 V and W are continuous-time systems;
          = 'D':  G, V and W are discrete-time systems.

  JOBC    CHARACTER*1
          Specifies the choice of frequency-weighted controllability
          Grammian as follows:
          = 'S': choice corresponding to a combination method [4]
                 of the approaches of Enns [1] and Lin-Chiu [2,3];
          = 'E': choice corresponding to the stability enhanced
                 modified combination method of [4].

  JOBO    CHARACTER*1
          Specifies th