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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 { return new RooExponential(*this,newname); }
32  inline virtual ~RooExponential() { }
33 
34  Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0) const ;
35  Double_t analyticalIntegral(Int_t code, const char* rangeName=0) const ;
36 
37 protected:
40 
41  Double_t evaluate() const;
42 
43 private:
44  ClassDef(RooExponential,1) // Exponential PDF
45 };
46 
47 #endif
Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=0) const
Interface function getAnalyticalIntergral advertises the analytical integrals that are supported...
int Int_t
Definition: RtypesCore.h:41
RooRealProxy x
RooRealProxy c
#define ClassDef(name, id)
Definition: Rtypes.h:320
Exponential p.d.f.
RooRealVar represents a fundamental (non-derived) real valued object.
Definition: RooRealVar.h:36
Double_t evaluate() const
cout << "exp(x=" << x << ",c=" << c << ")=" << exp(c*x) << endl ;
double Double_t
Definition: RtypesCore.h:55
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:53
Mother of all ROOT objects.
Definition: TObject.h:37
RooAbsPdf is the abstract interface for all probability density functions The class provides hybrid a...
Definition: RooAbsPdf.h:41
RooRealProxy is the concrete proxy for RooAbsReal objects A RooRealProxy is the general mechanism to ...
Definition: RooRealProxy.h:23
virtual TObject * clone(const char *newname) const
virtual ~RooExponential()
char name[80]
Definition: TGX11.cxx:109
Double_t analyticalIntegral(Int_t code, const char *rangeName=0) const
Implements the actual analytical integral(s) advertised by getAnalyticalIntegral. ...