         On entry, the leading P-by-M part of this array must
          contain the input/output matrix of the system.
          If DICO = 'C', D must be a null matrix.
          On exit, the leading P-by-M part of this array contains
          the input/output matrix of the numerator factor Q of
          the right coprime factorization with inner denominator
          of G (see METHOD).

  LDD     INTEGER
          The leading dimension of array D.  LDD &gt;= MAX(1,P).

  NQ      (output) INTEGER
        