not used.

</PRE>
<B>Input/Output Parameters</B>
<PRE>
  N       (input) INTEGER
          The order of the pencil aS - bH.  N &gt;= 0, even.

  A       (input/output) DOUBLE PRECISION array, dimension
                         (LDA, N/2)
          On entry, the leading N/2-by-N/2 part of this array must
          contain the matrix A.
          On exit, if COMPQ = 'C', the leading N/2-by-N/2 part of
          this array contains the upper triangular matrix Aout
          (see METHOD); otherwise, it contains