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msvcrt: Import ceil implementation from musl.

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Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Piotr Caban 2021-05-17 15:38:01 +02:00 committed by Alexandre Julliard
parent e5d667de2f
commit 2a5e68ab80
3 changed files with 22 additions and 11 deletions
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23
dlls/msvcrt/math.c
View File

@ -1740,10 +1740,31 @@ float CDECL _hypotf(float x, float y)
/*********************************************************************
* ceil (MSVCRT.@)
*
* Based on musl: src/math/ceilf.c
*/
double CDECL ceil( double x )
{
return unix_funcs->ceil(x);
union {double f; UINT64 i;} u = {x};
int e = (u.i >> 52 & 0x7ff) - 0x3ff;
UINT64 m;
if (e >= 52)
return x;
if (e >= 0) {
m = 0x000fffffffffffffULL >> e;
if ((u.i & m) == 0)
return x;
if (u.i >> 63 == 0)
u.i += m;
u.i &= ~m;
} else {
if (u.i >> 63)
return -0.0;
else if (u.i << 1)
return 1.0;
}
return u.f;
}
/*********************************************************************

9
dlls/msvcrt/unixlib.c
View File

@ -121,14 +121,6 @@ static float CDECL unix_atanhf(float x)
#endif
}
/*********************************************************************
* ceil
*/
static double CDECL unix_ceil( double x )
{
return ceil( x );
}
/*********************************************************************
* ceilf
*/
@ -713,7 +705,6 @@ static const struct unix_funcs funcs =
unix_asinhf,
unix_atanh,
unix_atanhf,
unix_ceil,
unix_ceilf,
unix_cos,
unix_cosf,

1
dlls/msvcrt/unixlib.h
View File

@ -29,7 +29,6 @@ struct unix_funcs
float (CDECL *asinhf)(float x);
double (CDECL *atanh)(double x);
float (CDECL *atanhf)(float x);
double (CDECL *ceil)(double x);
float (CDECL *ceilf)(float x);
double (CDECL *cos)(double x);
float (CDECL *cosf)(float x);