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1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitModels *
4  * File: $Id: RooGaussian.h,v 1.16 2007/07/12 20:30:49 wouter Exp $
5  * Authors: *
6  * WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
7  * DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
8  * *
9  * Copyright (c) 2000-2005, Regents of the University of California *
10  * and Stanford University. All rights reserved. *
11  * *
12  * Redistribution and use in source and binary forms, *
13  * with or without modification, are permitted according to the terms *
14  * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
15  *****************************************************************************/
16 #ifndef ROO_GAUSSIAN
17 #define ROO_GAUSSIAN
19 #include "RooAbsPdf.h"
20 #include "RooRealProxy.h"
21 #include "RooTrace.h"
23 class RooRealVar;
25 class RooGaussian : public RooAbsPdf {
26 public:
27  RooGaussian() { };
28  RooGaussian(const char *name, const char *title,
29  RooAbsReal& _x, RooAbsReal& _mean, RooAbsReal& _sigma);
30  RooGaussian(const RooGaussian& other, const char* name=0);
31  virtual TObject* clone(const char* newname) const override {
32  return new RooGaussian(*this,newname);
33  }
34  inline virtual ~RooGaussian() { }
36  Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0) const override;
37  Double_t analyticalIntegral(Int_t code, const char* rangeName=0) const override;
39  Int_t getGenerator(const RooArgSet& directVars, RooArgSet &generateVars, Bool_t staticInitOK=kTRUE) const override;
40  void generateEvent(Int_t code) override;
42 protected:
48  Double_t evaluate() const override;
49  RooSpan<double> evaluateBatch(std::size_t begin, std::size_t batchSize) const override;
51 private:
53  ClassDefOverride(RooGaussian,1) // Gaussian PDF
54 };
56 #endif
A simple container to hold a batch of data values.
Definition: RooSpan.h:32
RooRealProxy x
Definition: RooGaussian.h:44
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:28
Double_t analyticalIntegral(Int_t code, const char *rangeName=0) const override
Implements the actual analytical integral(s) advertised by getAnalyticalIntegral. ...
virtual TObject * clone(const char *newname) const override
Definition: RooGaussian.h:31
Double_t evaluate() const override
Evaluate this PDF / function / constant. Needs to be overridden by all derived classes.
Definition: RooGaussian.cxx:61
Plain Gaussian p.d.f.
Definition: RooGaussian.h:25
RooRealProxy sigma
Definition: RooGaussian.h:46
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:35
Int_t getGenerator(const RooArgSet &directVars, RooArgSet &generateVars, Bool_t staticInitOK=kTRUE) const override
Load generatedVars with the subset of directVars that we can generate events for, and return a code t...
void generateEvent(Int_t code) override
Interface for generation of an event using the algorithm corresponding to the specified code...
RooSpan< double > evaluateBatch(std::size_t begin, std::size_t batchSize) const override
Compute in batches.
Definition: RooGaussian.cxx:99
double Double_t
Definition: RtypesCore.h:57
RooRealProxy mean
Definition: RooGaussian.h:45
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:60
Mother of all ROOT objects.
Definition: TObject.h:37
virtual ~RooGaussian()
Definition: RooGaussian.h:34
RooAbsPdf, the base class of all PDFs
Definition: RooAbsPdf.h:40
Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=0) const override
Interface function getAnalyticalIntergral advertises the analytical integrals that are supported...
#define ClassDefOverride(name, id)
Definition: Rtypes.h:326
const Bool_t kTRUE
Definition: RtypesCore.h:89
char name[80]
Definition: TGX11.cxx:109