usr/src/usr.lib/sendmail/include/useful.h

/*
**  USEFUL.H -- Some useful stuff.
**
**      @(#)useful.h    4.1             7/25/83
*/

# ifndef makedev
# include <sys/types.h>
# endif

/* support for bool type */
typedef char    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 max

/* 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
# define SCCSID(arg)    static char SccsId[] = "arg";
# else lint
# 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 char     *sprintf();
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