79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
/*
|
|
* Copyright (c) 1995, 1996 Eric P. Allman
|
|
* Copyright (c) 1988, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)useful.h 8.5 (Berkeley) 2/21/96
|
|
*/
|
|
|
|
# include <sys/types.h>
|
|
|
|
/* support for bool type */
|
|
typedef int bool;
|
|
# define TRUE 1
|
|
# define FALSE 0
|
|
|
|
# ifndef NULL
|
|
# define NULL 0
|
|
# endif /* NULL */
|
|
|
|
/* bit hacking */
|
|
# define bitset(bit, word) (((word) & (bit)) != 0)
|
|
|
|
/* some simple functions */
|
|
# ifndef max
|
|
# define max(a, b) ((a) > (b) ? (a) : (b))
|
|
# define min(a, b) ((a) < (b) ? (a) : (b))
|
|
# endif
|
|
|
|
/* assertions */
|
|
# ifndef NASSERT
|
|
# define ASSERT(expr, msg, parm)\
|
|
if (!(expr))\
|
|
{\
|
|
fprintf(stderr, "assertion botch: %s:%d: ", __FILE__, __LINE__);\
|
|
fprintf(stderr, msg, parm);\
|
|
}
|
|
# else /* NASSERT */
|
|
# define ASSERT(expr, msg, parm)
|
|
# endif /* NASSERT */
|
|
|
|
/* sccs id's */
|
|
# ifndef lint
|
|
# ifdef __STDC__
|
|
# define SCCSID(arg) static char SccsId[] = #arg;
|
|
# else
|
|
# define SCCSID(arg) static char SccsId[] = "arg";
|
|
# endif
|
|
# else
|
|
# define SCCSID(arg)
|
|
# endif
|