 poor
                scaling or eigenvalues too close to the boundary of
                the stability domain (the imaginary axis, if
                DICO = 'C', or the unit circle, if DICO = 'D').

</PRE>
<B>Error Indicator</B>
<PRE>
  INFO    INTEGER
          = 0:  successful exit;
          &lt; 0:  if INFO = -i, the i-th argument had an illegal
                value;
          = 1:  if the computed extended matrix pencil is singular,
                possibly due to rounding errors;
          = 2:  if 