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RooExponential.h
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1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitModels *
4  * File: $Id: RooExponential.h,v 1.10 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_EXPONENTIAL
17 #define ROO_EXPONENTIAL
18 
19 #include "RooAbsPdf.h"
20 #include "RooRealProxy.h"
21 
22 class RooRealVar;
23 class RooAbsReal;
24 
25 class RooExponential : public RooAbsPdf {
26 public:
28  RooExponential(const char *name, const char *title,
29  RooAbsReal& _x, RooAbsReal& _c);
30  RooExponential(const RooExponential& other, const char* name=0);
31  virtual TObject* clone(const char* newname) const override { return new RooExponential(*this,newname); }
32  inline virtual ~RooExponential() { }
33 
34  Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0) const override;
35  Double_t analyticalIntegral(Int_t code, const char* rangeName=0) const override;
36 
37 protected:
40 
41  Double_t evaluate() const override;
42  RooSpan<double> evaluateSpan(BatchHelpers::RunContext& evalData, const RooArgSet* normSet) const override;
43 
44 private:
45  ClassDefOverride(RooExponential,1) // Exponential PDF
46 };
47 
48 #endif
RooExponential::c
RooRealProxy c
Definition: RooExponential.h:39
RooExponential::clone
virtual TObject * clone(const char *newname) const override
Definition: RooExponential.h:31
RooAbsReal
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:61
ClassDefOverride
#define ClassDefOverride(name, id)
Definition: Rtypes.h:329
BatchHelpers::RunContext
Data that has to be passed around when evaluating functions / PDFs.
Definition: RunContext.h:32
RooExponential::~RooExponential
virtual ~RooExponential()
Definition: RooExponential.h:32
RooExponential::analyticalIntegral
Double_t analyticalIntegral(Int_t code, const char *rangeName=0) const override
Implements the actual analytical integral(s) advertised by getAnalyticalIntegral.
Definition: RooExponential.cxx:77
RooExponential::getAnalyticalIntegral
Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=0) const override
Interface function getAnalyticalIntergral advertises the analytical integrals that are supported.
Definition: RooExponential.cxx:68
RooAbsPdf.h
RooExponential::evaluate
Double_t evaluate() const override
cout << "exp(x=" << x << ",c=" << c << ")=" << exp(c*x) << endl ;
Definition: RooExponential.cxx:62
RooExponential::evaluateSpan
RooSpan< double > evaluateSpan(BatchHelpers::RunContext &evalData, const RooArgSet *normSet) const override
Compute multiple values of Exponential distribution.
Definition: RooExponential.cxx:94
RooRealProxy.h
RooExponential::x
RooRealProxy x
Definition: RooExponential.h:38
RooTemplateProxy< RooAbsReal >
Double_t
double Double_t
Definition: RtypesCore.h:59
TObject
Mother of all ROOT objects.
Definition: TObject.h:37
name
char name[80]
Definition: TGX11.cxx:110
RooAbsPdf
Definition: RooAbsPdf.h:43
RooRealVar
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:37
RooExponential
Exponential PDF.
Definition: RooExponential.h:25
RooSpan
A simple container to hold a batch of data values.
Definition: RooSpan.h:34
RooArgSet
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:29
int
RooExponential::RooExponential
RooExponential()
Definition: RooExponential.h:27