1 /*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Edward Wang at The University of California, Berkeley.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37 #ifndef lint
38 static char sccsid[] = "@(#)wwalloc.c 8.1 (Berkeley) 6/6/93";
39 static char rcsid[] =
40 "$FreeBSD: head/usr.bin/window/wwalloc.c 76736 2001-05-17 09:38:49Z obrien $";
41 #endif /* not lint */
42
43 #include <stdlib.h>
44 #include "ww.h"
45
46 char **
wwalloc(row,col,nrow,ncol,size)47 wwalloc(row, col, nrow, ncol, size)
48 {
49 register char *p, **pp;
50 register int i;
51
52 /* fast, call malloc only once */
53 pp = (char **)
54 malloc((unsigned) sizeof (char **) * nrow + size * nrow * ncol);
55 if (pp == 0) {
56 wwerrno = WWE_NOMEM;
57 return 0;
58 }
59 p = (char *)&pp[nrow];
60 col *= size;
61 size /= sizeof (char); /* paranoid */
62 size *= ncol;
63 for (i = 0; i < nrow; i++) {
64 pp[i] = p - col;
65 p += size;
66 }
67 return pp - row;
68 }
69
wwfree(p,row)70 wwfree(p, row)
71 register char **p;
72 {
73 free((char *)(p + row));
74 }
75