root/Minuit2/MnVectorTransform.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_MnVectorTransform
0011 #define ROOT_Minuit2_MnVectorTransform
0012
0013 #include "Minuit2/MnMatrix.h"
0014
0015 #include <vector>
0016
0017 namespace ROOT {
0018
0019 namespace Minuit2 {
0020
0021 class MnVectorTransform {
0022
0023 public:
0024    MnVectorTransform() {}
0025
0026    ~MnVectorTransform() {}
0027
0028    std::vector<double> operator()(const MnAlgebraicVector &avec) const
0029    {
0030
0031       std::vector<double> result;
0032       result.reserve(avec.size());
0033
0034       for (unsigned int i = 0; i < avec.size(); i++)
0035          result.push_back(avec(i));
0036
0037       return result;
0038    }
0039 };
0040
0041 } // namespace Minuit2
0042
0043 } // namespace ROOT
0044
0045 #endif // ROOT_Minuit2_MnVectorTransform