code: @Override
      public boolean decompose( ZMatrixRMaj A ) {
          init(A);
  
          for( int k = 0; k < N-1; k++ ) {
              similarTransform(k);
          }
  
          return true;
      }
docs: Decomposes the provided symmetric matrix.
  
  @param A Symmetric matrix that is going to be decomposed.  Not modified.