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/* Copyright (C) 1993 Olaf Flebbe
This file is part of the Linux C Library.
The Linux C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The Linux 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
Library General Public License for more details. */
#include <fpu_control.h>
void
__setfpucw(unsigned short fpu_control)
{
volatile unsigned short cw;
/* If user supplied _fpu_control, use it ! */
if (!fpu_control)
{
/* use linux defaults */
fpu_control = _FPU_DEFAULT;
}
/* Get Control Word */
__asm__ volatile ("fnstcw %0" : "=m" (cw) : );
/* mask in */
cw &= _FPU_RESERVED;
cw = cw | (fpu_control & ~_FPU_RESERVED);
/* set cw */
__asm__ volatile ("fldcw %0" :: "m" (cw));
}
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