        coefficient matrix A  of the reduced pencil. The remainder
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          of the leading (N+M)-by-(N+MIN(P,M)) part is used as
          internal workspace.

  LDAF    INTEGER
          The leading dimension of array AF.  LDAF &gt;= MAX(1,N+M).

  BF      (output) COMPLEX*16 array, dimension (LDBF,N+M)
          The leading NU-by-NU part of this array contains the
          coefficient matrix B  of the reduced pencil. The
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          remainder