
          system with the transfer-function matrix W.

  ALPHAC  (input) DOUBLE PRECISION
          Combination method parameter for defining the
          frequency-weighted controllability Grammian (see METHOD);
          ABS(ALPHAC) &lt;= 1.

  ALPHAO  (input) DOUBLE PRECISION
          Combination method parameter for defining the
          frequency-weighted observability Grammian (see METHOD);
          ABS(ALPHAO) &lt;= 1.

  A       (input) DOUBLE PRECISION array, dimension (LDA,N)
          The le