fifo_peek

	value.g.v = fifo_peek(fifo.gp.r)

	This routine will return the value on of the top of a FIFO
	without removing it.

	fifo		FIFO to peek

	This function requires the following include files:

	cbslib_h

	Related functions:

	fifo_init, fifo_push, fifo_pop, fifo_delete, fifo_free,
	fifo_is_empty

	C/C++ usage:

	void	*fifo;
	void	*value;

	value = fifo_peek(&fifo);