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Wunkolo/Pi_Approx.cpp

Created February 4, 2015 02:12
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Pi Approximation
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Pi_Approx.cpp
// Pi approximatization
//http://en.wikipedia.org/wiki/Leibniz_formula_for_%CF%80
//Slow conversion...
#include <stdint.h>
#include <stdio.h>
int main()
{
double result = 0;
for( size_t k = 1; k <= 1000000; k++ )
{
result += ((k & 1 ? 1.0 : -1.0) / double((k << 1) - 1));
}
result *= 4;
printf("%.10lf\n", result);
return 0;
}
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