EMPTY
#define EMPTY if (stkerr != 0) {PRINT_MESSAGE; continue; }
#define EMPTY "** empty **"
EMPTY, /* d D g G h H l n N p P q x = \0 */
#define EMPTY 1
#define EMPTY 0
#define EMPTY strings[EMPTY_S]
#define EMPTY strings[EMPTY_S]
#define EMPTY(list) ((list).head == NULL)
#define EMPTY '\0'
EMPTY, NEGATIVE, ZERO, POSITIVE, NUM_BUCKETS
enum states { EMPTY, SOFTSTATE, REGSMAP, MUTEXES, ADDINTR,