or 'B';
          LDAW &gt;= 1,         if WEIGHT = 'L' or 'N'.

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

  LDBW    INTEGER
          The leading dimension of array BW.
          LDBW &gt;= MAX(1,NW), if WEIGHT = 'R' or 'B';
          LDBW &gt;= 1,         