/usr/include/root/RooMoment.h is in libroot-roofit-dev 5.34.00-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Project: RooFit *
* Package: RooFitCore *
* File: $Id: RooMoment.h 30333 2009-09-21 15:39:17Z wouter $
* 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_MOMENT
#define ROO_MOMENT
#include "RooAbsReal.h"
#include "RooRealProxy.h"
#include "RooSetProxy.h"
class RooRealVar;
class RooArgList ;
class RooMoment : public RooAbsReal {
public:
RooMoment() ;
RooMoment(const char *name, const char *title, RooAbsReal& func, RooRealVar& x, Int_t order=1, Bool_t central=kFALSE, Bool_t takeRoot=kFALSE) ;
RooMoment(const char *name, const char *title, RooAbsReal& func, RooRealVar& x, const RooArgSet& nset, Int_t order=1, Bool_t central=kFALSE, Bool_t takeRoot=kFALSE,
Bool_t intNSet=kFALSE) ;
virtual ~RooMoment() ;
RooMoment(const RooMoment& other, const char* name = 0);
virtual TObject* clone(const char* newname) const { return new RooMoment(*this, newname); }
Int_t order() const { return _order ; }
Bool_t central() const { return _mean.absArg() ? kTRUE : kFALSE ; }
RooAbsReal* mean() { return (RooAbsReal*) _mean.absArg() ; }
const RooAbsReal& xF() { return _xf.arg() ; }
const RooAbsReal& ixF() { return _ixf.arg() ; }
const RooAbsReal& iF() { return _if.arg() ; }
protected:
Int_t _order ; // Moment order
Int_t _takeRoot ; // Return n-order root of moment
RooSetProxy _nset ; // Normalization set (optional)
RooRealProxy _func ; // Input function
RooRealProxy _x ; // Observable
RooRealProxy _mean ; // Mean (if calculated for central moment)
RooRealProxy _xf ; // X*F
RooRealProxy _ixf ; // Int(X*F(X))dx ;
RooRealProxy _if ; // Int(F(x))dx ;
Double_t evaluate() const;
ClassDef(RooMoment,1) // Representation of moment in a RooAbsReal in a given RooRealVar
};
#endif
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