1/*	$NetBSD: wwalloc.c,v 1.5 2002/06/14 01:06:57 wiz Exp $	*/
2
3/*
4 * Copyright (c) 1983, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Edward Wang at The University of California, Berkeley.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/cdefs.h>
36#ifndef lint
37#if 0
38static char sccsid[] = "@(#)wwalloc.c	8.1 (Berkeley) 6/6/93";
39#else
40__RCSID("$NetBSD: wwalloc.c,v 1.5 2002/06/14 01:06:57 wiz Exp $");
41#endif
42#endif /* not lint */
43
44#include <stdlib.h>
45#include "ww.h"
46
47char **
48wwalloc(int row, int col, int nrow, int ncol, int size)
49{
50	char *p, **pp;
51	int i;
52
53	/* fast, call malloc only once */
54	pp = (char **)
55		malloc((unsigned) sizeof (char **) * nrow + size * nrow * ncol);
56	if (pp == 0) {
57		wwerrno = WWE_NOMEM;
58		return 0;
59	}
60	p = (char *)&pp[nrow];
61	col *= size;
62	size /= sizeof (char);		/* paranoid */
63	size *= ncol;
64	for (i = 0; i < nrow; i++) {
65		pp[i] = p - col;
66		p += size;
67	}
68	return pp - row;
69}
70
71void
72wwfree(char **p, int row)
73{
74	free((char *)(p + row));
75}
76