projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 15637ed4 | 1 | /* |
| 78ed81a3 | 2 | * Copyright (c) 1988, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. | |
| 15637ed4 RG |
4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 32 | * | |
| 78ed81a3 | 33 | * @(#)useful.h 8.1 (Berkeley) 6/7/93 |
| 15637ed4 RG |
34 | */ |
| 35 | ||
| 36 | # include <sys/types.h> | |
| 37 | ||
| 38 | /* support for bool type */ | |
| 39 | typedef char bool; | |
| 40 | # define TRUE 1 | |
| 41 | # define FALSE 0 | |
| 42 | ||
| 43 | # ifndef NULL | |
| 44 | # define NULL 0 | |
| 78ed81a3 | 45 | # endif /* NULL */ |
| 15637ed4 RG |
46 | |
| 47 | /* bit hacking */ | |
| 48 | # define bitset(bit, word) (((word) & (bit)) != 0) | |
| 49 | ||
| 50 | /* some simple functions */ | |
| 51 | # ifndef max | |
| 52 | # define max(a, b) ((a) > (b) ? (a) : (b)) | |
| 53 | # define min(a, b) ((a) < (b) ? (a) : (b)) | |
| 78ed81a3 | 54 | # endif |
| 15637ed4 RG |
55 | |
| 56 | /* assertions */ | |
| 57 | # ifndef NASSERT | |
| 58 | # define ASSERT(expr, msg, parm)\ | |
| 59 | if (!(expr))\ | |
| 60 | {\ | |
| 61 | fprintf(stderr, "assertion botch: %s:%d: ", __FILE__, __LINE__);\ | |
| 62 | fprintf(stderr, msg, parm);\ | |
| 63 | } | |
| 78ed81a3 | 64 | # else /* NASSERT */ |
| 15637ed4 | 65 | # define ASSERT(expr, msg, parm) |
| 78ed81a3 | 66 | # endif /* NASSERT */ |
| 15637ed4 RG |
67 | |
| 68 | /* sccs id's */ | |
| 69 | # ifndef lint | |
| 70 | # define SCCSID(arg) static char SccsId[] = "arg"; | |
| 78ed81a3 | 71 | # else |
| 15637ed4 | 72 | # define SCCSID(arg) |
| 78ed81a3 | 73 | # endif |