#ifndef __MS_H__
#define __MS_H__ 1

#include <sys/types.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/mman.h>
#include <string.h>
#include <sys/wait.h>

/* Merge arrays left and right into res array.
 */
void mymerge(int left[], size_t leftlen, int right[], size_t rightlen, int res[]);

/* Sort arr of size len using mergesort.
 */
int mymergesort(int arr[], size_t len);

/* Sort arr of size len using mergesort.
 * This function uses parallel processes for sorting.
 * It is implemented by forking new process for right
 * part of array. New child is forked only if 
 * current subarray len is less or equal than original
 * array len / cnt parameter.
 */
int mymergesortp(int arr[], size_t len, int cnt);

#endif