be computed
                  and the factors will be stored in T and U (if
                  LYAPUN = 'O').

  TRANA   CHARACTER*1
          Specifies the form of op(A) to be used, as follows:
          = 'N':  op(A) = A    (No transpose);
          = 'T':  op(A) = A**T (Transpose);
          = 'C':  op(A) = A**T (Conjugate transpose = Transpose).

  UPLO    CHARACTER*1
          Specifies which part of the symmetric matrices Q and G is
          to be used, as follows:
          = 'U':  Upper triangular p