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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
22class RooRealVar;
23class RooAbsReal;
24
25class RooExponential : public RooAbsPdf {
26public:
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
37protected:
40
41 Double_t evaluate() const override;
42 RooSpan<double> evaluateSpan(RooBatchCompute::RunContext& evalData, const RooArgSet* normSet) const override;
43
44private:
45 ClassDefOverride(RooExponential,1) // Exponential PDF
46};
47
48#endif
int Int_t
Definition: RtypesCore.h:45
double Double_t
Definition: RtypesCore.h:59
#define ClassDefOverride(name, id)
Definition: Rtypes.h:329
char name[80]
Definition: TGX11.cxx:110
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:61
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:35
Exponential PDF.
RooRealProxy c
Double_t analyticalIntegral(Int_t code, const char *rangeName=0) const override
Implements the actual analytical integral(s) advertised by getAnalyticalIntegral.
Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=0) const override
Interface function getAnalyticalIntergral advertises the analytical integrals that are supported.
virtual ~RooExponential()
virtual TObject * clone(const char *newname) const override
RooRealProxy x
RooSpan< double > evaluateSpan(RooBatchCompute::RunContext &evalData, const RooArgSet *normSet) const override
Compute multiple values of Exponential distribution.
Double_t evaluate() const override
Evaluate this PDF / function / constant. Needs to be overridden by all derived classes.
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:39
A simple container to hold a batch of data values.
Definition: RooSpan.h:34
Mother of all ROOT objects.
Definition: TObject.h:37
This struct enables passing computation data around between elements of a computation graph.
Definition: RunContext.h:31