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msvcrt: Import _hypotf implementation from musl. 

Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Piotr Caban 2021-06-03 16:29:01 +02:00 committed by Alexandre Julliard
parent e55d341c17
commit d86207c1d7
3 changed files with 31 additions and 12 deletions
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33
dlls/msvcrt/math.c
View File

@ -3263,11 +3263,40 @@ double CDECL _hypot(double x, double y)
/*********************************************************************
* _hypotf (MSVCRT.@)
*
* Copied from musl: src/math/hypotf.c
*/
float CDECL _hypotf(float x, float y)
{
/* FIXME: errno handling */
return unix_funcs->hypotf( x, y );
UINT32 ux = *(UINT32*)&x, uy = *(UINT32*)&y, ut;
float z;
ux &= -1U >> 1;
uy &= -1U >> 1;
if (ux < uy) {
ut = ux;
ux = uy;
uy = ut;
}
x = *(float*)&ux;
y = *(float*)&uy;
if (uy == 0xff << 23)
return y;
if (ux >= 0xff << 23 || uy == 0 || ux - uy >= 25 << 23)
return x + y;
z = 1;
if (ux >= (0x7f + 60) << 23) {
z = 0x1p90f;
x *= 0x1p-90f;
y *= 0x1p-90f;
} else if (uy < (0x7f - 60) << 23) {
z = 0x1p-90f;
x *= 0x1p90f;
y *= 0x1p90f;
}
return z * sqrtf((double)x * x + (double)y * y);
}
/*********************************************************************

9
dlls/msvcrt/unixlib.c
View File

@ -94,14 +94,6 @@ static float CDECL unix_fmaf( float x, float y, float z )
#endif
}
/*********************************************************************
* hypotf
*/
static float CDECL unix_hypotf(float x, float y)
{
return hypotf( x, y );
}
/*********************************************************************
* lgamma
*/
@ -257,7 +249,6 @@ static const struct unix_funcs funcs =
unix_exp2,
unix_exp2f,
unix_fmaf,
unix_hypotf,
unix_lgamma,
unix_lgammaf,
unix_log,

1
dlls/msvcrt/unixlib.h
View File

@ -28,7 +28,6 @@ struct unix_funcs
double (CDECL *exp2)(double x);
float (CDECL *exp2f)(float x);
float (CDECL *fmaf)(float x, float y, float z);
float (CDECL *hypotf)(float x, float y);
double (CDECL *lgamma)(double x);
float (CDECL *lgammaf)(float x);
double (CDECL *log)(double x);