Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-07-31 11:31:40 +00:00
Code Issues Projects Releases Packages Wiki Activity

[INCLUDE/CRT]

Browse source 
Partly revert r56995. Firstly it breaks MSVC builds, secondly the stuff doesn't belong into this header. MS headers don't have __fpclassify etc and our headers are not supposed to contain any fancy additions. If you need it for 3rd party code, put it somewhere else.

svn path=/trunk/; revision=57012
This commit is contained in:
Timo Kreuzer 2012-08-01 08:23:54 +00:00
parent b3b73888b1
commit 716b77c63e
1 changed files with 10 additions and 108 deletions
Download patch file Download diff file Expand all files Collapse all files

118
reactos/include/crt/math.h
View file

@ -240,6 +240,8 @@ extern "C++" {
#pragma pack(pop)
#endif /* !_INC_MATH */
#if defined(_USE_MATH_DEFINES) && !defined(_MATH_DEFINES_DEFINED)
#define _MATH_DEFINES_DEFINED
@ -259,141 +261,41 @@ extern "C++" {
#endif /* _USE_MATH_DEFINES */
#ifdef __cplusplus
extern "C" {
#endif
#ifndef __NO_ISOCEXT
#if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) \
|| !defined __STRICT_ANSI__ || defined __GLIBCPP__
/* 7.12.3.1 */
/*
Return values for fpclassify.
These are based on Intel x87 fpu condition codes
in the high byte of status word and differ from
the return values for MS IEEE 754 extension _fpclass()
*/
#define FP_NAN 0x0100
#define FP_NORMAL 0x0400
#define FP_INFINITE (FP_NAN | FP_NORMAL)
#define FP_ZERO 0x4000
#define FP_SUBNORMAL (FP_NORMAL | FP_ZERO)
/* 0x0200 is signbit mask */
/*
We can't inline float or double, because we want to ensure truncation
to semantic type before classification.
(A normal long double value might become subnormal when
converted to double, and zero when converted to float.)
*/
extern int __cdecl __fpclassifyl (long double);
extern int __cdecl __fpclassifyf (float);
extern int __cdecl __fpclassify (double);
#ifndef __CRT__NO_INLINE
__CRT_INLINE int __cdecl __fpclassifyl (long double x) {
unsigned short sw;
__asm__ __volatile__ ("fxam; fstsw %%ax;" : "=a" (sw): "t" (x));
return sw & (FP_NAN | FP_NORMAL | FP_ZERO );
}
__CRT_INLINE int __cdecl __fpclassify (double x) {
#ifdef __x86_64__
__mingw_dbl_type_t hlp;
unsigned int l, h;
hlp.x = x;
h = hlp.lh.high;
l = hlp.lh.low | (h & 0xfffff);
h &= 0x7ff00000;
if ((h | l) == 0)
return FP_ZERO;
if (!h)
return FP_SUBNORMAL;
if (h == 0x7ff00000)
return (l ? FP_NAN : FP_INFINITE);
return FP_NORMAL;
#else
unsigned short sw;
__asm__ __volatile__ ("fxam; fstsw %%ax;" : "=a" (sw): "t" (x));
return sw & (FP_NAN | FP_NORMAL | FP_ZERO );
#endif
}
__CRT_INLINE int __cdecl __fpclassifyf (float x) {
#ifdef __x86_64__
__mingw_flt_type_t hlp;
hlp.x = x;
hlp.val &= 0x7fffffff;
if (hlp.val == 0)
return FP_ZERO;
if (hlp.val < 0x800000)
return FP_SUBNORMAL;
if (hlp.val >= 0x7f800000)
return (hlp.val > 0x7f800000 ? FP_NAN : FP_INFINITE);
return FP_NORMAL;
#else
unsigned short sw;
__asm__ __volatile__ ("fxam; fstsw %%ax;" : "=a" (sw): "t" (x));
return sw & (FP_NAN | FP_NORMAL | FP_ZERO );
#endif
}
#endif
#define fpclassify(x) (sizeof (x) == sizeof (float) ? __fpclassifyf (x) \
: sizeof (x) == sizeof (double) ? __fpclassify (x) \
: __fpclassifyl (x))
/* 7.12.3.2 */
#define isfinite(x) ((fpclassify(x) & FP_NAN) == 0)
/* 7.12.3.3 */
#define isinf(x) (fpclassify(x) == FP_INFINITE)
/* Inverse hyperbolic trig functions */
/* 7.12.5.1 */
/* Inverse hyperbolic trig functions */
/* 7.12.5.1 */
extern double __cdecl acosh (double);
extern float __cdecl acoshf (float);
extern long double __cdecl acoshl (long double);
/* 7.12.5.2 */
/* 7.12.5.2 */
extern double __cdecl asinh (double);
extern float __cdecl asinhf (float);
extern long double __cdecl asinhl (long double);
/* 7.12.5.3 */
/* 7.12.5.3 */
extern double __cdecl atanh (double);
extern float __cdecl atanhf (float);
extern long double __cdecl atanhl (long double);
/* 7.12.6.2 */
/* 7.12.6.2 */
extern double __cdecl exp2(double);
extern float __cdecl exp2f(float);
extern long double __cdecl exp2l(long double);
/* 7.12.6.10 */
/* 7.12.6.10 */
extern double __cdecl log2 (double);
extern float __cdecl log2f (float);
extern long double __cdecl log2l (long double);
/* 7.12.9.6 */
/* round away from zero, regardless of fpu control word settings */
extern double __cdecl round (double);
extern float __cdecl roundf (float);
extern long double __cdecl roundl (long double);
/* 7.12.9.8 */
/* round towards zero, regardless of fpu control word settings */
/* 7.12.9.8 */
/* round towards zero, regardless of fpu control word settings */
extern double __cdecl trunc (double);
extern float __cdecl truncf (float);
extern long double __cdecl truncl (long double);
#endif /* __STDC_VERSION__ >= 199901L */
#endif /* __NO_ISOCEXT */
#ifdef __cplusplus
} // extern "C"
#endif
#endif /* !_INC_MATH */