ECISION array, dimension (LDC,N)
          The leading P-by-N part of this array must contain the
          state/output matrix C.

  LDC     INTEGER
          The leading dimension of array C.  LDC &gt;= MAX(1,P).

  AV      (input) DOUBLE PRECISION array, dimension (LDAV,NV)
          If WEIGHT = 'L' or 'B', the leading NV-by-NV part of this
          array must contain the state matrix AV (of the system with
          the transfer-function matrix V) in a real Schur form.
          AV is not referenced if