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/* $NetBSD: fpsetround.c,v 1.6 2012/03/21 00:38:35 christos Exp $ */
/*
* Written by J.T. Conklin, Apr 10, 1995
* Public domain.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: fpsetround.c,v 1.6 2012/03/21 00:38:35 christos Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <ieeefp.h>
#ifdef __weak_alias
__weak_alias(fpsetround,_fpsetround)
#endif
fp_rnd
fpsetround(fp_rnd rnd_dir)
{
fp_rnd old;
fp_rnd new;
__asm("st %%fsr,%0" : "=m" (*&old));
new = old;
new &= ~(0x03 << 30);
new |= ((rnd_dir & 0x03) << 30);
__asm("ld %0,%%fsr" : : "m" (*&new));
return ((unsigned int)old >> 30) & 0x03;
}
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