cdf method

@override double cdf(double x)

Implementation

@override
double cdf(double x) {
  if (x < 0.0) {
    return 0.0;
  }
  if (x > trials) {
    return 1.0;
  }
  double result = 0.0;
  double end = x.floorToDouble() + 1;
  for (double i = 0.0; i < end; i++) {
    final double current = math.binomialCoefficient(trials, i);
    final double pows =
        (math.pow(prob, i) * math.pow(1 - prob, trials - i)).toDouble();
    result += current * pows;
  }
  return result;
}