#define ORDER	4
#define PTRS	5

/*
 * ptrs: will point to data when the node is a leaf
 *	 will contain the next nodes when just a node
 *	 accessed as an array MAX = PTRS
 * sib:  will only be valid when the node is a leaf
 */
struct b_node {
	int		key_count;
	bool		is_leaf;
	int		*keys;
	void		**ptrs;
	struct	b_leaf	*leaf;
	struct	b_node	*sib;
};

struct b_leaf {
	int		data;
	struct b_leaf	*sib;
};