1/*	$OpenBSD: mpyaccs.c,v 1.6 2003/04/10 17:27:58 mickey Exp $	*/
2/*
3  (c) Copyright 1986 HEWLETT-PACKARD COMPANY
4  To anyone who acknowledges that this file is provided "AS IS"
5  without any express or implied warranty:
6      permission to use, copy, modify, and distribute this file
7  for any purpose is hereby granted without fee, provided that
8  the above copyright notice and this notice appears in all
9  copies, and that the name of Hewlett-Packard Company not be
10  used in advertising or publicity pertaining to distribution
11  of the software without specific, written prior permission.
12  Hewlett-Packard Company makes no representations about the
13  suitability of this software for any purpose.
14*/
15/* @(#)mpyaccs.c: Revision: 1.6.88.1 Date: 93/12/07 15:06:39 */
16
17#include "md.h"
18
19void
20mpyaccs(opnd1,opnd2,result)
21	int opnd1, opnd2;
22	struct mdsfu_register *result;
23{
24	struct mdsfu_register temp;
25	int carry, sign;
26
27	s_xmpy(&opnd1,&opnd2,&temp);
28
29	/* get result of low word add, and check for carry out */
30	if ((result_lo += (unsigned)temp.rslt_lo) < (unsigned)temp.rslt_lo)
31		carry = 1;
32	else
33		carry = 0;
34
35	/* get result of high word add, and determine overflow status */
36	sign = result_hi ^ temp.rslt_hi;
37	result_hi += temp.rslt_hi + carry;
38	if (sign >= 0 && (temp.rslt_hi ^ result_hi) < 0)
39		overflow = TRUE;
40}
41