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RooAbsMoment.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_ABS_MOMENT
17#define ROO_ABS_MOMENT
18
19#include "RooAbsReal.h"
20#include "RooRealProxy.h"
21#include "RooSetProxy.h"
22
23
24class RooRealVar;
25class RooArgList ;
26
27class RooAbsMoment : public RooAbsReal {
28public:
29
30 RooAbsMoment() ;
31 RooAbsMoment(const char *name, const char *title, RooAbsReal& func, RooRealVar& x, Int_t order=1, Bool_t takeRoot=kFALSE) ;
32 RooAbsMoment(const RooAbsMoment& other, const char* name = 0);
33 virtual ~RooAbsMoment() ;
34
35 Int_t order() const { return _order ; }
36 Bool_t central() const { return _mean.absArg() ? kTRUE : kFALSE ; }
37 RooAbsReal* mean() { return (RooAbsReal*) _mean.absArg() ; }
38
39
40protected:
41
42 Int_t _order ; // Moment order
43 Int_t _takeRoot ; // Return n-order root of moment
44 RooSetProxy _nset ; // Normalization set (optional)
45 RooRealProxy _func ; // Input function
46 RooRealProxy _x ; // Observable
47 RooRealProxy _mean ; // Mean (if calculated for central moment)
48
49 ClassDef(RooAbsMoment,1) // Abstract representation of moment in a RooAbsReal in a given RooRealVar
50};
51
52#endif
int Int_t
Definition: CPyCppyy.h:43
const Bool_t kFALSE
Definition: RtypesCore.h:101
bool Bool_t
Definition: RtypesCore.h:63
const Bool_t kTRUE
Definition: RtypesCore.h:100
#define ClassDef(name, id)
Definition: Rtypes.h:325
RooAbsMoment represents the first, second, or third order derivative of any RooAbsReal as calculated ...
Definition: RooAbsMoment.h:27
RooRealProxy _mean
Definition: RooAbsMoment.h:47
RooAbsReal * mean()
Definition: RooAbsMoment.h:37
RooRealProxy _x
Definition: RooAbsMoment.h:46
virtual ~RooAbsMoment()
Destructor.
Int_t order() const
Definition: RooAbsMoment.h:35
Int_t _takeRoot
Definition: RooAbsMoment.h:43
RooRealProxy _func
Definition: RooAbsMoment.h:45
Bool_t central() const
Definition: RooAbsMoment.h:36
RooAbsMoment()
Default constructor.
RooSetProxy _nset
Definition: RooAbsMoment.h:44
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:61
RooArgList is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgList.h:22
RooAbsArg * absArg() const
Definition: RooArgProxy.h:37
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:39
RooSetProxy is the concrete proxy for RooArgSet objects.
Definition: RooSetProxy.h:23
Double_t x[n]
Definition: legend1.C:17
static const std::string name("name")