ReceiveTempSMS
/
Sweden-Number
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

msvcrt: Don't use fegetenv in nearbyint. 

The fegetenv/feupdateenv functions are broken in msvcr120 and are
causing unintentional SSE control word changes.

Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Piotr Caban 2022-01-31 21:36:33 +01:00 committed by Alexandre Julliard
parent e617fe0bda
commit 5d9d195f49
1 changed files with 17 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
dlls/msvcrt/math.c
View File

@ -6844,13 +6844,25 @@ double CDECL _yn(int n, double x)
*/
double CDECL nearbyint(double x)
{
fenv_t env;
BOOL update_cw, update_sw;
unsigned int cw, sw;
fegetenv(&env);
_control87(_MCW_EM, _MCW_EM);
_setfp(&cw, 0, &sw, 0);
update_cw = !(cw & _EM_INEXACT);
update_sw = !(sw & _SW_INEXACT);
if (update_cw)
{
cw |= _EM_INEXACT;
_setfp(&cw, _EM_INEXACT, NULL, 0);
}
x = rint(x);
feclearexcept(FE_INEXACT);
feupdateenv(&env);
if (update_cw || update_sw)
{
sw = 0;
cw &= ~_EM_INEXACT;
_setfp(update_cw ? &cw : NULL, _EM_INEXACT,
update_sw ? &sw : NULL, _SW_INEXACT);
}
return x;
}