mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 00:31:08 +00:00
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/* Store current floating-point environment and clear exceptions.
|
|
Copyright (C) 1997, 1998, 1999, 2005 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.h>
|
|
#include <fpu_control.h>
|
|
|
|
#include <unistd.h>
|
|
#include <ldsodefs.h>
|
|
#include <dl-procinfo.h>
|
|
#include <sysdep.h>
|
|
|
|
int
|
|
feholdexcept (fenv_t *envp)
|
|
{
|
|
if (GLRO (dl_hwcap) & HWCAP_ARM_VFP)
|
|
{
|
|
unsigned long int temp;
|
|
|
|
/* Store the environment. */
|
|
_FPU_GETCW(temp);
|
|
envp->__cw = temp;
|
|
|
|
/* Now set all exceptions to non-stop. */
|
|
temp &= ~(FE_ALL_EXCEPT << FE_EXCEPT_SHIFT);
|
|
|
|
/* And clear all exception flags. */
|
|
temp &= ~FE_ALL_EXCEPT;
|
|
|
|
_FPU_SETCW(temp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Unsupported, so fail. */
|
|
return 1;
|
|
}
|
|
|
|
libm_hidden_def (feholdexcept)
|