1 #ifndef ALIPHOSFASTALTROFIT_H
2 #define ALIPHOSFASTALTROFIT_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
7 /* History of svn commits
12 //_________________________________________________________________________
13 // Procedure of fast altro fitting
15 //*-- Author: Aleksei Pavlinov; IHEP, Protvino, Russia
19 // --- ROOT system ---
21 class AliPHOSFastAltroFit : public TNamed {
25 AliPHOSFastAltroFit();
26 AliPHOSFastAltroFit(const char* name, const char* title, const Double_t tau);
27 virtual ~AliPHOSFastAltroFit();
29 void SetTau(const Double_t tau) {fTau = tau;}
31 void FastFit(Int_t* t, Int_t* y, Int_t n, Double_t sig, Double_t tau, Double_t ped);
33 void GetFitResult(Double_t &, Double_t &eamp, Double_t &t0, Double_t &et0, Double_t &chi2,
35 Double_t GetSig() const {return fSig;}
36 Double_t GetTau() const {return fTau;}
37 Double_t GetN() const {return fN;}
38 Double_t GetAmp() const {return fAmp;}
39 Double_t GetAmpErr() const {return fAmpErr;}
40 Double_t GetT0() const {return fT0;}
41 Double_t GetT0Err() const {return fT0Err;}
42 Double_t GetChi2() const {return fChi2;}
43 Double_t GetNDF() const {return fNDF;}
45 static void DeductPedestal(Int_t* t, Int_t* y, Int_t n, Double_t ped, Double_t tau,
46 Double_t* tn, Double_t* yn, Int_t &nn);
47 static void FastFit(Double_t* t, Double_t* y, Int_t n, Double_t sig, Double_t tau,
48 Double_t &, Double_t &eamp, Double_t &t0, Double_t &et0, Double_t &chi2);
49 static Bool_t QuadraticRoots(Double_t a, Double_t b, Double_t c, Double_t &x1, Double_t &x2);
50 static void Amplitude(Double_t* t, Double_t* y, Int_t n, Double_t sig, Double_t tau,
51 Double_t t0, Double_t &, Double_t &chi2);
52 static void CalculateParsErrors(Double_t* t, Double_t* y, Int_t n, Double_t sig, Double_t tau,
53 Double_t &, Double_t &t0, Double_t &eamp, Double_t &et0);
57 Double_t fTau; // filter time response
58 Double_t fN; // order of function (equal 2)
67 ClassDef(AliPHOSFastAltroFit,1) // Class for fast altro fitting
70 #endif // ALIPHOSFASTALTROFIT_H