BB = 'B';
          LDS &gt;= MAX(1,2*N)   if JOBB = 'G'.

  T       (output) DOUBLE PRECISION array, dimension (LDT,2*N)
          The leading 2N-by-2N part of this array contains the
          ordered upper triangular form T of the second matrix in
          the reduced matrix pencil associated to the optimal
          problem, corresponding to the scaled Q, R, and L, if
          JOBB = 'B' and SCAL = 'G'. That is,

                 (T   T  )
                 ( 11  12)
             T = (       ),
       