d6e5f4a73268e1753c8578a7b153f7d818484078
   1#ifndef MERGESORT_H
   2#define MERGESORT_H
   3
   4void *mergesort(void *list,
   5                void *(*get_next_fn)(const void *),
   6                void (*set_next_fn)(void *, void *),
   7                int (*compare_fn)(const void *, const void *));
   8
   9#endif