ldivide.c revision 7257d1b4d25bfac0c802847390e98a464fd787ac
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
#include "lint.h"
#include <sys/types.h>
#include <sys/dl.h>
#include "libc.h"
dl_t
ldivide(dl_t lop, dl_t rop)
{
int cnt;
dl_t ans;
dl_t tmp;
dl_t div;
if (lsign(lop))
lop = lsub(lzero, lop);
if (lsign(rop))
rop = lsub(lzero, rop);
ans = lzero;
div = lzero;
for (cnt = 0; cnt < 63; cnt++) {
div = lshiftl(div, 1);
lop = lshiftl(lop, 1);
if (lsign(lop))
div.dl_lop |= 1;
tmp = lsub(div, rop);
ans = lshiftl(ans, 1);
if (lsign(tmp) == 0) {
ans.dl_lop |= 1;
div = tmp;
}
}
return (ans);
}