         The leading dimension of array BV.
          LDBV &gt;= MAX(1,NV), if WEIGHT = 'L' or 'B';
          LDBV &gt;= 1,         if WEIGHT = 'R' or 'N'.

  CV      (input) DOUBLE PRECISION array, dimension (LDCV,NV)
          If WEIGHT = 'L' or 'B', the leading PV-by-NV part of this
          array must contain the output matrix CV of the system with
          the transfer-function matrix V.
          CV is not referenced if WEIGHT = 'R' or 'N'.

  LDCV    INTEGER
          The leading dimension of array