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include: Define fpclassify(). 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2021-10-15 11:05:38 +02:00
parent da8176df61
commit 2971716835
1 changed files with 13 additions and 0 deletions
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13
include/msvcrt/math.h
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@ -251,11 +251,22 @@ static const union {
#define FP_ILOGB0 (-0x7fffffff - _C2)
#define FP_ILOGBNAN 0x7fffffff
#if _MSVCR_VER >= 120
_ACRTIMP short __cdecl _dclass(double);
_ACRTIMP short __cdecl _fdclass(float);
_ACRTIMP int __cdecl _dsign(double);
_ACRTIMP int __cdecl _fdsign(float);
#define fpclassify(x) (sizeof(x) == sizeof(float) ? _fdclass(x) : _dclass(x))
#define signbit(x) (sizeof(x) == sizeof(float) ? _fdsign(x) : _dsign(x))
#define isinf(x) (fpclassify(x) == FP_INFINITE)
#define isnan(x) (fpclassify(x) == FP_NAN)
#define isnormal(x) (fpclassify(x) == FP_NORMAL)
#define isfinite(x) (fpclassify(x) <= 0)
#else
static inline int __isnanf(float x)
{
union { float x; unsigned int i; } u = { x };
@ -303,6 +314,8 @@ static inline int __signbit(double x)
#define signbit(x) (sizeof(x) == sizeof(float) ? __signbitf(x) : __signbit(x))
#define isfinite(x) (!isinf(x) && !isnan(x))
#endif
#ifdef __cplusplus
}
#endif