *kp;
|
||||
}
|
||||
|
||||
*--ip = (unsigned char)(accumulator % 10);
|
||||
accumulator /= 10;
|
||||
}
|
||||
|
||||
result->exp = (short)(x->exp + y->exp);
|
||||
|
||||
if (accumulator) {
|
||||
*--ip = (unsigned char)(accumulator);
|
||||
result->exp++;
|
||||
}
|
||||
|
||||
for (i = 0; i < SIGDIGLEN && ip < ep; i++, ip++) {
|
||||
result->sig.text[i] = *ip;
|
||||
}
|
||||
result->sig.length = (unsigned char)(i);
|
||||
|
||||
if (ip < ep && *ip >= 5) {
|
||||
if (*ip == 5) {
|
||||
unsigned char* jp = ip + 1;
|
||||
for (; jp < ep; jp++) {
|
||||
if (*jp != 0)
|
||||
goto round;
|
||||
}
|
||||
if ((ip[-1] & 1) == 0)
|
||||
return;
|
||||
}
|
||||
round:
|
||||
__dorounddecup(result, result->sig.length);
|
||||
}
|
||||
}
|
||||
|
||||
void __str2dec(decimal* d, const char* s, short exp) {
|
||||
int i;
|
||||
|
||||
d->exp = exp;
|
||||
d->sign = 0;
|
||||
|
||||
for (i = 0; i < SIGDIGLEN && *s;) {
|
||||
d->sig.text[i++] = *s++ - '0';
|
||||
}
|
||||
d->sig.length = i;
|
||||
|
||||
if (*s != 0) {
|
||||
if (*s < 5)
|
||||
return;
|
||||
if (*s > 5)
|
||||
goto round;
|
||||
|
||||
{
|
||||
const char* p = s + 1;
|
||||
|
||||
for (; *p != 0; p++) {
|
||||
if (*p != '0')
|
||||
goto round;
|
||||
}
|
||||
|
||||
if ((d->sig.text[i - 1] & 1) == 0)
|
||||
return;
|
||||
}
|
||||
round:
|
||||
__dorounddecup(d, d->sig.length);
|
||||
}
|
||||
}
|
||||
|
||||
static const char* const unused = "179769313486231580793729011405303420";
|
||||
|
||||
/* 8036367C-80364E00 35DFBC 1784+00 2/1 0/0 0/0 .text __two_exp */
|
||||
void __two_exp(decimal* result, long exp) {
|
||||
switch (exp) {
|
||||
case -64:
|
||||
__str2dec(result, "542101086242752217003726400434970855712890625", -20);
|
||||
return;
|
||||
case -53:
|
||||
__str2dec(result, "11102230246251565404236316680908203125", -16);
|
||||
return;
|
||||
case -32:
|
||||
__str2dec(result, "23283064365386962890625", -10);
|
||||
return;
|
||||
case -16:
|
||||
__str2dec(result, "152587890625", -5);
|
||||
return;
|
||||
case -8:
|
||||
__str2dec(result, "390625", -3);
|
||||
return;
|
||||
case -7:
|
||||
__str2dec(result, "78125", -3);
|
||||
return;
|
||||
case -6:
|
||||
__str2dec(result, "15625", -2);
|
||||
return;
|
||||
case -5:
|
||||
__str2dec(result, "3125", -2);
|
||||
return;
|
||||
case -4:
|
||||
__str2dec(result, "625", -2);
|
||||
return;
|
||||
case -3:
|
||||
__str2dec(result, "125", -1);
|
||||
return;
|
||||
case -2:
|
||||
__str2dec(result, "25", -1);
|
||||
return;
|
||||
case -1:
|
||||
__str2dec(result, "5", -1);
|
||||
return;
|
||||
case 0:
|
||||
__str2dec(result, "1", 0);
|
||||
return;
|
||||
case 1:
|
||||
__str2dec(result, "2", 0);
|
||||
return;
|
||||
case 2:
|
||||
__str2dec(result, "4", 0);
|
||||
return;
|
||||
case 3:
|
||||
__str2dec(result, "8", 0);
|
||||
return;
|
||||
case 4:
|
||||
__str2dec(result, "16", 1);
|
||||
return;
|
||||
case 5:
|
||||
__str2dec(result, "32", 1);
|
||||
return;
|
||||
case 6:
|
||||
__str2dec(result, "64", 1);
|
||||
return;
|
||||
case 7:
|
||||
__str2dec(result, "128", 2);
|
||||
return;
|
||||
case 8:
|
||||
__str2dec(result, "256", 2);
|
||||
return;
|
||||
}
|
||||
|
||||
{
|
||||
decimal x2, temp;
|
||||
|
||||
__two_exp(&x2, exp / 2);
|
||||
