blob: 9067cc5d909c5368cf9a3cd91cff99c030aabb26 (
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
|
/* Enable floating-point exceptions.
Copyright (C) 2000-2021 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.h>
int
feenableexcept (int excepts)
{
fenv_t old_fpsr;
fenv_t new_fpsr;
/* Get the current fpsr. */
__asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (old_fpsr));
new_fpsr = old_fpsr & ~((fenv_t) excepts & FE_ALL_EXCEPT);
__asm__ __volatile__ ("mov.m ar.fpsr=%0" :: "r" (new_fpsr) : "memory");
return (old_fpsr ^ FE_ALL_EXCEPT) & FE_ALL_EXCEPT;
}
|
