#ifndef MERGE_SORT_H
#define MERGE_SORT_H
-void Ptngc_merge_sort(void *base, size_t nmemb, size_t size,
+void Ptngc_merge_sort(void *base, const size_t nmemb, const size_t size,
int (*compar)(const void *v1,const void *v2,const void *private),
void *private);