/usr/include/root/RooPoisson.h is in libroot-roofit-dev 5.34.00-2.
This file is owned by root:root, with mode 0o644.
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* Project: RooFit *
* *
* Simple Poisson PDF
* author: Kyle Cranmer <cranmer@cern.ch>
* *
*****************************************************************************/
#ifndef ROOPOISSON
#define ROOPOISSON
#include "RooAbsPdf.h"
#include "RooRealProxy.h"
#include "RooCategoryProxy.h"
#include "RooAbsReal.h"
#include "RooAbsCategory.h"
class RooPoisson : public RooAbsPdf {
public:
RooPoisson() { _noRounding = kFALSE ; } ;
RooPoisson(const char *name, const char *title, RooAbsReal& _x, RooAbsReal& _mean, Bool_t noRounding=kFALSE);
RooPoisson(const RooPoisson& other, const char* name=0) ;
virtual TObject* clone(const char* newname) const { return new RooPoisson(*this,newname); }
inline virtual ~RooPoisson() { }
Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0) const ;
Double_t analyticalIntegral(Int_t code, const char* rangeName=0) const ;
Int_t getGenerator(const RooArgSet& directVars, RooArgSet &generateVars, Bool_t staticInitOK=kTRUE) const;
void generateEvent(Int_t code);
void setNoRounding(bool flag = kTRUE){_noRounding = flag;}
void protectNegativeMean(bool flag = kTRUE){_protectNegative = flag;}
protected:
RooRealProxy x ;
RooRealProxy mean ;
Bool_t _noRounding ;
Bool_t _protectNegative ;
Double_t evaluate() const ;
Double_t evaluate(Double_t k) const;
private:
ClassDef(RooPoisson,3) // A Poisson PDF
};
#endif
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