ading N-by-N part of this array must
          contain the state matrix A (of the system with the
          transfer-function matrix G) in a real Schur form.

  LDA     INTEGER
          The leading dimension of array A.  LDA &gt;= MAX(1,N).

  B       (input) DOUBLE PRECISION array, dimension (LDB,M)
          The leading N-by-M part of this array must contain the
          input/state matrix B.

  LDB     INTEGER
          The leading dimension of array B.  LDB &gt;= MAX(1,N).

  C       (input) DOUBLE PR