 DOUBLE PRECISION array, dimension (LDDW,MW)
          If WEIGHT = 'R' or 'B', the leading M-by-MW part of this
          array must contain the feedthrough matrix DW of the system
          with the transfer-function matrix W.
          DW is not referenced if WEIGHT = 'L' or 'N'.

  LDDW    INTEGER
          The leading dimension of array DW.
          LDDW &gt;= MAX(1,M), if WEIGHT = 'R' or 'B';
          LDDW &gt;= 1,        if WEIGHT = 'L' or 'N'.

  SCALEC  (output) DOUBLE PRECISION
          Scaling 