aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/arm/feupdateenv.c
blob: f5deb60ade2f7eebe90351ec16f380a1f1877d90 (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
42
43
44
45
46
47
48
/* Install given floating-point environment and raise exceptions.
   Copyright (C) 1997-2014 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.

   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 <arm-features.h>


int
feupdateenv (const fenv_t *envp)
{
  if (ARM_HAVE_VFP)
    {
      unsigned int temp;

      /* Get the current exception state.  */
      _FPU_GETCW (temp);

      /* Install new environment.  */
      fesetenv (envp);

      /* Raise the saved exceptions.  */
      feraiseexcept (temp & FE_ALL_EXCEPT);

      /* Success.  */
      return 0;
    }

  /* Unsupported, so fail.  */
  return 1;
}
libm_hidden_def (feupdateenv)