1 /* @(#)wwalloc.c 8.1 (Berkeley) 6/6/93 */ 2 /* $NetBSD: wwalloc.c,v 1.6 2003/08/07 11:17:36 agc 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 #include <stdlib.h> 37 #include "ww.h" 38 39 char ** 40 wwalloc(int row, int col, int nrow, int ncol, int size) 41 { 42 char *p, **pp; 43 int i; 44 45 /* fast, call malloc only once */ 46 pp = (char **) 47 malloc((unsigned) sizeof (char **) * nrow + size * nrow * ncol); 48 if (pp == NULL) { 49 wwerrno = WWE_NOMEM; 50 return 0; 51 } 52 p = (char *)&pp[nrow]; 53 col *= size; 54 size /= sizeof (char); /* paranoid */ 55 size *= ncol; 56 for (i = 0; i < nrow; i++) { 57 pp[i] = p - col; 58 p += size; 59 } 60 return pp - row; 61 } 62 63 void 64 wwfree(char **p, int row) 65 { 66 free((char *)(p + row)); 67 } 68