src/main/cpp/numerics4cpp/statistics/distribution/chisquared.h

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#ifndef _NUMERICS4CPP_STATISTICS_DISTRIBUTION_CHISQUARED_H_
#define _NUMERICS4CPP_STATISTICS_DISTRIBUTION_CHISQUARED_H_

#include "gamma.h"

NUM_NAMESPACE_BEGIN

class chi_squared_distribution : public continuous_distribution {

public:
        chi_squared_distribution(double df = 1.0);

        double cdf(double x) const;
        
        double inverse_cdf(double p) const;

        double degrees_of_freedom() const;
        
        void degrees_of_freedom(double df);
                        
private:
        gamma_distribution _gamma;
};

NUM_NAMESPACE_END

#endif

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