queue_size

	num_entries.i4.v = queue_size(queue.g.v)

	This routine will returns the number of entries in a queue.

	queue		queue to check

	This function returns status values as follows:

	CLIB_INVARG		not a valid queue
	otherwise		number of entries in the queue

	This function requires the following include files:

	cbslib_h

	Related functions:

	queue_is_empty, queue_init, queue_insert, queue_remove, queue_peek,
	queue_delete, queue_free

	C/C++ usage:

	int	num_entries;
	void	*queue;

	num_entries = queue_size(queue);