45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
|
/* Set current rounding direction.
|
||
|
|
Copyright (C) 2022 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>
|
||
|
|
#include <fpu_control.h>
|
||
|
|
|
||
|
|
int
|
||
|
|
__fesetround (int round)
|
||
|
|
{
|
||
|
|
fpu_control_t cw;
|
||
|
|
|
||
|
|
if ((round & ~_FPU_RC_MASK) != 0)
|
||
|
|
/* ROUND is no valid rounding mode. */
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
/* Get current state. */
|
||
|
|
_FPU_GETCW (cw);
|
||
|
|
|
||
|
|
/* Set rounding bits. */
|
||
|
|
cw &= ~_FPU_RC_MASK;
|
||
|
|
cw |= round;
|
||
|
|
/* Set new state. */
|
||
|
|
_FPU_SETCW (cw);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
libm_hidden_def (__fesetround) weak_alias (__fesetround, fesetround)
|
||
|
|
libm_hidden_weak (fesetround)
|