/usr/include/root/RooDerivative.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: RooDerivative.h 28259 2009-04-16 16:21:16Z 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_DERIVATIVE
#define ROO_DERIVATIVE
#include "RooAbsReal.h"
#include "RooRealProxy.h"
#include "RooSetProxy.h"
#include "Math/WrappedFunction.h"
#include "Math/RichardsonDerivator.h"
class RooRealVar;
class RooArgList ;
class RooDerivative : public RooAbsReal {
public:
RooDerivative() ;
RooDerivative(const char *name, const char *title, RooAbsReal& func, RooRealVar& x, Int_t order=1, Double_t eps=0.001) ;
RooDerivative(const char *name, const char *title, RooAbsReal& func, RooRealVar& x, const RooArgSet& nset, Int_t order=1, Double_t eps=0.001) ;
virtual ~RooDerivative() ;
RooDerivative(const RooDerivative& other, const char* name = 0);
virtual TObject* clone(const char* newname) const { return new RooDerivative(*this, newname); }
Int_t order() const { return _order ; }
Double_t eps() const { return _eps ; }
void setEps(Double_t e) { _eps = e ; }
Bool_t redirectServersHook(const RooAbsCollection& /*newServerList*/, Bool_t /*mustReplaceAll*/, Bool_t /*nameChange*/, Bool_t /*isRecursive*/) ;
protected:
Int_t _order ; // Derivation order
Double_t _eps ; // Precision
RooSetProxy _nset ; // Normalization set (optional)
RooRealProxy _func ; // Input function
RooRealProxy _x ; // Observable
mutable RooFunctor* _ftor ; //! Functor binding of RooAbsReal
mutable ROOT::Math::RichardsonDerivator *_rd ; //! Derivator
Double_t evaluate() const;
ClassDef(RooDerivative,1) // Representation of derivative of any RooAbsReal
};
#endif
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