[thirdparty/glibc.git] / sysdeps / ia64 / fpu / get-rounding-mode.h

/* Return current rounding direction within libc.  IA64 version.
   Copyright (C) 1999-2019 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 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
   <https://www.gnu.org/licenses/>.  */

#ifndef IA64_GET_ROUNDING_MODE_H
#define IA64_GET_ROUNDING_MODE_H	1

#include <fenv.h>

/* Return the floating-point rounding mode.  */

static inline int
get_rounding_mode (void)
{
  fenv_t fpsr;

  __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr));

  return (fpsr >> 10) & 3;
}

#endif /* get-rounding-mode.h */
Commit	Line	Data
15055a1c	1	/* Return current rounding direction within libc. IA64 version.
04277e02	2	Copyright (C) 1999-2019 Free Software Foundation, Inc.
15055a1c MF	3	This file is part of the GNU C Library.
	4	Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 1999.
	5
	6	The GNU C Library is free software; you can redistribute it and/or
	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.
	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
	14	Lesser General Public License for more details.
	15
	16	You should have received a copy of the GNU Lesser General Public
	17	License along with the GNU C Library; if not, see
5a82c748	18	<https://www.gnu.org/licenses/>. */
15055a1c MF	19
	20	#ifndef IA64_GET_ROUNDING_MODE_H
	21	#define IA64_GET_ROUNDING_MODE_H 1
	22
	23	#include <fenv.h>
	24
	25	/* Return the floating-point rounding mode. */
	26
	27	static inline int
	28	get_rounding_mode (void)
	29	{
	30	fenv_t fpsr;
	31
	32	__asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr));
	33
	34	return (fpsr >> 10) & 3;
	35	}
	36
	37	#endif /* get-rounding-mode.h */