 WEIGHT = 'R' or 'N'.

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

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

  LDBV    INTEGER
 