Revision 716fb731a3c8c9b583235feddac21006994d9626 authored by Kyle Cranmer on 03 August 2011, 22:09:36 UTC, committed by Kyle Cranmer on 03 August 2011, 22:09:36 UTC
git-svn-id: http://root.cern.ch/svn/root/branches/v5-30-00-patches@40446 27541ba8-7e3a-0410-8455-c3a389f83636
1 parent 0db9ccb
RooFormulaVar.h
/*****************************************************************************
* Project: RooFit *
* Package: RooFitCore *
* File: $Id: RooFormulaVar.h,v 1.29 2007/08/09 19:55:47 wouter Exp $
* Authors: *
* WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
* DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
* *
* Copyright (c) 2000-2005, Regents of the University of California *
* and Stanford University. All rights reserved. *
* *
* Redistribution and use in source and binary forms, *
* with or without modification, are permitted according to the terms *
* listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
*****************************************************************************/
#ifndef ROO_FORMULA_VAR
#define ROO_FORMULA_VAR
#include "RooAbsReal.h"
#include "RooFormula.h"
#include "RooArgList.h"
#include "RooListProxy.h"
class RooArgSet ;
class RooFormulaVar : public RooAbsReal {
public:
// Constructors, assignment etc
inline RooFormulaVar() : _formula(0), _nset(0) { }
RooFormulaVar(const char *name, const char *title, const char* formula, const RooArgList& dependents);
RooFormulaVar(const char *name, const char *title, const RooArgList& dependents);
RooFormulaVar(const RooFormulaVar& other, const char* name=0);
virtual TObject* clone(const char* newname) const { return new RooFormulaVar(*this,newname); }
virtual ~RooFormulaVar();
inline Bool_t ok() const { return formula().ok() ; }
inline RooAbsArg* getParameter(const char* name) const {
// Return pointer to parameter with given name
return _actualVars.find(name) ;
}
inline RooAbsArg* getParameter(Int_t index) const {
// Return pointer to parameter at given index
return _actualVars.at(index) ;
}
// I/O streaming interface (machine readable)
virtual Bool_t readFromStream(istream& is, Bool_t compact, Bool_t verbose=kFALSE) ;
virtual void writeToStream(ostream& os, Bool_t compact) const ;
// Printing interface (human readable)
virtual void printMultiline(ostream& os, Int_t contents, Bool_t verbose=kFALSE, TString indent= "") const ;
void printMetaArgs(ostream& os) const ;
// Debugging
void dumpFormula() { formula().dump() ; }
virtual Double_t getVal(const RooArgSet* set=0) const ;
virtual Double_t defaultErrorLevel() const ;
protected:
// Function evaluation
virtual Double_t evaluate() const ;
RooFormula& formula() const ;
// Post-processing of server redirection
virtual Bool_t redirectServersHook(const RooAbsCollection& newServerList, Bool_t mustReplaceAll, Bool_t nameChange, Bool_t isRecursive) ;
virtual Bool_t isValidReal(Double_t value, Bool_t printError) const ;
RooListProxy _actualVars ; // Actual parameters used by formula engine
mutable RooFormula* _formula ; //! Formula engine
mutable RooArgSet* _nset ; //! Normalization set to be passed along to contents
TString _formExpr ; // Formula expression string
ClassDef(RooFormulaVar,1) // Real-valued function of other RooAbsArgs calculated by a TFormula expression
};
#endif
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