blob: 5f2f74778243ab5b5fc43d7ca8679eaf18ee8250 (
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
|
/* Set current rounding direction.
Copyright (C) 1997-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
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.h>
int
__fesetround (int round)
{
fexcept_t fpcr;
if (round & ~FE_UPWARD)
/* ROUND is no valid rounding mode. */
return 1;
__asm__ ("fmove%.l %!,%0" : "=dm" (fpcr));
fpcr &= ~FE_UPWARD;
fpcr |= round;
__asm__ __volatile__ ("fmove%.l %0,%!" : : "dm" (fpcr));
return 0;
}
libm_hidden_def (__fesetround)
weak_alias (__fesetround, fesetround)
libm_hidden_weak (fesetround)
|
