root/Minuit2/MnCovarianceSqueeze.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_MnCovarianceSqueeze
0011 #define ROOT_Minuit2_MnCovarianceSqueeze
0012
0013 #include "Minuit2/MnMatrix.h"
0014
0015 namespace ROOT {
0016
0017 namespace Minuit2 {
0018
0019 class MnUserCovariance;
0020 class MinimumError;
0021
0022 /**
0023    class to reduce the covariance matrix when a parameter is fixed by
0024    removing the corresponding row and index
0025  */
0026 class MnCovarianceSqueeze {
0027 public:
0028    MnUserCovariance operator()(const MnUserCovariance &, unsigned int) const;
0029
0030    MinimumError operator()(const MinimumError &, unsigned int) const;
0031
0032    MnAlgebraicSymMatrix operator()(const MnAlgebraicSymMatrix &, unsigned int) const;
0033 };
0034
0035 } // namespace Minuit2
0036
0037 } // namespace ROOT
0038
0039 #endif // ROOT_Minuit2_MnCovarianceSqueeze