21 #define ql_elm_new(a_elm, a_field) qr_new((a_elm), a_field)  argument
29 #define ql_next(a_head, a_elm, a_field)					\  argument
30 	((ql_last(a_head, a_field) != (a_elm))				\
31 	    ? qr_next((a_elm), a_field)	: NULL)
33 #define ql_prev(a_head, a_elm, a_field)					\  argument
34 	((ql_first(a_head) != (a_elm)) ? qr_prev((a_elm), a_field)	\
37 #define ql_before_insert(a_head, a_qlelm, a_elm, a_field) do {		\  argument
38 	qr_before_insert((a_qlelm), (a_elm), a_field);			\
40 		ql_first(a_head) = (a_elm);				\
44 #define ql_after_insert(a_qlelm, a_elm, a_field)			\  argument
45 	qr_after_insert((a_qlelm), (a_elm), a_field)
47 #define ql_head_insert(a_head, a_elm, a_field) do {			\  argument
49 		qr_before_insert(ql_first(a_head), (a_elm), a_field);	\
51 	ql_first(a_head) = (a_elm);					\
54 #define ql_tail_insert(a_head, a_elm, a_field) do {			\  argument
56 		qr_before_insert(ql_first(a_head), (a_elm), a_field);	\
58 	ql_first(a_head) = qr_next((a_elm), a_field);			\
61 #define ql_remove(a_head, a_elm, a_field) do {				\  argument
62 	if (ql_first(a_head) == (a_elm)) {				\
65 	if (ql_first(a_head) != (a_elm)) {				\
66 		qr_remove((a_elm), a_field);				\