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RooPolyVar.h
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1/*****************************************************************************
2 * Project: RooFit *
3 * Package: RooFitCore *
4 * File: $Id: RooPolyVar.h,v 1.7 2007/05/11 09:11:30 verkerke 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_POLY_VAR
17#define ROO_POLY_VAR
18
19#include <vector>
20
21#include "RooAbsReal.h"
22#include "RooRealProxy.h"
23#include "RooListProxy.h"
24
25class RooRealVar;
26class RooArgList ;
27
28class RooPolyVar : public RooAbsReal {
29public:
30
31 RooPolyVar() ;
32 RooPolyVar(const char* name, const char* title, RooAbsReal& x) ;
33 RooPolyVar(const char *name, const char *title,
34 RooAbsReal& _x, const RooArgList& _coefList, Int_t lowestOrder=0) ;
35
36 RooPolyVar(const RooPolyVar& other, const char* name = 0);
37 TObject* clone(const char* newname) const override { return new RooPolyVar(*this, newname); }
38 ~RooPolyVar() override ;
39
40 Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0) const override ;
41 Double_t analyticalIntegral(Int_t code, const char* rangeName=0) const override ;
42
43protected:
44
48
49 mutable std::vector<Double_t> _wksp; ///<! do not persist
50
51 Double_t evaluate() const override;
52
53 ClassDefOverride(RooPolyVar,1) // Polynomial function
54};
55
56#endif
#define ClassDefOverride(name, id)
Definition: Rtypes.h:339
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:63
RooArgList is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgList.h:22
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:57
Class RooPolyVar is a RooAbsReal implementing a polynomial in terms of a list of RooAbsReal coefficie...
Definition: RooPolyVar.h:28
Double_t evaluate() const override
Calculate and return value of polynomial.
Definition: RooPolyVar.cxx:121
RooPolyVar()
Default constructor.
Definition: RooPolyVar.cxx:47
Double_t analyticalIntegral(Int_t code, const char *rangeName=0) const override
Calculate and return analytical integral over x.
Definition: RooPolyVar.cxx:157
Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=0) const override
Advertise that we can internally integrate over x.
Definition: RooPolyVar.cxx:146
TObject * clone(const char *newname) const override
Definition: RooPolyVar.h:37
~RooPolyVar() override
Destructor.
Definition: RooPolyVar.cxx:112
Int_t _lowestOrder
Definition: RooPolyVar.h:47
RooListProxy _coefList
Definition: RooPolyVar.h:46
RooRealProxy _x
Definition: RooPolyVar.h:45
std::vector< Double_t > _wksp
! do not persist
Definition: RooPolyVar.h:49
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:40
Mother of all ROOT objects.
Definition: TObject.h:37
Double_t x[n]
Definition: legend1.C:17