RooMinimizerFcn.h

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/*****************************************************************************
 * Project: RooFit                                                           *
 * Package: RooFitCore                                                       *
 * @(#)root/roofitcore:$Id$
 * Authors:                                                                  *
 *   AL, Alfio Lazzaro,   INFN Milan,        alfio.lazzaro@mi.infn.it        *
 *   PB, Patrick Bos, Netherlands eScience Center, p.bos@esciencecenter.nl   *
 *                                                                           *
 *                                                                           *
 * 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_MINIMIZER_FCN
#define ROO_MINIMIZER_FCN
 
#include "Math/IFunction.h"
#include "Fit/ParameterSettings.h"
#include "Fit/FitResult.h"
 
#include "RooAbsReal.h"
#include "RooArgList.h"
 
#include <fstream>
#include <vector>
 
#include "RooAbsMinimizerFcn.h"
 
template <typename T>
class TMatrixTSym;
using TMatrixDSym = TMatrixTSym<double>;
 
// forward declaration
class RooMinimizer;
 
class RooMinimizerFcn : public RooAbsMinimizerFcn, public ROOT::Math::IBaseFunctionMultiDim {
 
public:
   RooMinimizerFcn(RooAbsReal *funct, RooMinimizer *context);
   RooMinimizerFcn(const RooMinimizerFcn &other);
   ~RooMinimizerFcn() override;
 
   ROOT::Math::IBaseFunctionMultiDim *Clone() const override;
   unsigned int NDim() const override { return getNDim(); }
 
   std::string getFunctionName() const override;
   std::string getFunctionTitle() const override;
 
   void setOptimizeConstOnFunction(RooAbsArg::ConstOpCode opcode, bool doAlsoTrackingOpt) override;
 
   void setOffsetting(bool flag) override;
   bool fit(ROOT::Fit::Fitter &fitter) const override { return fitter.FitFCN(*this); };
   ROOT::Math::IMultiGenFunction *getMultiGenFcn() override { return this; };
 
private:
   double DoEval(const double *x) const override;
 
   RooAbsReal *_funct;
};
 
#endif