CombinedMinimizer.h

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// @(#)root/minuit2:$Id$
// Authors: M. Winkler, F. James, L. Moneta, A. Zsenei   2003-2005
 
/**********************************************************************
 *                                                                    *
 * Copyright (c) 2005 LCG ROOT Math team,  CERN/PH-SFT                *
 *                                                                    *
 **********************************************************************/
 
#ifndef ROOT_Minuit2_CombinedMinimizer
#define ROOT_Minuit2_CombinedMinimizer
 
#include "Minuit2/ModularFunctionMinimizer.h"
#include "Minuit2/MnSeedGenerator.h"
#include "Minuit2/CombinedMinimumBuilder.h"
 
namespace ROOT {
 
namespace Minuit2 {
 
//__________________________________________________________________________
/**
   Combined minimizer: combination of Migrad and Simplex. I
   If the Migrad method fails at first attempt, a simplex
   minimization is performed and then migrad is tried again.
 
 
*/
 
class CombinedMinimizer : public ModularFunctionMinimizer {
 
public:
   CombinedMinimizer() : fMinSeedGen(MnSeedGenerator()), fMinBuilder(CombinedMinimumBuilder()) {}
 
   ~CombinedMinimizer() override {}
 
   const MinimumSeedGenerator &SeedGenerator() const override { return fMinSeedGen; }
   const MinimumBuilder &Builder() const override { return fMinBuilder; }
   MinimumBuilder &Builder() override { return fMinBuilder; }
 
private:
   MnSeedGenerator fMinSeedGen;
   CombinedMinimumBuilder fMinBuilder;
};
 
} // namespace Minuit2
 
} // namespace ROOT
 
#endif // ROOT_Minuit2_CombinedMinimizer