blob: af4f25d47d7d5cd06986b34e89911c9026163ea2 (
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
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
/* Install given floating-point environment.
Copyright (C) 2004-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
__fesetenv (const fenv_t *envp)
{
if (ARM_HAVE_VFP)
{
unsigned int temp;
_FPU_GETCW (temp);
temp &= _FPU_RESERVED;
if (envp == FE_DFL_ENV)
temp |= _FPU_DEFAULT;
else if (envp == FE_NOMASK_ENV)
temp |= _FPU_IEEE;
else
temp |= envp->__cw & ~_FPU_RESERVED;
_FPU_SETCW (temp);
if (envp == FE_NOMASK_ENV)
{
/* VFPv3 and VFPv4 do not support trapping exceptions, so
test whether the relevant bits were set and fail if
not. */
_FPU_GETCW (temp);
if ((temp & _FPU_IEEE) != _FPU_IEEE)
return 1;
}
/* Success. */
return 0;
}
/* Unsupported, so fail. */
return 1;
}
#include <shlib-compat.h>
libm_hidden_ver (__fesetenv, fesetenv)
versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2);
|
