dio_specify_raw_reading_func

	status.i4.v = dio_specify_raw_reading_func(reading_func.f.v
						   [,func_data.g.v])

	This function will register a function to be called when
	reading raw device information.

	reading_func	address of function to be called as follows:
			reading_func(func_data.g.v, device_index.i4.v,
				     property.i2.v, void *raw_data,
				     length.i4.v, offset.i4.v,
				     data_event.i1a.r)
			(function of type dio_raw_reading_function)
	[func_data]	pointer to user-supplied data to be passed to
			reading function
			(default is NULL)

	This function requires the following include files:

	diolib_h

	Related functions:

	dio_get_raw_reading_func, dio_remove_raw_reading_func,
	dio_get_raw(_c), dio_get_lst_raw(_c),
	dio_specify_raw_setting_func, dio_get_raw_setting_func,
	dio_remove_raw_setting_func

	C/C++ usage:

	int	status;
	dio_raw_reading_function	reading_func;
	void	*func_data = (void *) NULL;

	status = dio_specify_raw_reading_func(reading_func,func_data);