RooNumRunningInt.h

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/*****************************************************************************
 * Project: RooFit                                                           *
 *                                                                           *
 * Copyright (c) 2000-2005, Regents of the University of California          *
 *                          and Stanford University. All rights reserved.    *
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 * Redistribution and use in source and binary forms,                        *
 * with or without modification, are permitted according to the terms        *
 * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
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#ifndef ROONUMRUNNINGINT
#define ROONUMRUNNINGINT
 
#include "RooAbsCachedReal.h"
#include "RooRealProxy.h"
#include "RooAbsReal.h"
 
#include <string>
#include <vector>
 
class RooNumRunningInt : public RooAbsCachedReal {
public:
  RooNumRunningInt(const char *name, const char *title, RooAbsReal& _func, RooRealVar& _x, const char* binningName="cache");
  RooNumRunningInt(const RooNumRunningInt& other, const char* name=nullptr) ;
  TObject *clone(const char *newname = nullptr) const override { return new RooNumRunningInt(*this, newname); }
 
  protected:
  class RICacheElem: public FuncCacheElem {
  public:
    RICacheElem(const RooNumRunningInt& ri, const RooArgSet* nset) ;
    RooArgList containedArgs(Action) override ;
    void calculate(bool cdfmode) ;
    void addRange(Int_t ixlo, Int_t ixhi, Int_t nbins) ;
    void addPoint(Int_t ix) ;
 
    RooNumRunningInt* _self ;
    std::vector<double> _ax ;
    std::vector<double> _ay ;
    RooArgSet _xx;
  } ;
 
  friend class RICacheElem ;
  const char* binningName() const override { return _binningName.c_str() ; }
  FuncCacheElem* createCache(const RooArgSet* nset) const override ;
  const char* inputBaseName() const override ;
  RooFit::OwningPtr<RooArgSet> actualObservables(const RooArgSet& nset) const override ;
  RooFit::OwningPtr<RooArgSet> actualParameters(const RooArgSet& nset) const override ;
  void fillCacheObject(FuncCacheElem& cacheFunc) const override ;
  double evaluate() const override ;
 
  const char* payloadUniqueSuffix() const override { return func.arg().aggregateCacheUniqueSuffix() ; }
 
  RooRealProxy func ; ///< Proxy to functions whose running integral is calculated
  RooRealProxy x   ; ///< Integrated observable
  std::string _binningName ; ///< Name of binning to be used for cache histogram
 
private:
 
  ClassDefOverride(RooNumRunningInt,1) // Numeric calculator for running integral of a given function
 
};
 
#endif