m4: Sync with FreeBSD.
[dragonfly.git] / usr.bin / m4 / stdd.h
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4afad3d8 1/* $OpenBSD: stdd.h,v 1.6 2010/09/07 19:58:09 marco Exp $ */
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2/* $NetBSD: stdd.h,v 1.2 1995/09/28 05:37:50 tls Exp $ */
3
4/*-
5 * Copyright (c) 1991, 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 * Ozan Yigit at York University.
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.
4afad3d8 19 * 3. Neither the name of the University nor the names of its contributors
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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 * @(#)stdd.h 8.1 (Berkeley) 6/6/93
4afad3d8 36 * $FreeBSD: src/usr.bin/m4/stdd.h,v 1.7 2012/11/17 01:54:24 svnexp Exp $
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37 */
38
39/*
40 * standard defines
41 */
42
43#define max(a,b) ((a) > (b)? (a): (b))
44#define min(a,b) ((a) < (b)? (a): (b))
45
46#define iswhite(c) ((c) == ' ' || (c) == '\t')
47
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48/*
49 * STREQ is an optimised strcmp(a,b)==0
50 * STREQN is an optimised strncmp(a,b,n)==0; assumes n > 0
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51 */
52#define STREQ(a, b) ((a)[0] == (b)[0] && strcmp(a, b) == 0)
53#define STREQN(a, b, n) ((a)[0] == (b)[0] && strncmp(a, b, n) == 0)
54
55#define YES 1
56#define NO 0