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File indexing completed on 2025-01-18 10:10:23

0001 // @(#)root/minuit2:$Id$
0002 // Authors: M. Winkler, F. James, L. Moneta, A. Zsenei   2003-2005
0003 
0004 /**********************************************************************
0005  *                                                                    *
0006  * Copyright (c) 2005 LCG ROOT Math team,  CERN/PH-SFT                *
0007  *                                                                    *
0008  **********************************************************************/
0009 
0010 #ifndef ROOT_Minuit2_DavidonErrorUpdator
0011 #define ROOT_Minuit2_DavidonErrorUpdator
0012 
0013 #include "Minuit2/MinimumErrorUpdator.h"
0014 
0015 namespace ROOT {
0016 
0017 namespace Minuit2 {
0018 
0019 /**
0020    Update of the covariance matrix for the Variable Metric minimizer (MIGRAD)
0021  */
0022 class DavidonErrorUpdator : public MinimumErrorUpdator {
0023 
0024 public:
0025    DavidonErrorUpdator() {}
0026 
0027    ~DavidonErrorUpdator() override {}
0028 
0029    MinimumError Update(const MinimumState &, const MinimumParameters &, const FunctionGradient &) const override;
0030 
0031 private:
0032 };
0033 
0034 } // namespace Minuit2
0035 
0036 } // namespace ROOT
0037 
0038 #endif // ROOT_Minuit2_DavidonErrorUpdator