1164Seric /*
2164Seric **  USEFUL.H -- Some useful stuff.
3402Seric **
4*6281Seric **	@(#)useful.h	3.8		03/22/82
5164Seric */
6164Seric 
74148Seric # ifndef makedev
84148Seric # include <sys/types.h>
94148Seric # endif
104148Seric 
114148Seric /* support for bool type */
124148Seric typedef char	bool;
13164Seric # define TRUE	1
14164Seric # define FALSE	0
15164Seric 
16164Seric # ifndef NULL
17164Seric # define NULL	0
18164Seric # endif NULL
192975Seric 
204148Seric /* bit hacking */
212975Seric # define bitset(bit, word)	((word) & (bit))
224086Seric 
235196Seric /* assertions */
245196Seric # ifndef NASSERT
255196Seric # define ASSERT(expr, msg, parm)\
265196Seric 	if (!(expr))\
275196Seric 	{\
285196Seric 		fprintf(stderr, "assertion botch: %s:%d: ", __FILE__, __LINE__);\
295196Seric 		fprintf(stderr, msg, parm);\
305196Seric 	}
315196Seric # else NASSERT
325196Seric # define ASSERT(expr, msg, parm)
335196Seric # endif NASSERT
345196Seric 
355196Seric /* sccs id's */
365196Seric # ifndef lint
375196Seric # define SCCSID(arg)	static char SccsId[] = "arg";
385196Seric # else lint
395196Seric # define SCCSID(arg)
405196Seric # endif lint
415196Seric 
424086Seric /* define the types of some common functions */
435183Seric extern char	*strcpy(), *strncpy();
445183Seric extern char	*strcat(), *strncat();
454086Seric extern char	*malloc();
464086Seric extern char	*index(), *rindex();
474086Seric extern int	errno;
484086Seric extern char	*sprintf();
494835Seric extern time_t	time();
504086Seric extern char	*ctime();
514086Seric # ifndef V6
524086Seric extern char	*getenv();
53*6281Seric # endif V6
54*6281Seric # ifndef VMUNIX
554438Seric typedef char	*u_short;
564438Seric typedef long	u_long;
574438Seric typedef char	u_char;
584438Seric typedef int	void;
59*6281Seric # endif VMUNIX
60