/********************************************************************
    File:          producer_consumer.h
    Description:   Computes the integral of a function
                   in parallel with pthreads. 
                                                                            
    Author:        Dana Vrajitoru                          
    Organization:  IUSB                                    
    Date:          August 2020
*********************************************************************/

#ifndef INTEGRAL_H
#define INTEGRAL_H

#include <pthread.h>


// Creates the threads calling the compute_integral function, and to
// each of them it passes the value of i converted to a pointer to
// serve as id number.
void create_threads(pthread_t *threads, int nr_threads);

// Joins all of the threads so that the program doesn't end before
// they have finished the work.
void synchronise(pthread_t *threads, int nr_threads);

// Inputs the boundaries of the interval, the number of threads, and
// the total number of divisions. It returns the number of threads.
int input_data();

// The function computing the integral. To be used to create threads
void *compute_integral(void *arg); 

// A function we can compute the integral for
// integral from 1 to x of 1/t dt = ln(x)
float F(float x);

// Output the computed integral
void output_results();

#endif