mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 15:30:07 +00:00
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
/* Store current floating-point environment and clear exceptions.
|
|
Copyright (C) 1997-2016 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 1999
|
|
|
|
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>
|
|
|
|
int
|
|
__feholdexcept (fenv_t *envp)
|
|
{
|
|
fenv_t fpsr;
|
|
/* Save the current state. */
|
|
__asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr));
|
|
*envp = fpsr;
|
|
|
|
/* Set the trap disable bits. */
|
|
fpsr |= FE_ALL_EXCEPT;
|
|
|
|
/* And clear the exception bits. */
|
|
fpsr &= ~(fenv_t) (FE_ALL_EXCEPT << 13);
|
|
|
|
__asm__ __volatile__ ("mov.m ar.fpsr=%0" :: "r" (fpsr));
|
|
|
|
/* Success. */
|
|
return 0;
|
|
}
|
|
libm_hidden_def (__feholdexcept)
|
|
weak_alias (__feholdexcept, feholdexcept)
|
|
libm_hidden_weak (feholdexcept)
|