|
Packit |
6c4009 |
/* Clear given exceptions in current floating-point environment.
|
|
Packit |
6c4009 |
Copyright (C) 2000-2018 Free Software Foundation, Inc.
|
|
Packit |
6c4009 |
This file is part of the GNU C Library.
|
|
Packit |
6c4009 |
Contributed by David Huggins-Daines <dhd@debian.org>, 2000
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is free software; you can redistribute it and/or
|
|
Packit |
6c4009 |
modify it under the terms of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License as published by the Free Software Foundation; either
|
|
Packit |
6c4009 |
version 2.1 of the License, or (at your option) any later version.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is distributed in the hope that it will be useful,
|
|
Packit |
6c4009 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
6c4009 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Packit |
6c4009 |
Lesser General Public License for more details.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
You should have received a copy of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License along with the GNU C Library. If not, see
|
|
Packit |
6c4009 |
<http://www.gnu.org/licenses/>. */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#include <fenv.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
int
|
|
Packit |
6c4009 |
feclearexcept (int excepts)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
union { unsigned long long l; unsigned int sw[2]; } s;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Get the current status word. */
|
|
Packit |
6c4009 |
__asm__ ("fstd %%fr0,0(%1)" : "=m" (s.l) : "r" (&s.l) : "%r0");
|
|
Packit |
6c4009 |
/* Clear all the relevant bits. */
|
|
Packit |
6c4009 |
s.sw[0] &= ~((excepts & FE_ALL_EXCEPT) << 27);
|
|
Packit |
6c4009 |
__asm__ ("fldd 0(%0),%%fr0" : : "r" (&s.l), "m" (s.l) : "%r0");
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Success. */
|
|
Packit |
6c4009 |
return 0;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
libm_hidden_def (feclearexcept)
|