/*      $NetBSD: fpsetsticky.c,v 1.10 2017/02/27 06:55:26 chs Exp $     */

/*
 * Written by J.T. Conklin, Apr 11, 1995
 * Public domain.
 */

#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: fpsetsticky.c,v 1.10 2017/02/27 06:55:26 chs Exp $");
#endif /* LIBC_SCCS and not lint */

#include "namespace.h"

#include <ieeefp.h>

#ifdef __weak_alias
__weak_alias(fpsetsticky,_fpsetsticky)
#endif

fp_except
fpsetsticky(fp_except sticky)
{
        fp_except old;
        fp_except new;

        __asm(".set push; .set noat; cfc1 %0,$31; .set pop" : "=r" (old));

        new = old & ~(0x1f << 2); 
        new |= (sticky & 0x1f) << 2;

        __asm(".set push; .set noat; ctc1 %0,$31; .set pop" : : "r" (new));

        return (old >> 2) & 0x1f;
}