/*      $NetBSD: flt_rounds.S,v 1.7 2014/05/22 15:01:56 uebayasi Exp $  */

#include <machine/asm.h>

/*
 * 00 0 round to zero 
 * 01 1 round to nearest
 * 10 2 round to positive infinity
 * 11 3 round to negative infinity
 */
        .text
        _ALIGN_TEXT
ENTRY(__flt_rounds)
        fnstcw  -4(%rsp)
        movl    -4(%rsp), %ecx
        shrl    $9, %ecx
        andl    $6, %ecx
        movl    $0x2d, %eax     /* 0x2d = 00.10.11.01 */
        sarl    %cl, %eax       /* 0,1,2,3 -> 1,3,2,0 */
        andl    $3, %eax
        ret
END(__flt_rounds)