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Reference Guide
RooFirstMoment.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_FIRST_MOMENT
17#define ROO_FIRST_MOMENT
18
19#include "RooAbsMoment.h"
20#include "RooRealProxy.h"
21#include "RooSetProxy.h"
22
23
24class RooRealVar;
25class RooArgList ;
26
28public:
29
31 RooFirstMoment(const char *name, const char *title, RooAbsReal& func, RooRealVar& x) ;
32 RooFirstMoment(const char *name, const char *title, RooAbsReal& func, RooRealVar& x, const RooArgSet& nset, bool intNSet=false) ;
33 ~RooFirstMoment() override ;
34
35 RooFirstMoment(const RooFirstMoment& other, const char* name = 0);
36 TObject* clone(const char* newname) const override { return new RooFirstMoment(*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*F
45 RooRealProxy _ixf ; ///< Int(X*F(X))dx ;
46 RooRealProxy _if ; ///< Int(F(x))dx ;
47 double evaluate() const override;
48
49 ClassDefOverride(RooFirstMoment,1) // Representation of moment in a RooAbsReal in a given RooRealVar
50};
51
52#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
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
RooFirstMoment represents the first, second, or third order derivative of any RooAbsReal as calculate...
~RooFirstMoment() override
Destructor.
TObject * clone(const char *newname) const override
const RooAbsReal & ixF()
const RooAbsReal & xF()
RooRealProxy _xf
X*F.
RooFirstMoment()
Default constructor.
double evaluate() const override
Calculate value.
RooRealProxy _ixf
Int(X*F(X))dx ;.
const RooAbsReal & iF()
RooRealProxy _if
Int(F(x))dx ;.
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:40
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