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msvcrt: Import roundf 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 2021-04-29 17:06:27 +02:00 committed by Alexandre Julliard
parent 30200117d2
commit 833e8cdd42
6 changed files with 24 additions and 20 deletions
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1
configure vendored
View File

@ -19656,7 +19656,6 @@ for ac_func in \
rint \
rintf \
round \
roundf \
tgamma \
tgammaf \
trunc \

1
configure.ac
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@ -2699,7 +2699,6 @@ AC_CHECK_FUNCS(\
rint \
rintf \
round \
roundf \
tgamma \
tgammaf \
trunc \

25
dlls/msvcrt/math.c
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@ -4329,10 +4329,33 @@ double CDECL round(double x)
/*********************************************************************
* roundf (MSVCR120.@)
*
* Copied from musl: src/math/roundf.c
*/
float CDECL roundf(float x)
{
return unix_funcs->roundf(x);
static const float toint = 1 / FLT_EPSILON;
unsigned int ix = *(unsigned int*)&x;
int e = ix >> 23 & 0xff;
float y;
if (e >= 0x7f + 23)
return x;
if (ix >> 31)
x = -x;
if (e < 0x7f - 1)
return 0 * *(float*)&ix;
y = fp_barrierf(x + toint) - toint - x;
if (y > 0.5f)
y = y + x - 1;
else if (y <= -0.5f)
y = y + x + 1;
else
y = y + x;
if (ix >> 31)
y = -y;
return y;
}
/*********************************************************************

13
dlls/msvcrt/unixlib.c
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@ -765,18 +765,6 @@ static double CDECL unix_round(double x)
#endif
}
/*********************************************************************
* roundf
*/
static float CDECL unix_roundf(float x)
{
#ifdef HAVE_ROUNDF
return roundf(x);
#else
return unix_round(x);
#endif
}
/*********************************************************************
* lround
*/
@ -1013,7 +1001,6 @@ static const struct unix_funcs funcs =
unix_rint,
unix_rintf,
unix_round,
unix_roundf,
unix_sin,
unix_sinf,
unix_sinh,

1
dlls/msvcrt/unixlib.h
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@ -95,7 +95,6 @@ struct unix_funcs
double (CDECL *rint)(double x);
float (CDECL *rintf)(float x);
double (CDECL *round)(double x);
float (CDECL *roundf)(float x);
double (CDECL *sin)(double x);
float (CDECL *sinf)(float x);
double (CDECL *sinh)(double x);

3
include/config.h.in
View File

@ -705,9 +705,6 @@
/* Define to 1 if you have the `round' function. */
#undef HAVE_ROUND
/* Define to 1 if you have the `roundf' function. */
#undef HAVE_ROUNDF
/* Define to 1 if you have the <sasl/sasl.h> header file. */
#undef HAVE_SASL_SASL_H