#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 - %f \n", pi);
return (EXIT_SUCCESS);
}