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 /* 23 * Copyright 2014 Garrett D'Amore <garrett@damore.org> 24 */ 25 /* Copyright (c) 1988 AT&T */ 26 /* All Rights Reserved */ 27 28 29 #ifndef _MACROS_H 30 #define _MACROS_H 31 32 #include <sys/types.h> 33 #include <sys/stat.h> 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 /* 40 * numeric() is useful in while's, if's, etc., but don't use *p++ 41 * max() and min() depend on the types of the operands 42 * abs() is absolute value 43 */ 44 #define numeric(c) ((c) >= '0' && (c) <= '9') 45 #define max(a, b) ((a) < (b) ? (b) : (a)) 46 #define min(a, b) ((a) > (b) ? (b) : (a)) 47 #define abs(x) ((x) >= 0 ? (x) : -(x)) 48 49 #define compare(str1, str2) strcmp((str1), (str2)) 50 #define equal(str1, str2) (strcmp((str1), (str2)) == 0) 51 #define length(str) strlen(str) 52 #define size(str) (strlen(str) + 1) 53 54 /* 55 * The global variable Statbuf is available for use as a stat(II) 56 * structure. Note that "stat.h" is included here and should 57 * not be included elsewhere. 58 * Exists(file) returns 0 if the file does not exist; 59 * the flags word if it does (the flags word is always non-zero). 60 */ 61 62 extern struct stat Statbuf; 63 #define exists(file) (stat(file, &Statbuf) < 0 ? 0 : Statbuf.st_mode) 64 65 /* 66 * SAVE() and RSTR() use local data in nested blocks. 67 * Make sure that they nest cleanly. 68 */ 69 #define SAVE(name, place) { int place = name; 70 #define RSTR(name, place) name = place; } 71 72 /* 73 * Use: DEBUG(sum,d) which becomes fprintf(stderr,"sum = %d\n",sum) 74 */ 75 #define DEBUG(var, type) fprintf(stderr, #var "= %" #type "\n", var) 76 77 /* 78 * Use of ERRABORT() will cause libS.a internal 79 * errors to cause aborts 80 */ 81 #define ERRABORT() _error() { abort(); } 82 83 /* 84 * Use of USXALLOC() is required to force all calls to alloc() 85 * (e.g., from libS.a) to call xalloc(). 86 */ 87 #define NONBLANK(p) while (*(p) == ' ' || *(p) == '\t') (p)++ 88 89 /* 90 * A global null string. 91 */ 92 extern char Null[1]; 93 94 /* 95 * A global error message string. 96 */ 97 extern char Error[128]; 98 99 #ifdef __cplusplus 100 } 101 #endif 102 103 #endif /* _MACROS_H */ 104