AtStudentDistribution.h

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#ifndef ATSTUDENTDISTRIBUTION_H
#define ATSTUDENTDISTRIBUTION_H
 
#include "AtParameterDistribution.h"
 
#include <random>
namespace MCFitter {
 
class AtStudentDistribution : public AtParameterDistribution {
 
protected:
   std::student_t_distribution<> fDistro{1};
 
public:
   AtStudentDistribution(double mean, double spread, double seed = 0);
   virtual ~AtStudentDistribution() = default;
 
   double GetDoF() const { return fDistro.n(); }
   void SetDoF(double dof) { fDistro = std::student_t_distribution<>(dof); }
 
   void TruncateSpace() override { fSpread *= .5; }
 
protected:
   double SampleSpread() override;
};
 
} // namespace MCFitter
 
#endif // ATSTUDENTDISTRIBUTION_H