mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-27 05:00:15 +00:00
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/* Enable floating-point exceptions.
|
|
Copyright (C) 2000-2016 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Andreas Schwab <schwab@suse.de>, 2000.
|
|
|
|
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
|
|
feenableexcept (int excepts)
|
|
{
|
|
unsigned int new_exc, old_exc;
|
|
|
|
/* Get the current control register contents. */
|
|
__asm__ ("fmove%.l %!,%0" : "=dm" (new_exc));
|
|
|
|
old_exc = (new_exc >> 6) & FE_ALL_EXCEPT;
|
|
|
|
excepts &= FE_ALL_EXCEPT;
|
|
|
|
new_exc |= excepts << 6;
|
|
__asm__ ("fmove%.l %0,%!" : : "dm" (new_exc));
|
|
|
|
return old_exc;
|
|
}
|