blob: 0f3980253e34c9673d8c83588a577ac9b616baae (
plain)
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
36
37
38
39
40
41
|
/* Store current floating-point environment and clear exceptions.
Copyright (C) 1997-2014 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)
|
GitWeb
