Taylor seried to calculate pi in fixed point

pi_calc.cpp

#include <stdint.h>


int main() {

  const int32_t fx = 1048576;
  int32_t z = 4 * fx;
  int32_t j = -1;

  for (int32_t i = 3; i < 4096; i += 2) {
    z += j * (4 * fx) / i;
    j = j * -1;
  }

  const float pi = float(z) / float(1 * fx);

  return 0;
}