fifo_is_empty

	is_empty.i4.v = fifo_is_empty(fifo.gp.r)

	This routine will returns whether or not a FIFO is empty.

	fifo		FIFO to check

	This function requires the following include files:

	cbslib_h

	Related functions:

	fifo_init, fifo_push, fifo_pop, fifo_peek, fifo_delete, fifo_free

	C/C++ usage:

	int	is_empty;
	void	*fifo;

	is_empty = fifo_is_empty(&fifo);