discretedistributionfast.h

#ifndef DISCRETEDISTRIBUTIONFAST_H

#define DISCRETEDISTRIBUTIONFAST_H

#include "probabilitydistribution.h"
#include <vector>

class DiscreteDistributionFast : public ProbabilityDistribution
{
public:
        DiscreteDistributionFast(double xMin, double xMax, const std::vector<double> &probValues, 
                                 bool floor, GslRandomNumberGenerator *pRndGen);
        ~DiscreteDistributionFast();

        double pickNumber() const;
private:
        static int getLargerPowerOfTwo(const int s0, int *pLevels);

        std::vector<std::vector<double> > m_probLevels;
        double m_totalSum, m_xMin, m_binSize;
        bool m_floor;
};

#endif // DISCRETEDISTRIBUTIONFAST_H