/*      $OpenBSD: fpsetround.c,v 1.2 2026/07/11 15:54:36 tb Exp $       */

/*
 * Written by J.T. Conklin, Apr 10, 1995
 * Public domain.
 */

#include <ieeefp.h>

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 (old >> 30) & 0x03;
}