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msvcrt: Use the _dclass()/_fdclass() implementation from the bundled musl library.

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This commit is contained in:
Alexandre Julliard 2023-04-10 14:08:41 +02:00
parent 75eb987768
commit d70a652da8
1 changed files with 4 additions and 30 deletions
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34
dlls/msvcrt/math.c
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@ -207,36 +207,6 @@ float CDECL _chgsignf( float num )
#endif
/*********************************************************************
* _fdclass (MSVCR120.@)
*
* Copied from musl: src/math/__fpclassifyf.c
*/
short CDECL _fdclass(float x)
{
union { float f; UINT32 i; } u = { x };
int e = u.i >> 23 & 0xff;
if (!e) return u.i << 1 ? FP_SUBNORMAL : FP_ZERO;
if (e == 0xff) return u.i << 9 ? FP_NAN : FP_INFINITE;
return FP_NORMAL;
}
/*********************************************************************
* _dclass (MSVCR120.@)
*
* Copied from musl: src/math/__fpclassify.c
*/
short CDECL _dclass(double x)
{
union { double f; UINT64 i; } u = { x };
int e = u.i >> 52 & 0x7ff;
if (!e) return u.i << 1 ? FP_SUBNORMAL : FP_ZERO;
if (e == 0x7ff) return (u.i << 12) ? FP_NAN : FP_INFINITE;
return FP_NORMAL;
}
#ifndef __i386__
/*********************************************************************
@ -291,6 +261,8 @@ float CDECL MSVCRT_atanf( float x )
#endif
#ifdef __x86_64__
extern short CDECL _fdclass(float x);
static BOOL sqrtf_validate( float *x )
{
short c = _fdclass(*x);
@ -411,6 +383,8 @@ double CDECL MSVCRT_exp( double x )
#endif
#if defined(__x86_64__) || defined(__i386__)
extern short CDECL _dclass(double x);
static BOOL sqrt_validate( double *x, BOOL update_sw )
{
short c = _dclass(*x);