par_map.h

/**
 * Parallel Map Lab
 * CS 241 - Fall 2016
 */
#ifndef __CS241_PAR_MAP_H__
#define __CS241_PAR_MAP_H__

#include "mappers.h"

/**
 * multi-threaded solution to map().
 *
 * This method takes in a `list` of doubles and returns a list of doubles where
 * every element has had `map_func` applied to it, but does so with
 * `num_threads` threads.
 *
 * Note: that this function DOES NOT modify the original list.
 *
 * `list`- is a pointer to the begining of an array of doubles.
 * `length` - is how many doubles are in the array of doubles.
 * `map_func` - is the mapper used to transform a double to another double and
 * is applied to every element of the list.
 * `num_threads` - is how many threads (in addition to the main thread) are used
 * in the parallelization.
 */
double *par_map(double *list, size_t length, mapper map_func,
                size_t num_threads);
#endif /* __CS241_PAR_MAP_H__ */