chiSquareCDF function

double chiSquareCDF(
  1. double x,
  2. int k
)

Implementation

double chiSquareCDF(double x, int k) {
  if (x <= 0) return 0.0;
  if (k <= 0) return double.nan;
  return _lowerRegularizedGamma(k / 2.0, x / 2.0);
}