1/* $NetBSD: defs.h,v 1.6 2005/11/25 08:00:18 agc Exp $ */
2
3/*
4 * Copyright (c) 1999 Alistair G. Crooks.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote
15 *    products derived from this software without specific prior written
16 *    permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
19 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
24 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
27 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30#ifndef DEFS_H_
31#define DEFS_H_
32
33#define NEWARRAY(type,ptr,size,action) do {				\
34	if ((ptr = (type *) calloc(sizeof(type), size)) == NULL) { 	\
35		warn("can't allocate %ld bytes", (long)(size * sizeof(type))); \
36		action;							\
37	}								\
38} while( /* CONSTCOND */ 0)
39
40#define RENEW(type,ptr,size,action) do {				\
41	if ((ptr = (type *) realloc(ptr, sizeof(type) * size)) == NULL) { \
42		warn("can't realloc %ld bytes", (long)(size * sizeof(type))); \
43		action;							\
44	}								\
45} while( /* CONSTCOND */ 0)
46
47#define NEW(type, ptr, action)	NEWARRAY(type, ptr, 1, action)
48
49#define FREE(ptr)	(void) free(ptr)
50
51#ifndef MIN
52#define MIN(a,b)	(((a) < (b)) ? (a) : (b))
53#endif
54
55#ifndef MAX
56#define MAX(a,b)	(((a) > (b)) ? (a) : (b))
57#endif
58
59#endif /* !DEFS_H_ */
60