mirror of
https://github.com/zeldaret/st
synced 2026-05-23 15:01:41 -04:00
Yanis
c98c03de39
* match wstring.c * match math_api.c, mbstring.c, mem.c and mem_funcs.c * more progress * build issues * fix non-matching issues * reorganise files * match fdlibm (+ libc progress) * fix jp build * solved some non-matchings and progress * removed types.h usage in libc * match data and add missing delinks for jp
62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
#ifndef _C_MATH_H
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#define _C_MATH_H
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#include <errno.h>
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#include <fdlibm.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define DONT_INLINE_SQRT
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#define M_PI 3.1415926535897932
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#define M_SQRT3 1.7320499420166016
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extern int __float_nan[];
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extern int __float_huge[];
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extern int __double_huge[];
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#define NAN (*(float *) __float_nan)
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#define INFINITY (*(float *) __float_huge)
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#define HUGE_VAL (*(double *) __double_huge)
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// f64 bit-twiddling macros
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#ifdef __BIG_ENDIAN__
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#define __HI(x) (((int *) &x)[0])
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#define __LO(x) (((int *) &x)[1])
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#else
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#define __HI(x) (((int *) &x)[1])
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#define __LO(x) (((int *) &x)[0])
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#endif
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#define FP_NAN 1
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#define FP_INFINITE 2
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#define FP_ZERO 3
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#define FP_NORMAL 4
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#define FP_SUBNORMAL 5
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int __fpclassifyd(double x);
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int __signbitd(double x);
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double fabs(double x);
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double nan(const char *x);
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double sqrt(double __x);
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#define fpclassify(x) ((sizeof(x) == sizeof(float)) ? __fpclassifyf((float) (x)) : __fpclassifyd((double) (x)))
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#define signbit(x) ((sizeof(x) == sizeof(float)) ? __signbitf((float) (x)) : __signbitd((double) (x)))
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#define isnormal(x) (fpclassify(x) == FP_NORMAL)
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#define isnan(x) (fpclassify(x) == FP_NAN)
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#define isinf(x) (fpclassify(x) == FP_INFINITE)
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#define isfinite(x) (fpclassify(x) > FP_INFINITE)
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static inline long double fabsl(long double x) {
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return (long double) fabs((double) x);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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