blob: 3062b3560fc9a1c4ae5b7d0ce99298801a1f6b8b (
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
|
/* Install given floating-point control modes. Alpha version.
Copyright (C) 2016-2019 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_libc.h>
int
fesetmode (const femode_t *modep)
{
unsigned long int fpcr;
unsigned long int swcr;
femode_t mode;
/* As in fesetenv. */
if ((long int) modep >= 0)
mode = *modep;
else
mode = (unsigned long int) modep;
__asm__ __volatile__ ("excb; mf_fpcr %0" : "=f" (fpcr));
fpcr = (fpcr & ~FPCR_ROUND_MASK) | (mode & FPCR_ROUND_MASK);
__asm__ __volatile__ ("mt_fpcr %0" : : "f" (fpcr));
swcr = __ieee_get_fp_control ();
swcr = ((mode & SWCR_ALL_MASK & ~SWCR_STATUS_MASK)
| (swcr & SWCR_STATUS_MASK));
__ieee_set_fp_control (swcr);
return 0;
}
|
