AtParameterDistribution.h

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#ifndef ATPARAMETERDISTRIBUTION_H
#define ATPARAMETERDISTRIBUTION_H
 
#include <memory>
#include <random>
namespace MCFitter {
 
class AtParameterDistribution {
 
protected:
   double fMean{0};
   double fSpread{0};
   long fSeed;
   static thread_local std::unique_ptr<std::mt19937> fRand;
 
public:
   AtParameterDistribution(double mean, double spread, long seed = 0);
   virtual ~AtParameterDistribution() = default;
 
   double GetMean() const { return fMean; }
   double GetSpread() const { return fSpread; }
 
   void SetMean(double mean) { fMean = mean; }
   void SetSpread(double spread) { fSpread = spread; }
 
   double Sample();
 
   virtual void TruncateSpace() = 0;
 
protected:
   virtual double SampleSpread() = 0;
};
 
} // namespace MCFitter
 
#endif // ATPARAMETERDISTRIBUTION_H