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 #pragma ident "%Z%%M% %I% %E% SMI"
31
32 #include "lint.h"
33 #include <sys/types.h>
34 #include <sys/dl.h>
35 #include "libc.h"
36
37 dl_t
ldivide(dl_t lop,dl_t rop)38 ldivide(dl_t lop, dl_t rop)
39 {
40 int cnt;
41 dl_t ans;
42 dl_t tmp;
43 dl_t div;
44
45 if (lsign(lop))
46 lop = lsub(lzero, lop);
47 if (lsign(rop))
48 rop = lsub(lzero, rop);
49
50 ans = lzero;
51 div = lzero;
52
53 for (cnt = 0; cnt < 63; cnt++) {
54 div = lshiftl(div, 1);
55 lop = lshiftl(lop, 1);
56 if (lsign(lop))
57 div.dl_lop |= 1;
58 tmp = lsub(div, rop);
59 ans = lshiftl(ans, 1);
60 if (lsign(tmp) == 0) {
61 ans.dl_lop |= 1;
62 div = tmp;
63 }
64 }
65
66 return (ans);
67 }
68