1 /* $OpenBSD: wwalloc.c,v 1.6 2003/06/03 02:56:23 millert Exp $ */
2 /* $NetBSD: wwalloc.c,v 1.3 1995/09/28 10:35:10 tls Exp $ */
3
4 /*
5 * Copyright (c) 1983, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Edward Wang at The University of California, Berkeley.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #ifndef lint
37 #if 0
38 static char sccsid[] = "@(#)wwalloc.c 8.1 (Berkeley) 6/6/93";
39 #else
40 static char rcsid[] = "$OpenBSD: wwalloc.c,v 1.6 2003/06/03 02:56:23 millert Exp $";
41 #endif
42 #endif /* not lint */
43
44 #include <stdlib.h>
45 #include "ww.h"
46
47 char **
wwalloc(row,col,nrow,ncol,size)48 wwalloc(row, col, nrow, ncol, size)
49 int row, col, nrow, ncol;
50 size_t size;
51 {
52 char *p, **pp;
53 int i;
54
55 /* fast, call malloc only once */
56 pp = (char **)
57 malloc(sizeof (char **) * nrow + size * nrow * ncol);
58 if (pp == 0) {
59 wwerrno = WWE_NOMEM;
60 return 0;
61 }
62 p = (char *)&pp[nrow];
63 col *= size;
64 size /= sizeof (char); /* paranoid */
65 size *= ncol;
66 for (i = 0; i < nrow; i++) {
67 pp[i] = p - col;
68 p += size;
69 }
70 return pp - row;
71 }
72
wwfree(p,row)73 wwfree(p, row)
74 char **p;
75 {
76 free((char *)(p + row));
77 }
78