[thirdparty/glibc.git] / sysdeps / x86_64 / fpu / fegetexcept.c

/* Get enabled floating-point exceptions.
   Copyright (C) 2001-2023 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>

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
c9cf6dde	1	/* Get enabled floating-point exceptions.
6d7e8eda	2	Copyright (C) 2001-2023 Free Software Foundation, Inc.
c9cf6dde	3	This file is part of the GNU C Library.
c9cf6dde AJ	4
	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
59ba27a6	16	License along with the GNU C Library; if not, see
5a82c748	17	<https://www.gnu.org/licenses/>. */
c9cf6dde AJ	18
	19	#include <fenv.h>
	20
	21	int
	22	fegetexcept (void)
	23	{
	24	unsigned short int exc;
	25
	26	/* Get the current control word. */
	27	__asm__ ("fstcw %0" : "=m" (*&exc));
	28
	29	return (~exc) & FE_ALL_EXCEPT;
	30	}