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RooExtendedTerm.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_EXTENDED_TERM
17#define ROO_EXTENDED_TERM
18
19#include "RooAbsPdf.h"
20#include "RooRealProxy.h"
21
22class RooExtendedTerm : public RooAbsPdf {
23public:
24
26 RooExtendedTerm(const char *name, const char *title, const RooAbsReal& n) ;
27 RooExtendedTerm(const RooExtendedTerm& other, const char* name=0) ;
28 TObject* clone(const char* newname) const override { return new RooExtendedTerm(*this,newname) ; }
29 ~RooExtendedTerm() override ;
30
31 double evaluate() const override { return 1. ; }
32
33 ExtendMode extendMode() const override { return CanBeExtended ; }
34 /// Return number of expected events, in other words the value of the associated n parameter.
35 double expectedEvents(const RooArgSet* nset) const override ;
36
37protected:
38
39 RooRealProxy _n ; ///< Number of expected events
40
41 ClassDefOverride(RooExtendedTerm,1) // Meta-p.d.f flat in all observables introducing only extended ML term
42};
43
44#endif
#define ClassDefOverride(name, id)
Definition: Rtypes.h:339
char name[80]
Definition: TGX11.cxx:110
@ CanBeExtended
Definition: RooAbsPdf.h:257
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:64
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:57
RooExtendedTerm is a p.d.f with no observables that only introduces an extended ML term for a given n...
ExtendMode extendMode() const override
Returns ability of PDF to provide extended likelihood terms.
double evaluate() const override
Evaluate this PDF / function / constant. Needs to be overridden by all derived classes.
RooRealProxy _n
Number of expected events.
RooExtendedTerm()
Constructor.
double expectedEvents(const RooArgSet *nset) const override
Return number of expected events, in other words the value of the associated n parameter.
~RooExtendedTerm() override
Destructor.
TObject * clone(const char *newname) const override
Mother of all ROOT objects.
Definition: TObject.h:37
const Int_t n
Definition: legend1.C:16