   If JOB = 'C' or JOB = 'B', an estimate of the reciprocal
          condition number of the discrete-time Riccati equation.
          If N = 0 or X = 0, RCOND is set to 1 or 0, respectively.
          If JOB = 'E', RCOND is not referenced.

  FERR    (output) DOUBLE PRECISION
          If JOB = 'E' or JOB = 'B', an estimated forward error
          bound for the solution X. If XTRUE is the true solution,
          FERR bounds the magnitude of the largest entry in
          (X - XTRUE) divided by the magni