minix/lib/libc/arch/mips/gen/fpsetmask.c

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/* $NetBSD: fpsetmask.c,v 1.8 2012/03/20 16:19:56 matt Exp $ */
/*
* Written by J.T. Conklin, Apr 11, 1995
* Public domain.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: fpsetmask.c,v 1.8 2012/03/20 16:19:56 matt Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <ieeefp.h>
#ifdef __weak_alias
__weak_alias(fpsetmask,_fpsetmask)
#endif
fp_except
fpsetmask(fp_except mask)
{
fp_except old;
fp_except new;
__asm("cfc1 %0,$31" : "=r" (old));
new = old & ~(0x1f << 7);
new |= ((mask & 0x1f) << 7);
__asm("ctc1 %0,$31" : : "r" (new));
return (old >> 7) & 0x1f;
}