37 lines
1.4 KiB
C
37 lines
1.4 KiB
C
/* Store current floating-point environment and clear exceptions.
|
|
Copyright (C) 2000, 2005, 2007 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
|
|
|
|
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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <fenv_libc.h>
|
|
#include <fpu_control.h>
|
|
|
|
int feholdexcept (fenv_t *envp)
|
|
{
|
|
fexcept_t fpc;
|
|
/* Store the environment. */
|
|
fegetenv (envp);
|
|
/* Clear the current sticky bits as more than one exception
|
|
may be generated. */
|
|
fpc = envp->fpc & ~(FPC_FLAGS_MASK | FPC_DXC_MASK);
|
|
/* Hold from generating fpu exceptions temporarily. */
|
|
_FPU_SETCW ((fpc & ~(FE_ALL_EXCEPT << FPC_EXCEPTION_MASK_SHIFT)));
|
|
return 0;
|
|
}
|
|
libm_hidden_def (feholdexcept)
|