stack_is_empty

	is_empty.i4.v = stack_is_empty(stack.gp.r)

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

	stack		stack to check

	This function returns status values as follows:

	TRUE			stack is empty
	FALSE			stack contains at least one element

	This function requires the following include files:

	cbslib_h

	Related functions:

	stack_init, stack_push, stack_pop, stack_peek, stack_delete, stack_free

	C/C++ usage:

	int	is_empty;
	void	*stack;

	is_empty = stack_is_empty(&stack);