/*      $OpenBSD: flt_rounds.c,v 1.1 2021/04/28 15:38:59 kettenis Exp $ */

/*
 * Written by Mark Kettenis based on the hppa version written by
 * Miodrag Vallat.  Public domain.
 */

#include <sys/types.h>
#include <float.h>

static const int map[] = {
        1,      /* round to nearest, ties to even */
        0,      /* round to zero */
        3,      /* round to negative infinity */
        2,      /* round to positive infinity */
        4,      /* round to nearest, ties away from zero */
        -1,     /* invalid */
        -1,     /* invalid */
        -1      /* invalid */
};

int
__flt_rounds(void)
{
        uint32_t frm;

        __asm volatile ("frrm %0" : "=r"(frm));
        return map[frm];
}
DEF_STRONG(__flt_rounds);