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https://github.com/ACreTeam/ac-decomp
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Cuyler36
93 lines
2.1 KiB
C
93 lines
2.1 KiB
C
#ifndef _MSL_COMMON_FLOAT_H
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#define _MSL_COMMON_FLOAT_H
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#include "MSL_C/MSL_Common_Embedded/Math/fdlibm.h"
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#define FP_SNAN 0
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#define FP_QNAN 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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#define FP_NAN FP_QNAN
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#define fpclassify(x) \
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((sizeof(x) == sizeof(float)) ? __fpclassifyf(x) : __fpclassifyd(x))
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#define signbit(x) \
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((sizeof(x) == sizeof(float)) ? __signbitf(x) : __signbitd(x))
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#define isfinite(x) ((fpclassify(x) > 2))
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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 __signbitf(x) ((int)(__HI(x) & 0x80000000))
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// TODO: OK?
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#define __signbitd(x) ((int)(__HI(x) & 0x80000000))
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extern unsigned long __float_nan[];
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extern unsigned long __float_huge[];
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extern unsigned long __float_max[];
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extern unsigned long __float_epsilon[];
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inline int __fpclassifyf(float __value)
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{
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unsigned long integer = *(unsigned long*)&__value;
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switch (integer & 0x7f800000) {
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case 0x7f800000:
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if ((integer & 0x7fffff) != 0) {
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return FP_QNAN;
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}
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return FP_INFINITE;
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case 0:
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if ((integer & 0x7fffff) != 0) {
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return FP_SUBNORMAL;
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}
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return FP_ZERO;
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}
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return FP_NORMAL;
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}
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inline int __fpclassifyd(double __value)
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{
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switch (__HI(__value) & 0x7ff00000) {
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case 0x7ff00000: {
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if ((__HI(__value) & 0x000fffff) || (__LO(__value) & 0xffffffff))
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return FP_QNAN;
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else
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return FP_INFINITE;
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break;
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}
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case 0: {
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if ((__HI(__value) & 0x000fffff) || (__LO(__value) & 0xffffffff))
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return FP_SUBNORMAL;
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else
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return FP_ZERO;
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break;
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}
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}
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return FP_NORMAL;
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}
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#define FLT_MANT_DIG 24
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#define FLT_DIG 6
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#define FLT_MIN_EXP (-125)
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#define FLT_MIN_10_EXP (-37)
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#define FLT_MAX_EXP 128
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#define FLT_MAX_10_EXP 38
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//#define FLT_MAX 3.40282346638528860e+38f
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#define FLT_EPSILON 1.1920928955078125e-07f
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#define DBL_MANT_DIG 53
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#define DBL_DIG 15
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#define DBL_MIN_EXP (-1021)
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#define DBL_MIN_10_EXP (-308)
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#define DBL_MAX_EXP 1024
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#define DBL_MAX_10_EXP 308
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#endif /* _MSL_COMMON_FLOAT_H */
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