blob: 9f86c5fbef87e1667cbe6921bfa34bd79c492f7a (
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
|
/* Disable floating-point exceptions.
Copyright (C) 2000-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Geoffrey Keating <geoffk@geoffk.org>, 2000.
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>
int
fedisableexcept (int excepts)
{
fenv_union_t fe, curr;
int result, new;
/* Get current exception mask to return. */
fe.fenv = curr.fenv = fegetenv_control ();
result = fenv_reg_to_exceptions (fe.l);
if ((excepts & FE_ALL_INVALID) == FE_ALL_INVALID)
excepts = (excepts | FE_INVALID) & ~ FE_ALL_INVALID;
new = fenv_exceptions_to_reg (excepts);
if (fenv_reg_to_exceptions (new) != excepts)
return -1;
/* Sets the new exception mask. */
fe.l &= ~new;
if (fe.l != curr.l)
fesetenv_control (fe.fenv);
__TEST_AND_ENTER_NON_STOP (-1ULL, fe.l);
return result;
}
|
