-/* Allocate SIZE bytes of memory. */
-
-extern void *mmalloc(void *md, size_t size);
-
-/* Re-allocate the previously allocated block in void*, making the new block
- SIZE bytes long. */
-
-extern void *mrealloc(void *md, void *ptr, size_t size);
-
-/* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */
-
-extern void *mcalloc(void *md, size_t nmemb, size_t size);
-
-/* Free a block allocated by `mmalloc', `mrealloc' or `mcalloc'. */