usr.bin/m4/stdd.h

   1 /*      $OpenBSD: stdd.h,v 1.6 2010/09/07 19:58:09 marco Exp $  */
   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.
  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  *      @(#)stdd.h      8.1 (Berkeley) 6/6/93
  36  * $FreeBSD: src/usr.bin/m4/stdd.h,v 1.7 2012/11/17 01:54:24 svnexp Exp $
  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
  48 /*
  49  * STREQ is an optimised strcmp(a,b)==0
  50  * STREQN is an optimised strncmp(a,b,n)==0; assumes n > 0
  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