MnCovarianceSqueeze.h

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// @(#)root/minuit2:$Id$
// Authors: M. Winkler, F. James, L. Moneta, A. Zsenei   2003-2005
 
/**********************************************************************
 *                                                                    *
 * Copyright (c) 2005 LCG ROOT Math team,  CERN/PH-SFT                *
 *                                                                    *
 **********************************************************************/
 
#ifndef ROOT_Minuit2_MnCovarianceSqueeze
#define ROOT_Minuit2_MnCovarianceSqueeze
 
#include "Minuit2/MnMatrix.h"
 
namespace ROOT {
 
   namespace Minuit2 {
 
 
class MnUserCovariance;
class MinimumError;
 
/**
   class to reduce the covariance matrix when a parameter is fixed by
   removing the corresponding row and index
 */
class MnCovarianceSqueeze {
 
public:
 
  MnCovarianceSqueeze() {}
 
  ~MnCovarianceSqueeze() {}
 
  MnUserCovariance operator()(const MnUserCovariance&, unsigned int) const;
 
  MinimumError operator()(const MinimumError&, unsigned int) const;
 
  MnAlgebraicSymMatrix operator()(const MnAlgebraicSymMatrix&, unsigned int) const;
 
private:
 
};
 
  }  // namespace Minuit2
 
}  // namespace ROOT
 
#endif  // ROOT_Minuit2_MnCovarianceSqueeze