/usr/include/root/RooGaussModel.h is in libroot-roofit-dev 5.34.00-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | /*****************************************************************************
* Project: RooFit *
* Package: RooFitModels *
* File: $Id: RooGaussModel.h,v 1.21 2007/05/11 09:13:07 verkerke Exp $
* Authors: *
* WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
* DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
* *
* Copyright (c) 2000-2005, Regents of the University of California *
* and Stanford University. All rights reserved. *
* *
* 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) *
*****************************************************************************/
#ifndef ROO_GAUSS_MODEL
#define ROO_GAUSS_MODEL
#include "RooResolutionModel.h"
#include "RooRealProxy.h"
#include "RooComplex.h"
#include "RooMath.h"
class RooGaussModel : public RooResolutionModel {
public:
enum RooGaussBasis { noBasis=0, expBasisMinus= 1, expBasisSum= 2, expBasisPlus= 3,
sinBasisMinus=11, sinBasisSum=12, sinBasisPlus=13,
cosBasisMinus=21, cosBasisSum=22, cosBasisPlus=23,
linBasisPlus=33,
quadBasisPlus=43,
coshBasisMinus=51,coshBasisSum=52,coshBasisPlus=53,
sinhBasisMinus=61,sinhBasisSum=62,sinhBasisPlus=63};
enum BasisType { none=0, expBasis=1, sinBasis=2, cosBasis=3,
linBasis=4, quadBasis=5, coshBasis=6, sinhBasis=7 } ;
enum BasisSign { Both=0, Plus=+1, Minus=-1 } ;
// Constructors, assignment etc
inline RooGaussModel() : _flatSFInt(kFALSE), _asympInt(kFALSE) { }
RooGaussModel(const char *name, const char *title, RooRealVar& x,
RooAbsReal& mean, RooAbsReal& sigma) ;
RooGaussModel(const char *name, const char *title, RooRealVar& x,
RooAbsReal& mean, RooAbsReal& sigma, RooAbsReal& msSF) ;
RooGaussModel(const char *name, const char *title, RooRealVar& x,
RooAbsReal& mean, RooAbsReal& sigma, RooAbsReal& meanSF, RooAbsReal& sigmaSF) ;
RooGaussModel(const RooGaussModel& other, const char* name=0);
virtual TObject* clone(const char* newname) const { return new RooGaussModel(*this,newname) ; }
virtual ~RooGaussModel();
virtual Int_t basisCode(const char* name) const ;
virtual Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0) const ;
virtual Double_t analyticalIntegral(Int_t code, const char* rangeName) const ;
Int_t getGenerator(const RooArgSet& directVars, RooArgSet &generateVars, Bool_t staticInitOK=kTRUE) const;
void generateEvent(Int_t code);
void advertiseFlatScaleFactorIntegral(Bool_t flag) { _flatSFInt = flag ; }
void advertiseAymptoticIntegral(Bool_t flag) { _asympInt = flag ; } // added FMV,07/24/03
protected:
virtual Double_t evaluate() const ;
RooComplex evalCerfApprox(Double_t swt, Double_t u, Double_t c) const ;
// Calculate exp(-u^2) cwerf(swt*c + i(u+c)), taking care of numerical instabilities
inline RooComplex evalCerf(Double_t swt, Double_t u, Double_t c) const {
RooComplex z(swt*c,u+c);
return (z.im()>-4.0) ? RooMath::FastComplexErrFunc(z)*exp(-u*u) : evalCerfApprox(swt,u,c) ;
}
// Calculate Re(exp(-u^2) cwerf(swt*c + i(u+c))), taking care of numerical instabilities
inline Double_t evalCerfRe(Double_t swt, Double_t u, Double_t c) const {
RooComplex z(swt*c,u+c);
return (z.im()>-4.0) ? RooMath::FastComplexErrFuncRe(z)*exp(-u*u) : evalCerfApprox(swt,u,c).re() ;
}
// Calculate Im(exp(-u^2) cwerf(swt*c + i(u+c))), taking care of numerical instabilities
inline Double_t evalCerfIm(Double_t swt, Double_t u, Double_t c) const {
RooComplex z(swt*c,u+c);
return (z.im()>-4.0) ? RooMath::FastComplexErrFuncIm(z)*exp(-u*u) : evalCerfApprox(swt,u,c).im() ;
}
// Calculate common normalization factors
RooComplex evalCerfInt(Double_t sign, Double_t wt, Double_t tau, Double_t umin, Double_t umax, Double_t c) const ;
Bool_t _flatSFInt ;
Bool_t _asympInt ; // added FMV,07/24/03
RooRealProxy mean ;
RooRealProxy sigma ;
RooRealProxy msf ;
RooRealProxy ssf ;
ClassDef(RooGaussModel,1) // Gaussian Resolution Model
};
#endif
|