ROOT_528-00b_version: include/RooGaussian.h Source File

00001 /*****************************************************************************
00002  * Project: RooFit                                                           *
00003  * Package: RooFitModels                                                     *
00004  *    File: $Id: RooGaussian.h,v 1.16 2007/07/12 20:30:49 wouter Exp $
00005  * Authors:                                                                  *
00006  *   WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu       *
00007  *   DK, David Kirkby,    UC Irvine,         dkirkby@uci.edu                 *
00008  *                                                                           *
00009  * Copyright (c) 2000-2005, Regents of the University of California          *
00010  *                          and Stanford University. All rights reserved.    *
00011  *                                                                           *
00012  * Redistribution and use in source and binary forms,                        *
00013  * with or without modification, are permitted according to the terms        *
00014  * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
00015  *****************************************************************************/
00016 #ifndef ROO_GAUSSIAN
00017 #define ROO_GAUSSIAN
00018 
00019 #include "RooAbsPdf.h"
00020 #include "RooRealProxy.h"
00021 
00022 class RooRealVar;
00023 
00024 class RooGaussian : public RooAbsPdf {
00025 public:
00026   RooGaussian() {} ;
00027   RooGaussian(const char *name, const char *title,
00028               RooAbsReal& _x, RooAbsReal& _mean, RooAbsReal& _sigma);
00029   RooGaussian(const RooGaussian& other, const char* name=0) ;
00030   virtual TObject* clone(const char* newname) const { return new RooGaussian(*this,newname); }
00031   inline virtual ~RooGaussian() { }
00032 
00033   Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0) const ;
00034   Double_t analyticalIntegral(Int_t code, const char* rangeName=0) const ;
00035 
00036   Int_t getGenerator(const RooArgSet& directVars, RooArgSet &generateVars, Bool_t staticInitOK=kTRUE) const;
00037   void generateEvent(Int_t code);
00038 
00039 protected:
00040 
00041   RooRealProxy x ;
00042   RooRealProxy mean ;
00043   RooRealProxy sigma ;
00044   
00045   Double_t evaluate() const ;
00046 
00047 private:
00048 
00049   ClassDef(RooGaussian,1) // Gaussian PDF
00050 };
00051 
00052 #endif