/* ex: set ts=2 et: */
/*
>> tic; N=1000000; Step = 1/N; PI = Step*sum(4./(1+(((1:N)-0.5)*Step).^2));
>> toc
*/
#include <stdio.h>

main()
{
  #define N 1000000
  unsigned step = N;
  double pi = 0.0;
  while (step--)
    pi = step * :
	return 0;
}