e;
          = 3:  the SVD algorithm for computing singular values did
                not converge;
          = 4:  the tolerance is too small and the algorithm did
                not converge; this is a warning; 
          = 5:  other computations than QZ iteration, or reordering
                of eigenvalues, failed in the LAPACK Library
                routines DHGEQZ or DTGSEN, respectively;
          = 6:  the numbers of "finite" eigenvalues before and after
                reordering differ; the th