GaussianDistribution.h

#ifndef GaussianDistribution_h
#define GaussianDistribution_h
 
/* SPDX-License-Identifier: CC0-1.0 */
 
#include "Statistics.h"
#include "IException.h"
#include "Constants.h"
 
namespace Isis {
  class GaussianDistribution : public Isis::Statistics {
    public:
      GaussianDistribution(const double mean = 0.0, const double standardDeviation = 1.0) ;
      ~GaussianDistribution() {};
 
      double Probability(const double value);
      double CumulativeDistribution(const double value);
      double InverseCumulativeDistribution(const double percent);
 
      inline double Mean() const {
        return p_mean;
      };
 
      inline double StandardDeviation() const {
        return p_stdev;
      };
 
    private:
      double p_mean;
      double p_stdev;
 
      // functions used for computing the ICDF
      double A(const double x);
      double B(const double x);
      double C(const double x);
      double D(const double x);
  };
};
 
#endif