blob: 5df96d2d0e6f596e8d307c27da410c9078bc713f (
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
36
37
38
39
40
41
42
43
|
/* Set current rounding direction.
Copyright (C) 1998, 2000, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998.
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>
#include <fpu_control.h>
int
fesetround (int round)
{
unsigned int cw;
if ((round & ~0x3) != 0)
/* ROUND is no valid rounding mode. */
return 0;
/* Get current state. */
_FPU_GETCW (cw);
/* Set rounding bits. */
cw &= ~0x3;
cw |= round;
/* Set new state. */
_FPU_SETCW (cw);
return 1;
}
libm_hidden_def (fesetround)
|
