LauMinuit.hh

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/*
Copyright 2013 University of Warwick
 
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
 
    http://www.apache.org/licenses/LICENSE-2.0
 
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
 
/*
Laura++ package authors:
John Back
Paul Harrison
Thomas Latham
*/
 
#ifndef LAU_MINUIT
#define LAU_MINUIT
 
#include "LauAbsFitter.hh"
#include "LauPrint.hh"
 
#include "Rtypes.h"
#include "TMatrixD.h"
 
#include <utility>
#include <vector>
 
class LauParameter;
class TVirtualFitter;
 
class LauMinuit : public LauAbsFitter {
 
  public:
    virtual ~LauMinuit() = default;
 
 
    virtual void initialise( LauFitObject* fitObj, const std::vector<LauParameter*>& parameters );
 
    virtual LauFitObject* getFitObject();
 
    virtual UInt_t nParameters() const { return nParams_; }
 
    virtual UInt_t nFreeParameters() const { return nFreeParams_; }
 
    virtual Bool_t twoStageFit() const { return twoStageFit_; }
 
 
    virtual void twoStageFit( Bool_t doTwoStageFit ) { twoStageFit_ = doTwoStageFit; }
 
    virtual Bool_t useAsymmFitErrors() const { return useAsymmFitErrors_; }
 
 
    virtual void useAsymmFitErrors( Bool_t useAsymmErrors ) { useAsymmFitErrors_ = useAsymmErrors; }
 
 
    virtual const FitStatus& minimise();
 
    virtual void fixSecondStageParameters();
 
    virtual void releaseSecondStageParameters();
 
    virtual void updateParameters();
 
    virtual const TMatrixD& covarianceMatrix() const { return covMatrix_; }
 
  private:
    friend class LauFitter;
 
    LauMinuit( const UInt_t maxPar = 100, const LauOutputLevel verbosity = LauOutputLevel::Standard );
 
    LauMinuit( const LauMinuit& ) = delete;
 
    LauMinuit( LauMinuit&& ) = delete;
 
    LauMinuit& operator=( const LauMinuit& ) = delete;
 
    LauMinuit& operator=( LauMinuit&& ) = delete;
 
    TVirtualFitter* minuit_ { nullptr };
 
    const UInt_t maxPar_ { 100 };
 
    const LauOutputLevel outputLevel_ { LauOutputLevel::Standard };
 
    std::vector<LauParameter*> params_;
 
    UInt_t nParams_ { 0 };
 
    UInt_t nFreeParams_ { 0 };
 
    Bool_t twoStageFit_ { kFALSE };
 
    Bool_t useAsymmFitErrors_ { kFALSE };
 
    FitStatus fitStatus_ { -1, 0.0, 0.0 };
 
    TMatrixD covMatrix_;
 
    ClassDef( LauMinuit, 0 );
};
 
#endif