root/Minuit2/MnMinimize.h

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_MnMinimize
0011 #define ROOT_Minuit2_MnMinimize
0012
0013 #include "Minuit2/MnApplication.h"
0014 #include "Minuit2/CombinedMinimizer.h"
0015
0016 #include <vector>
0017
0018 namespace ROOT {
0019
0020 namespace Minuit2 {
0021
0022 class FCNBase;
0023
0024 /** API class for minimization using Variable Metric technology ("MIGRAD");
0025     allows for user interaction: set/change parameters, do minimization,
0026     change parameters, re-do minimization etc.;
0027     also used by MnMinos and MnContours;
0028  */
0029
0030 class MnMinimize : public MnApplication {
0031
0032 public:
0033    /// construct from FCNBase + MnUserParameterState + MnStrategy
0034    MnMinimize(const FCNBase &fcn, const MnUserParameterState &par, const MnStrategy &str = MnStrategy{1})
0035       : MnApplication(fcn, {par}, str), fMinimizer(CombinedMinimizer())
0036    {
0037    }
0038
0039    MnMinimize(const MnMinimize &migr)
0040       : MnApplication(migr.Fcnbase(), migr.State(), migr.Strategy(), migr.NumOfCalls()), fMinimizer(migr.fMinimizer)
0041    {
0042    }
0043
0044    ModularFunctionMinimizer &Minimizer() override { return fMinimizer; }
0045    const ModularFunctionMinimizer &Minimizer() const override { return fMinimizer; }
0046
0047 private:
0048    CombinedMinimizer fMinimizer;
0049
0050 private:
0051    // forbidden assignment operator
0052    MnMinimize &operator=(const MnMinimize &) { return *this; }
0053 };
0054
0055 } // namespace Minuit2
0056
0057 } // namespace ROOT
0058
0059 #endif // ROOT_Minuit2_MnMinimize