tion of the shifts failed);
          = 2: standard QZ iteration failed in the SLICOT Library
               routines MB04HD or MB03DD (called by MB03JD);
          = 3: a numerically singular matrix was found in the SLICOT
               Library routine MB03HD (called by MB03JD);
          = 4: the singular value decomposition failed in the LAPACK
               routine DGESVD (for ORTH = 'S');
          = 5: some eigenvalues might be inaccurate. This is a
               warning.

</PRE>
<A name="Method"><