blob: 6328c2bb405930808194fedcee56ced21ef0e723 (
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
|
/* Disable floating-point exceptions.
Copyright (C) 2000-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Schwab <schwab@suse.de>, 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.h>
int
fedisableexcept (int excepts)
{
unsigned int old_exc, new_exc;
/* Get the current control register contents. */
__asm__ ("fmove%.l %!,%0" : "=dm" (new_exc));
old_exc = (new_exc >> 6) & FE_ALL_EXCEPT;
excepts &= FE_ALL_EXCEPT;
new_exc &= ~(excepts << 6);
__asm__ ("fmove%.l %0,%!" : : "dm" (new_exc));
return old_exc;
}
|
