1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1988 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 #include	"lint.h"
31 #include	<sys/types.h>
32 #include	<sys/dl.h>
33 #include	"libc.h"
34 
35 dl_t
ldivide(dl_t lop,dl_t rop)36 ldivide(dl_t lop, dl_t rop)
37 {
38 	int		cnt;
39 	dl_t		ans;
40 	dl_t		tmp;
41 	dl_t		div;
42 
43 	if (lsign(lop))
44 		lop = lsub(lzero, lop);
45 	if (lsign(rop))
46 		rop = lsub(lzero, rop);
47 
48 	ans = lzero;
49 	div = lzero;
50 
51 	for (cnt = 0; cnt < 63; cnt++) {
52 		div = lshiftl(div, 1);
53 		lop = lshiftl(lop, 1);
54 		if (lsign(lop))
55 			div.dl_lop |= 1;
56 		tmp = lsub(div, rop);
57 		ans = lshiftl(ans, 1);
58 		if (lsign(tmp) == 0) {
59 			ans.dl_lop |= 1;
60 			div = tmp;
61 		}
62 	}
63 
64 	return (ans);
65 }
66