2 /* include for skiplists */
5 void *skip_new(int cmpfn(), void freefn(), void errfn());
6 char skip_insert(void *list, void *entry);
7 char skip_delete(void *list, void *key);
8 void *skip_search(void *list, void *key);
9 void *skip_first(void *list);
10 void *skip_next(void *last);
11 void skip_free(void *);