/*
-** USEFUL.H -- Some useful stuff.
-**
-** @(#)useful.h 4.2 %G%
-*/
+ * 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 8.1 (Berkeley) 6/7/93
+ */
-# ifndef makedev
# include <sys/types.h>
-# endif
/* support for bool type */
typedef char bool;
# ifndef NULL
# define NULL 0
-# endif NULL
+# endif /* NULL */
/* bit hacking */
# define bitset(bit, word) (((word) & (bit)) != 0)
# ifndef max
# define max(a, b) ((a) > (b) ? (a) : (b))
# define min(a, b) ((a) < (b) ? (a) : (b))
-# endif max
+# endif
/* assertions */
# ifndef NASSERT
fprintf(stderr, "assertion botch: %s:%d: ", __FILE__, __LINE__);\
fprintf(stderr, msg, parm);\
}
-# else NASSERT
+# else /* NASSERT */
# define ASSERT(expr, msg, parm)
-# endif NASSERT
+# endif /* NASSERT */
/* sccs id's */
# ifndef lint
# define SCCSID(arg) static char SccsId[] = "arg";
-# else lint
+# else
# define SCCSID(arg)
-# endif lint
-
-/* define the types of some common functions */
-extern char *strcpy(), *strncpy();
-extern char *strcat(), *strncat();
-extern char *malloc();
-extern char *index(), *rindex();
-extern int errno;
-extern time_t time();
-extern char *ctime();
-# ifndef V6
-extern char *getenv();
-# endif V6
-# ifndef VMUNIX
-typedef unsigned short u_short;
-typedef long u_long;
-typedef char u_char;
-typedef int void;
-# endif VMUNIX
+# endif