/* 
 * File:   pi_serial.c
 * Author: nd159473 (Nickolay Dalmatov, Sun Microsystems)
 * modified by Dmitry V Irtegov, NSU
 *
 * Created on March 20, 2007, 6:33 PM
 *
 */

#include <stdio.h>
#include <stdlib.h>

/*
 * 
 */

#define num_steps 200000000

int
main(int argc, char** argv) {
    
    double pi = 0;
    int i;
    
    for (i = 0; i < num_steps ; i++) {
         
         pi += 1.0/(i*4.0 + 1.0);
         pi -= 1.0/(i*4.0 + 3.0);
    }
    
    pi = pi * 4.0;
    printf("pi done - %.15g \n", pi);    
    
    return (EXIT_SUCCESS);
}