mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-15 17:40:06 +00:00
04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/* Install given floating-point control modes. PowerPC version.
|
|
Copyright (C) 2016-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <fenv_libc.h>
|
|
#include <fpu_control.h>
|
|
|
|
#define _FPU_MASK_ALL (_FPU_MASK_ZM | _FPU_MASK_OM | _FPU_MASK_UM \
|
|
| _FPU_MASK_XM | _FPU_MASK_IM)
|
|
|
|
#define FPU_STATUS 0xbffff700ULL
|
|
|
|
int
|
|
fesetmode (const femode_t *modep)
|
|
{
|
|
fenv_union_t old, new;
|
|
|
|
/* Logic regarding enabled exceptions as in fesetenv. */
|
|
|
|
new.fenv = *modep;
|
|
old.fenv = fegetenv_register ();
|
|
new.l = (new.l & ~FPU_STATUS) | (old.l & FPU_STATUS);
|
|
|
|
if (old.l == new.l)
|
|
return 0;
|
|
|
|
if ((old.l & _FPU_MASK_ALL) == 0 && (new.l & _FPU_MASK_ALL) != 0)
|
|
(void) __fe_nomask_env_priv ();
|
|
|
|
if ((old.l & _FPU_MASK_ALL) != 0 && (new.l & _FPU_MASK_ALL) == 0)
|
|
(void) __fe_mask_env ();
|
|
|
|
fesetenv_register (new.fenv);
|
|
return 0;
|
|
}
|