root/Minuit2/MnFunctionCross.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_MnFunctionCross
0011 #define ROOT_Minuit2_MnFunctionCross
0012
0013 #include "Minuit2/MnConfig.h"
0014
0015 #include <ROOT/RSpan.hxx>
0016
0017 #include <vector>
0018
0019 namespace ROOT {
0020
0021 namespace Minuit2 {
0022
0023 class FCNBase;
0024 class MnUserParameterState;
0025 class MnStrategy;
0026 class MnCross;
0027
0028 /**
0029    MnFunctionCross
0030 */
0031
0032 class MnFunctionCross {
0033
0034 public:
0035    MnFunctionCross(const FCNBase &fcn, const MnUserParameterState &state, double fval, const MnStrategy &stra)
0036       : fFCN(fcn), fState(state), fFval(fval), fStrategy(stra)
0037    {
0038    }
0039
0040    MnCross operator()(std::span<const unsigned int> , std::span<const double>, std::span<const double>,
0041                       double, unsigned int) const;
0042
0043 private:
0044    const FCNBase &fFCN;
0045    const MnUserParameterState &fState;
0046    double fFval;
0047    const MnStrategy &fStrategy;
0048 };
0049
0050 } // namespace Minuit2
0051
0052 } // namespace ROOT
0053
0054 #endif // ROOT_Minuit2_MnFunctionCross