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RooRealConstant.h
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1/*****************************************************************************
2 * Project: RooFit *
3 * Package: RooFitCore *
4 * File: $Id: RooRealConstant.h,v 1.13 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_REAL_CONSTANT
17#define ROO_REAL_CONSTANT
18
19#include "Rtypes.h"
20
21class RooAbsReal ;
22class RooArgList ;
23#include "RooConstVar.h"
24
26public:
27
28 inline RooRealConstant() {} ;
29 virtual ~RooRealConstant() {} ;
31
32 static RooConstVar& removalDummy() ;
33
34protected:
35
36 static RooArgList& constDB();
37
38 ClassDef(RooRealConstant,0) // RooRealVar constants factory
39};
40
41
42#endif
43
double Double_t
Definition: RtypesCore.h:59
#define ClassDef(name, id)
Definition: Rtypes.h:325
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
RooConstVar represent a constant real-valued object.
Definition: RooConstVar.h:26
RooRealConstant provides static functions to create and keep track of RooRealVar constants.
static RooArgList & constDB()
One-time initialization of constants database.
virtual ~RooRealConstant()
static RooConstVar & removalDummy()
Create a dummy node used in node-removal operations.
static RooConstVar & value(Double_t value)
Return a constant value object with given value.