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[unix-history] / usr / src / usr.sbin / sendmail / src / useful.h

/*
**  USEFUL.H -- Some useful stuff.
**
**      @(#)useful.h    3.2     %G%
*/

# define bool   char
# define TRUE   1
# define FALSE  0

# ifndef NULL
# define NULL   0
# endif NULL

# define setbit(bit, word)      (word |= bit)
# define clrbit(bit, word)      (word &= ~bit)
# define bitset(bit, word)      ((word) & (bit))

/* define the types of some common functions */
extern char     *strcpy();
extern char     *strcat();
extern char     *malloc();
extern char     *index(), *rindex();
extern int      errno;
extern char     *sprintf();
extern long     time();
extern char     *ctime();
# ifndef V6
extern char     *getenv();
# endif