#ifndef ALIDIELECTRONSIGNALFUNC_H
#define ALIDIELECTRONSIGNALFUNC_H
#include <TVectorT.h>
#include <TString.h>
#include <TH1F.h>
#include "AliDielectronSignalExt.h"
class AliDielectronSignalFunc : public AliDielectronSignalExt {
public:
AliDielectronSignalFunc();
AliDielectronSignalFunc(const char*name, const char* title);
AliDielectronSignalFunc(const AliDielectronSignalFunc &c);
AliDielectronSignalFunc &operator=(const AliDielectronSignalFunc &c);
virtual ~AliDielectronSignalFunc();
virtual void Process(TObjArray * const arrhist);
void ProcessFit(TObjArray * const arrhist);
void ProcessFitLS(TObjArray * const arrhist);
void ProcessFitEM(TObjArray * const arrhist);
void SetUseIntegral(Bool_t flag=kTRUE) {fUseIntegral = flag;};
void SetFunctions(TF1 * const combined, TF1 * const sig=0, TF1 * const back=0, Int_t parM=1, Int_t parMres=2);
void CombineFunc(TF1 * const peak=0, TF1 * const bgnd=0);
void SetFitOption(const char* opt) {
fFitOpt=opt;
fFitOpt.ToLower();
if(!fFitOpt.Contains("s")) fFitOpt += "s";
}
void SetDefaults(Int_t type);
TF1* GetSignalFunction() const { return fFuncSignal; }
TF1* GetBackgroundFunction() const { return fFuncBackground; }
TF1* GetCombinedFunction() const { return fFuncSigBack; }
Int_t GetDof() const { return fDof; }
Double_t GetChi2Dof() const { return fChi2Dof; }
virtual void Draw(const Option_t* option = "");
static Double_t PeakFunMC(const Double_t *x, const Double_t *par);
static Double_t PeakFunCB(const Double_t *x, const Double_t *par);
static Double_t PeakFunGaus(const Double_t *x, const Double_t *par);
protected:
static Double_t PeakBgndFun(const Double_t *x, const Double_t *par);
static TF1 *fFuncSignal;
static TF1 *fFuncBackground;
TF1 *fFuncSigBack;
Int_t fParMass;
Int_t fParMassWidth;
TString fFitOpt;
Bool_t fUseIntegral;
Int_t fDof;
Double_t fChi2Dof;
static Int_t fNparPeak;
static Int_t fNparBgnd;
ClassDef(AliDielectronSignalFunc,3)
};
#endif
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