[thirdparty/glibc.git] / sysdeps / generic / setfpucw.c

/* Set the FPU control word.
   Copyright (C) 1996, 1997, 1999 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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <math.h>
#include <fpu_control.h>

void
__setfpucw (fpu_control_t set)
{
  fpu_control_t cw;

  /* Fetch the current control word.  */
  _FPU_GETCW (cw);

  /* Preserve the reserved bits, and set the rest as the user
     specified (or the default, if the user gave zero).  */
  cw &= _FPU_RESERVED;
  cw |= set & ~_FPU_RESERVED;

  _FPU_SETCW (cw);
}
Commit	Line	Data
2a072de4	1	/* Set the FPU control word.
2e65ca2b	2	Copyright (C) 1996, 1997, 1999 Free Software Foundation, Inc.
478b92f0 UD	3	This file is part of the GNU C Library.
	4
	5	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	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.
478b92f0 UD	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
41bdb6e2	13	Lesser General Public License for more details.
478b92f0	14
41bdb6e2 AJ	15	You should have received a copy of the GNU Lesser General Public
	16	License along with the GNU C Library; if not, write to the Free
	17	Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	18	02111-1307 USA. */
28f540f4	19
2e65ca2b	20	#include <math.h>
f2ea0f5b	21	#include <fpu_control.h>
2a072de4 RM	22
	23	void
	24	__setfpucw (fpu_control_t set)
	25	{
	26	fpu_control_t cw;
	27
	28	/* Fetch the current control word. */
	29	_FPU_GETCW (cw);
	30
	31	/* Preserve the reserved bits, and set the rest as the user
	32	specified (or the default, if the user gave zero). */
dcf0671d UD	33	cw &= _FPU_RESERVED;
	34	cw \|= set & ~_FPU_RESERVED;
	35
	36	_FPU_SETCW (cw);
2a072de4	37	}