ranv2.h

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#ifndef ns_self_similar_h
#define ns_self_similar_h

#include "ranvar.h"
#include "rng.h"
#include "trafgen.h"

class GammaRandomVariable : public RandomVariable {
 public:
	virtual double value();
	GammaRandomVariable();
	GammaRandomVariable(double avg_, double stdev_);
        double* avgp() { return &avg_; };
	virtual inline double avg() { return avg_; };
	void setavg(double d) { avg_ = d; };
        double* stdevp() { return &stdev_; };
	virtual inline double stdev() { return stdev_; };
	void setstdev(double d) { stdev_ = d; };
 private:
	double avg_;
        double stdev_;
        double Gamma (double beta, double alpha);
        double erlang (double mean, int rep);
};

class NegBinomRandomVariable : public RandomVariable {
 public:
	virtual double value();
	NegBinomRandomVariable();
	NegBinomRandomVariable(double avg_, int sparm_);
        double* avgp() { return &avg_; };
	virtual inline double avg() { return avg_; };
	void setavg(double d) { avg_ = d; };
        int* sparmp() { return &sparm_; };
	virtual inline int sparm() { return sparm_; };
	void setsparm(int d) { sparm_ = d; };
 private:
	double avg_;
        int sparm_;
        double negbinom (int s, double p);
        double geometric0 (double p);
};

#endif