P4ErrorTransforms.h

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/*
  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef P4ErrorTransforms_H
#define P4ErrorTransforms_H
#include <memory>
class ErrorMatrixEEtaPhiM;
class ErrorMatrixPxPyPzE;
 
namespace P4ErrorTransforms {
 
std::unique_ptr<ErrorMatrixEEtaPhiM> toEEtaPhiM( const ErrorMatrixPxPyPzE& em,
                                                 double px, double py, double pz, double E);
std::unique_ptr<ErrorMatrixPxPyPzE> toPxPyPzE( const ErrorMatrixEEtaPhiM& em,
                                               double E, double eta, double phi, double M);
 
}
 
 
#endif