pose</FONT></B>
<PRE>
  To reduce the pair (A,C) to lower or upper observer Hessenberg
  form using (and optionally accumulating) unitary state-space
  transformations.

</PRE>
<A name="Specification"><B><FONT SIZE="+1">Specification</FONT></B></A>
<PRE>
      SUBROUTINE TB01ND( JOBU, UPLO, N, P, A, LDA, C, LDC, U, LDU,
     $                   DWORK, INFO )
C     .. Scalar Arguments ..
      INTEGER           INFO, LDA, LDC, LDU, N, P
      CHARACTER         JOBU, UPLO
C     .. Array Arguments ..
      DOU