  The order of the resulting numerator Q of the right
          coprime factorization with inner denominator of G (see
          METHOD).
          Generally, NQ = N - NS, where NS is the number of
          uncontrollable unstable eigenvalues.

</PRE>
<B>Tolerances</B>
<PRE>
  TOL     DOUBLE PRECISION
          The absolute tolerance level below which the elements of
          B are considered zero (used for controllability tests).
          If the user sets TOL &lt;= 0, then an implicitly computed,
      