1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*	Copyright (c) 1988 AT&T	*/
23/*	  All Rights Reserved  	*/
24
25
26#ifndef	_MACROS_H
27#define	_MACROS_H
28
29#pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.3.1.7 */
30
31#include <sys/types.h>
32#include <sys/stat.h>
33
34#ifdef	__cplusplus
35extern "C" {
36#endif
37
38/*
39 *	numeric() is useful in while's, if's, etc., but don't use *p++
40 *	max() and min() depend on the types of the operands
41 *	abs() is absolute value
42 */
43#define	numeric(c)		((c) >= '0' && (c) <= '9')
44#define	max(a, b) 		((a) < (b) ? (b) : (a))
45#define	min(a, b) 		((a) > (b) ? (b) : (a))
46#define	abs(x)			((x) >= 0 ? (x) : -(x))
47
48#define	compare(str1, str2)	strcmp((str1), (str2))
49#define	equal(str1, str2)	(strcmp((str1), (str2)) == 0)
50#define	length(str)		strlen(str)
51#define	size(str)		(strlen(str) + 1)
52
53/*
54 *	The global variable Statbuf is available for use as a stat(II)
55 *	structure.  Note that "stat.h" is included here and should
56 *	not be included elsewhere.
57 *	Exists(file) returns 0 if the file does not exist;
58 *	the flags word if it does (the flags word is always non-zero).
59 */
60
61extern struct stat Statbuf;
62#define	exists(file)		(stat(file, &Statbuf) < 0 ? 0 : Statbuf.st_mode)
63
64/*
65 *	SAVE() and RSTR() use local data in nested blocks.
66 *	Make sure that they nest cleanly.
67 */
68#define	SAVE(name, place)	{ int place = name;
69#define	RSTR(name, place)	name = place; }
70
71/*
72 *	Use: DEBUG(sum,d) which becomes fprintf(stderr,"sum = %d\n",sum)
73 *
74 *	Note:	Sccsid[] strings are still supported but not the prefered
75 *		method of labeling files.  Use #ident.
76 */
77#ifdef	__STDC__
78#define	DEBUG(var, type)	fprintf(stderr, #var "= %" #type "\n", var)
79#define	SCCSID(arg)		static char Sccsid[] = #arg
80#else
81#define	DEBUG(var, type)	fprintf(stderr, "var = %type\n", var)
82#define	SCCSID(arg)		static char Sccsid[] = "arg"
83#endif
84
85/*
86 *	Use of ERRABORT() will cause libS.a internal
87 *	errors to cause aborts
88 */
89#define	ERRABORT()	_error() { abort(); }
90
91/*
92 *	Use of USXALLOC() is required to force all calls to alloc()
93 *	(e.g., from libS.a) to call xalloc().
94 */
95#define	NONBLANK(p)	while (*(p) == ' ' || *(p) == '\t') (p)++
96
97/*
98 *	A global null string.
99 */
100extern char	Null[1];
101
102/*
103 *	A global error message string.
104 */
105extern char	Error[128];
106
107#ifdef	__cplusplus
108}
109#endif
110
111#endif	/* _MACROS_H */
112