blob: 5b97ade02995f2d6a8dd86e8cb786f5b85241f65 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
/* Store current floating-point environment and clear exceptions.
Copyright (C) 2000-2012 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, see
<http://www.gnu.org/licenses/>. */
#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)
|
