[thirdparty/glibc.git] / sysdeps / i386 / fpu / fegetexcept.c

/* Get enabled floating-point exceptions.
   Copyright (C) 1999-2016 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Andreas Jaeger <aj@suse.de>, 1999.

   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
fegetexcept (void)
{
  unsigned short int exc;

  /* Get the current control word.  */
  __asm__ ("fstcw %0" : "=m" (*&exc));

  return (~exc) & FE_ALL_EXCEPT;
}
Commit	Line	Data
05ef7ce9	1	/* Get enabled floating-point exceptions.
f7a9f785	2	Copyright (C) 1999-2016 Free Software Foundation, Inc.
05ef7ce9 UD	3	This file is part of the GNU C Library.
	4	Contributed by Andreas Jaeger <aj@suse.de>, 1999.
	5
	6	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	7	modify it under the terms of the GNU Lesser General Public
	8	License as published by the Free Software Foundation; either
	9	version 2.1 of the License, or (at your option) any later version.
05ef7ce9 UD	10
	11	The GNU C Library is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	14	Lesser General Public License for more details.
05ef7ce9	15
41bdb6e2	16	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	17	License along with the GNU C Library; if not, see
59ba27a6 PE	18	<http://www.gnu.org/licenses/>. */
05ef7ce9 UD	19
	20	#include <fenv.h>
	21
	22	int
	23	fegetexcept (void)
	24	{
	25	unsigned short int exc;
	26
	27	/* Get the current control word. */
	28	__asm__ ("fstcw %0" : "=m" (*&exc));
	29
522554b1	30	return (~exc) & FE_ALL_EXCEPT;
05ef7ce9	31	}