__timesdec(result, &x2, &x2);
|
||||
|
||||
if (exp & 1) {
|
||||
temp = *result;
|
||||
if (exp > 0) {
|
||||
__str2dec(&x2, "2", 0);
|
||||
} else {
|
||||
__str2dec(&x2, "5", -1);
|
||||
}
|
||||
__timesdec(result, &temp, &x2);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
int __equals_dec(const decimal* x, const decimal* y) {
|
||||
if (x->sig.text[0] == 0) {
|
||||
if (y->sig.text[0] == 0)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
if (y->sig.text[0] == 0) {
|
||||
if (x->sig.text[0] == 0)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (x->exp == y->exp) {
|
||||
int i;
|
||||
int l = x->sig.length;
|
||||
|
||||
if (l > y->sig.length) {
|
||||
l = y->sig.length;
|
||||
}
|
||||
|
||||
for (i = 0; i < l; i++) {
|
||||
if (x->sig.text[i] != y->sig.text[i]) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
if (l == x->sig.length) {
|
||||
for (; i < y->sig.length; ++i) {
|
||||
if (y->sig.text[i] != 0) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
for (; i < x->sig.length; ++i) {
|
||||
if (x->sig.text[i] != 0) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
int __less_dec(const decimal* x, const decimal* y) {
|
||||
if (x->sig.text[0] == 0) {
|
||||
if (y->sig.text[0] != 0)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (y->sig.text[0] == 0) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (x->exp == y->exp) {
|
||||
int i;
|
||||
int l = x->sig.length;
|
||||
|
||||
if (l > y->sig.length) {
|
||||
l = y->sig.length;
|
||||
}
|
||||
|
||||
for (i = 0; i < l; i++) {
|
||||
if (x->sig.text[i] < y->sig.text[i]) {
|
||||
return 1;
|
||||
} else if (y->sig.text[i] < x->sig.text[i]) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
if (l == x->sig.length) {
|
||||
for (; i < y->sig.length; i++) {
|
||||
if (y->sig.text[i] != 0) {
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
return x->exp < y->exp;
|
||||
}
|
||||
|
||||
void __minus_dec(decimal* z, const decimal* x, const decimal* y) {
|
||||
int zlen, dexp;
|
||||
unsigned char *ib, *i, *ie;
|
||||
unsigned char const *jb, *j, *jn;
|
||||
|
||||
*z = *x;
|
||||
|
||||
if (y->sig.text[0] == 0)
|
||||
return;
|
||||
|
||||
zlen = z->sig.length;
|
||||
if (zlen < y->sig.length)
|
||||
zlen = y->sig.length;
|
||||
|
||||
dexp = z->exp - y->exp;
|
||||
zlen += dexp;
|
||||
|
||||
if (zlen > SIGDIGLEN)
|
||||
zlen = SIGDIGLEN;
|
||||
|
||||
while (z->sig.length < zlen) {
|
||||
z->sig.text[z->sig.length++] = 0;
|
||||
}
|
||||
|
||||
ib = z->sig.text;
|
||||
i = ib + zlen;
|
||||
|
||||
if (y->sig.length + dexp < zlen) {
|
||||
i = ib + (y->sig.length + dexp);
|
||||
}
|
||||
|
||||
jb = y->sig.text;
|
||||
j = jb + (i - ib - dexp);
|
||||
jn = j;
|
||||
|
||||
while (i > ib && j > jb) {
|
||||
i--;
|
||||
j--;
|
||||
if (*i < *j) {
|
||||
unsigned char* k = i - 1;
|
||||
while (*k == 0)
|
||||
k--;
|
||||
while (k != i) {
|
||||
--*k;
|
||||
*++k += 10;
|
||||
}
|
||||
}
|
||||
*i -= *j;
|
||||
}
|
||||
|
||||
if (jn - jb < y->sig.length) {
|
||||
int round_down = 0;
|
||||
if (*jn < 5)
|
||||
round_down = 1;
|
||||
else if (*jn == 5) {
|
||||
unsigned char const* ibPtr = y->sig.text + y->sig.length;
|
||||
|
||||
for (j = jn + 1; j < ibPtr; j++) {
|
||||
if (*j != 0)
|
||||
goto done;
