cator</B>
<PRE>
  INFO    INTEGER
          = 0:  successful exit;
          &lt; 0:  if INFO = -i, the i-th argument had an illegal
                value;
          = 1:  the reduction of A to a real Schur form failed;
          = 2:  a failure was detected during the reordering of the
                real Schur form of A, or in the iterative process
                for reordering the eigenvalues of Z'*(A + B*F)*Z
                along the diagonal (see SLICOT routine SB08DD);
          = 3:  if DICO = 'C'