class ChiSquaredDistribution extends AbstractRealDistribution {

    public double density(double x) {
        return gamma.density(x);
    }

    public  ChiSquaredDistribution(double degreesOfFreedom);
    public  ChiSquaredDistribution(double degreesOfFreedom,
                                  double inverseCumAccuracy);
    public  ChiSquaredDistribution(RandomGenerator rng, double degreesOfFreedom);
    public  ChiSquaredDistribution(RandomGenerator rng,
                                  double degreesOfFreedom,
                                  double inverseCumAccuracy);

}