message: Avoid explicit numbering in the enum
diff: @@ -32,9 +32,9 @@ public:
  */
  enum DiagonalPolicy
  {
  - DIAG_KEEP = 0, ///< keep the value
  - DIAG_ZERO = 1, ///< set diagonal value to zero
  - DIAG_ONE = 2, ///< set diagonal value to one
  + DIAG_ZERO, ///< set diagonal value to zero
  + DIAG_ONE, ///< set diagonal value to one
  + DIAG_KEEP, ///< keep the value
  };
  /// Creates a square matrix of size s.
  