blob: 3af1415b0fcbae94771d479f54664b6e662db417 (
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
|
/* Store current floating-point environment and clear exceptions.
Copyright (C) 1997-2021 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
<https://www.gnu.org/licenses/>. */
#include <fenv_libc.h>
#include <fpu_control.h>
int
__feholdexcept (fenv_t *envp)
{
fenv_union_t old, new;
/* Save the currently set exceptions. */
old.fenv = *envp = fegetenv_register ();
/* Clear everything except for the rounding modes and non-IEEE arithmetic
flag. */
new.l = old.l & 0xffffffff00000007LL;
if (new.l == old.l)
return 0;
__TEST_AND_ENTER_NON_STOP (old.l, 0ULL);
/* Put the new state in effect. */
fesetenv_register (new.fenv);
return 0;
}
libm_hidden_def (__feholdexcept)
weak_alias (__feholdexcept, feholdexcept)
libm_hidden_weak (feholdexcept)
|
