// In header: <boost/date_time/time_duration.hpp>

template<typename base_duration,  frac_of_second> 
class subsecond_duration : public  {
public:
  // types
  typedef    ;  
  typedef  ;

  // private member functions
   (( = =, 
                           \ "The base duration resolution must be a multiple of the subsecond duration resolution");
   (,  = ();

  // public member functions
  template<typename T> 
    (, 
                                 = );
};