///Returns the running state of the timer

     ///Returns the running state of the timer

     ///This function returns the number of stop() exections that is

     ///This function returns the number of stop() exections that is

     ///necessary to really stop the timer.

     ///necessary to really stop the timer.

     ///is running if and only if the return value is \c true

     ///is running if and only if the return value is \c true

     ///(i.e. greater than

     ///(i.e. greater than

     ///zero).

     ///zero).

     int running()  { return _running; }

     int running()  { return _running; }