glibc/sysdeps/ia64/fpu/feenablxcpt.c
Ulrich Drepper c0ac34e447 Update.
* mutex.c (__pthread_mutex_unlock): For PTHREAD_MUTEX_RECURSIVE_NP
	test for owner first.
	Patch by Kaz Kylheku <kaz@ashi.footprints.net>.
2000-09-28 23:11:33 +00:00

38 lines
1.3 KiB
C

/* Enable floating-point exceptions.
Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jes Sorensen <Jes.Sorensen@cern.ch>, 2000.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <fenv.h>
int
feenableexcept (int excepts)
{
fenv_t old_fpsr;
fenv_t new_fpsr;
/* Get the current fpsr. */
__asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r " (old_fpsr));
new_fpsr = old_fpsr & ~((fenv_t) excepts & FE_ALL_EXCEPT);
__asm__ __volatile__ ("mov.m ar.fpsr=%0" :: "r" (new_fpsr) : "memory");
return (old_fpsr ^ FE_ALL_EXCEPT) & FE_ALL_EXCEPT;
}