|
||||
}
|
||||
i = ib + (jn - jb) + dexp - 1;
|
||||
if (*i & 1)
|
||||
round_down = 1;
|
||||
}
|
||||
if (round_down) {
|
||||
if (*i < 1) {
|
||||
unsigned char* k = i - 1;
|
||||
while (*k == 0)
|
||||
k--;
|
||||
while (k != i) {
|
||||
--*k;
|
||||
*++k += 10;
|
||||
}
|
||||
}
|
||||
*i -= 1;
|
||||
}
|
||||
}
|
||||
done:
|
||||
for (i = ib; *i == 0; ++i) {
|
||||
}
|
||||
|
||||
if (i > ib) {
|
||||
unsigned char dl = (unsigned char)(i - ib);
|
||||
z->exp -= dl;
|
||||
ie = ib + z->sig.length;
|
||||
for (; i < ie; ++i, ++ib)
|
||||
*ib = *i;
|
||||
z->sig.length -= dl;
|
||||
}
|
||||
|
||||
ib = z->sig.text;
|
||||
for (i = ib + z->sig.length; i > ib;) {
|
||||
i--;
|
||||
if (*i != 0)
|
||||
break;
|
||||
}
|
||||
z->sig.length = (unsigned char)(i - ib + 1);
|
||||
}
|
||||
|
||||
/* 803632C8-8036367C 35DC08 03B4+00 1/1 0/0 0/0 .text __num2dec_internal */
|
||||
void __num2dec_internal(decimal* d, double x) {
|
||||
signed char sign = (signed char)(signbit(x) != 0);
|
||||
|
||||
if (x == 0) {
|
||||
d->sign = sign;
|
||||
d->exp = 0;
|
||||
d->sig.length = 1;
|
||||
d->sig.text[0] = 0;
|
||||
return;
|
||||
}
|
||||
|
||||
if (!isfinite(x)) {
|
||||
d->sign = sign;
|
||||
d->exp = 0;
|
||||
d->sig.length = 1;
|
||||
d->sig.text[0] = fpclassify(x) == 1 ? 'N' : 'I';
|
||||
return;
|
||||
}
|
||||
|
||||
if (sign != 0) {
|
||||
x = -x;
|
||||
}
|
||||
|
||||
{
|
||||
int exp;
|
||||
double frac = frexp(x, &exp);
|
||||
long num_bits_extract = DBL_MANT_DIG - __count_trailing_zero(frac);
|
||||
double integer;
|
||||
decimal int_d, pow2_d;
|
||||
|
||||
__two_exp(&pow2_d, exp - num_bits_extract);
|
||||
frac = modf(ldexp(frac, num_bits_extract), &integer);
|
||||
__ull2dec(&int_d, (unsigned long long)integer);
|
||||
__timesdec(d, &int_d, &pow2_d);
|
||||
d->sign = sign;
|
||||
}
|
||||
}
|
||||
|
||||
/* 80363124-803632C8 35DA64 01A4+00 0/0 2/2 0/0 .text __num2dec */
|
||||
void __num2dec(const decform* form, double x, decimal* d) {
|
||||
short digits = form->digits;
|
||||
int i;
|
||||
__num2dec_internal(d, x);
|
||||
|
||||
if (d->sig.text[0] > 9) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (digits > SIGDIGLEN) {
|
||||
digits = SIGDIGLEN;
|
||||
}
|
||||
|
||||
__rounddec(d, digits);
|
||||
|
||||
while (d->sig.length < digits) {
|
||||
d->sig.text[d->sig.length++] = 0;
|
||||
}
|
||||
|
||||
d->exp -= d->sig.length - 1;
|
||||
|
||||
for (i = 0; i < d->sig.length; i++) {
|
||||
d->sig.text[i] += '0';
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,6 @@
|
||||
#ifndef PPC_EABI_SRC_CRITICAL_REGIONSGAMECUBE_H
|
||||
#define PPC_EABI_SRC_CRITICAL_REGIONSGAMECUBE_H
|
||||
|
||||
|
||||
|
||||
#endif /* PPC_EABI_SRC_CRITICAL_REGIONSGAMECUBE_H */
|
||||
@@ -0,0 +1,6 @@
|
||||
#ifndef PPC_EABI_SRC_MATH_PPC_H
|
||||
#define PPC_EABI_SRC_MATH_PPC_H
|
||||
|
||||
|
||||
|
||||
#endif /* PPC_EABI_SRC_MATH_PPC_H */
|
||||
@@ -0,0 +1,6 @@
|
||||
#ifndef PPC_EABI_SRC_UART_CONSOLE_IO_GCN_H
|
||||
#define PPC_EABI_SRC_UART_CONSOLE_IO_GCN_H
|
||||
|
||||
#include "ansi_files.h"
|
||||
|
||||
#endif /* PPC_EABI_SRC_UART_CONSOLE_IO_GCN_H */
|
||||
Some files were not shown because too many files have changed in this diff Show More
Reference in New Issue
Block a user