ROOT   Reference Guide
RooParametricStepFunction.h
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1/*****************************************************************************
2 * Project: RooFit *
3 * Package: RooFitModels *
4 * File: $Id: RooParametricStepFunction.h,v 1.5 2007/05/11 09:13:07 verkerke Exp$
5 * Authors: *
6 * Aaron Roodman, Stanford Linear Accelerator Center, Stanford University *
7 * *
9 *
10 * *
11 * Redistribution and use in source and binary forms, *
12 * with or without modification, are permitted according to the terms *
14 *****************************************************************************/
15#ifndef ROO_PARAMETRIC_STEP_FUNCTION
16#define ROO_PARAMETRIC_STEP_FUNCTION
17
18#include "TArrayD.h"
19#include "RooAbsPdf.h"
20#include "RooRealProxy.h"
21#include "RooListProxy.h"
22
23class RooRealVar;
24class RooArgList ;
25
27public:
28
30
31 RooParametricStepFunction(const char *name, const char *title,
32 RooAbsReal& x, const RooArgList& coefList, TArrayD& limits, Int_t nBins=1) ;
33
34 RooParametricStepFunction(const RooParametricStepFunction& other, const char* name = 0);
35 virtual TObject* clone(const char* newname) const { return new RooParametricStepFunction(*this, newname); }
37
38 Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0) const ;
39 Double_t analyticalIntegral(Int_t code, const char* rangeName=0) const ;
42
43protected:
44
45 Double_t lastBinValue() const ;
46
51 TIterator* _coefIter ; //! do not persist
52
53 Double_t evaluate() const;
54
55 ClassDef(RooParametricStepFunction,1) // Parametric Step Function Pdf
56};
57
58#endif
double Double_t
Definition: RtypesCore.h:57
#define ClassDef(name, id)
Definition: Rtypes.h:322
char name[80]
Definition: TGX11.cxx:109
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:60
RooArgList is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgList.h:21
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:28
RooListProxy is the concrete proxy for RooArgList objects.
Definition: RooListProxy.h:25
The Parametric Step Function PDF is a binned distribution whose parameters are the heights of each bi...
Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=0) const
Interface function getAnalyticalIntergral advertises the analytical integrals that are supported.
Double_t analyticalIntegral(Int_t code, const char *rangeName=0) const
Implements the actual analytical integral(s) advertised by getAnalyticalIntegral.
virtual ~RooParametricStepFunction()
Destructor.
virtual TObject * clone(const char *newname) const
Double_t evaluate() const
do not persist
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:35
Array of doubles (64 bits per element).
Definition: TArrayD.h:27
Iterator abstract base class.
Definition: TIterator.h:30
Mother of all ROOT objects.
Definition: TObject.h:37
Double_t x[n]
Definition: legend1.C:17