85 struct quehead {  struct
86 	struct quehead *qh_link;  argument
87 	struct quehead *qh_rlink;  argument
93 	register struct quehead *element = (struct quehead *) a;  in insque()
94 	register struct quehead *head = (struct quehead *) b;  in insque()
96 	head->qh_link = (struct quehead *)element;  in insque()
97 	element->qh_rlink = (struct quehead *)head;  in insque()
98 	((struct quehead *)(element->qh_link))->qh_rlink  in insque()
99 	= (struct quehead *)element;  in insque()
105   register struct quehead *element = (struct quehead *) a;  in remque()
106   ((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink;  in remque()
107   ((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link;  in remque()