mirror of git://sourceware.org/git/glibc.git
44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/* Copyright (C) 1993 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Olaf Flebbe.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <fpu_control.h>
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void
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__setfpucw (fpu_control)
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unsigned short fpu_control;
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{
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volatile unsigned short cw;
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/* If user supplied _fpu_control, use it ! */
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if (!fpu_control)
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{
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/* use linux defaults */
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fpu_control = _FPU_DEFAULT;
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}
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/* Get Control Word */
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__asm__ volatile ("fnstcw %0" : "=m" (cw) : );
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/* mask in */
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cw &= _FPU_RESERVED;
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cw = cw | (fpu_control & ~_FPU_RESERVED);
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/* set cw */
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__asm__ volatile ("fldcw %0" :: "m" (cw));
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}
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