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Reference Guide
RooSecondMoment.h
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1/*****************************************************************************
2 * Project: RooFit *
3 * Package: RooFitCore *
4 * File: $Id$
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_SECOND_MOMENT
17#define ROO_SECOND_MOMENT
18
19#include "RooAbsMoment.h"
20#include "RooRealProxy.h"
21#include "RooSetProxy.h"
22
23
24class RooRealVar;
25class RooArgList ;
26
28public:
29
31 RooSecondMoment(const char *name, const char *title, RooAbsReal& func, RooRealVar& x, bool central=false, bool takeRoot=false) ;
32 RooSecondMoment(const char *name, const char *title, RooAbsReal& func, RooRealVar& x, const RooArgSet& nset, bool central=false, bool takeRoot=false, bool intNSet=false) ;
33 ~RooSecondMoment() override ;
34
35 RooSecondMoment(const RooSecondMoment& other, const char* name = 0);
36 TObject* clone(const char* newname) const override { return new RooSecondMoment(*this, newname); }
37
38 const RooAbsReal& xF() { return _xf.arg() ; }
39 const RooAbsReal& ixF() { return _ixf.arg() ; }
40 const RooAbsReal& iF() { return _if.arg() ; }
41
42protected:
43
44 RooRealProxy _xf ; ///< (X-offset)*F
45 RooRealProxy _ixf ; ///< Int((X-offset)*F(X))dx ;
46 RooRealProxy _if ; ///< Int(F(x))dx ;
47 double _xfOffset ; ///< offset
48 double evaluate() const override;
49
50 ClassDefOverride(RooSecondMoment,1) // Representation of moment in a RooAbsReal in a given RooRealVar
51};
52
53#endif
#define ClassDefOverride(name, id)
Definition: Rtypes.h:339
char name[80]
Definition: TGX11.cxx:110
RooAbsMoment represents the first, second, or third order derivative of any RooAbsReal as calculated ...
Definition: RooAbsMoment.h:27
bool central() const
Definition: RooAbsMoment.h:36
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:64
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
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:40
RooSecondMoment represents the first, second, or third order derivative of any RooAbsReal as calculat...
const RooAbsReal & ixF()
RooRealProxy _ixf
Int((X-offset)*F(X))dx ;.
const RooAbsReal & iF()
RooRealProxy _if
Int(F(x))dx ;.
double evaluate() const override
Calculate value.
const RooAbsReal & xF()
RooSecondMoment()
Default constructor.
TObject * clone(const char *newname) const override
double _xfOffset
offset
RooRealProxy _xf
(X-offset)*F
~RooSecondMoment() override
Destructor.
const T & arg() const
Return reference to object held in proxy.
Mother of all ROOT objects.
Definition: TObject.h:37
Double_t x[n]
Definition: legend1.C:17