  0   B   R  )       (  0   0   0  )

  where I and 0 denote the identity and zero matrix, respectively,
  of appropriate dimensions.

  NOTE: the formulation of the CARE and the related matrix (pencils)
        used here does not include CAREs as they arise in robust
        control (H_infinity optimization).

</PRE>
<A name="Specification"><B><FONT SIZE="+1">Specification</FONT></B></A>
<PRE>
      SUBROUTINE BB01AD(DEF, NR, DPAR, IPAR, BPAR, CHPAR, VEC, N, M, P,
     1                  A, LDA, B, LDB, C,