#ifndef COVMATRIXELEMENT_H
#define COVMATRIXELEMENT_H
// $Id: CovMatrixElement.h,v 1.3 2002/05/03 18:52:03 sachs Exp $
// Internal definitions for CovMatrix class code     
// Definitions for Element ordinals for Covariant Matrices
// Currently this enum provides for Matrix sizes 1 through 6

namespace CovMatrices
{
  enum CovMatrixElement
  {
     // NOTE: Numeric values of the enumerators are important
     M00 = 0,
  
     M10 = 1, M01 = 1,
     M11 = 2,
  
     M20 = 3, M02 = 3,
     M21 = 4, M12 = 4,
     M22 = 5,
  
     M30 = 6, M03 = 6,
     M31 = 7, M13 = 7,
     M32 = 8, M23 = 8,
     M33 = 9,
  
     M40 = 10, M04 = 10,
     M41 = 11, M14 = 11,
     M42 = 12, M24 = 12,
     M43 = 13, M34 = 13,
     M44 = 14,
  
     M50 = 15, M05 =15,
     M51 = 16, M15 =16,
     M52 = 17, M25 =17,
     M53 = 18, M35 =18,
     M54 = 19, M45 =19,
     M55 = 20,
  
     M_INVALID_COVMATRIX_ELEMENT = 21	// Must be 1 more than largest legal value
  };
}
#endif