[thirdparty/glibc.git] / ports / sysdeps / alpha / fpu / fegetround.c

/* Return current rounding direction.
   Copyright (C) 1997-2014 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Richard Henderson <rth@tamu.edu>, 1997

   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_libc.h>

int
fegetround (void)
{
  unsigned long fpcr;

  __asm__ __volatile__("excb; mf_fpcr %0" : "=f"(fpcr));

  return (fpcr >> FPCR_ROUND_SHIFT) & 3;
}
libm_hidden_def (fegetround)
Commit	Line	Data
91650f79	1	/* Return current rounding direction.
d4697bc9	2	Copyright (C) 1997-2014 Free Software Foundation, Inc.
91650f79 UD	3	This file is part of the GNU C Library.
	4	Contributed by Richard Henderson <rth@tamu.edu>, 1997
	5
	6	The GNU C Library is free software; you can redistribute it and/or
3214b89b 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.
91650f79 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
3214b89b	14	Lesser General Public License for more details.
91650f79	15
3214b89b	16	You should have received a copy of the GNU Lesser General Public
ab84e3ff PE	17	License along with the GNU C Library. If not, see
ab84e3ff PE	18	<http://www.gnu.org/licenses/>. */
91650f79	19
c9bca511	20	#include <fenv_libc.h>
91650f79 UD	21
	22	int
	23	fegetround (void)
	24	{
	25	unsigned long fpcr;
	26
	27	__asm__ __volatile__("excb; mf_fpcr %0" : "=f"(fpcr));
	28
c9bca511	29	return (fpcr >> FPCR_ROUND_SHIFT) & 3;
91650f79	30	}
3c1c46a6	31	libm_hidden_def (fegetround)