21 #define ql_elm_new(a_elm, a_field) qr_new((a_elm), a_field)  argument
25 #define ql_last(a_head, a_field)					\  argument
27 	    ? qr_prev(ql_first(a_head), a_field) : NULL)
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);			\
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);	\
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
63 		ql_first(a_head) = qr_next(ql_first(a_head), a_field);	\
66 		qr_remove((a_elm), a_field);				\
72 #define ql_head_remove(a_head, a_type, a_field) do {			\  argument
74 	ql_remove((a_head), t, a_field);				\
77 #define ql_tail_remove(a_head, a_type, a_field) do {			\  argument
78 	a_type *t = ql_last(a_head, a_field);				\
79 	ql_remove((a_head), t, a_field);				\
82 #define ql_foreach(a_var, a_head, a_field)				\  argument
83 	qr_foreach((a_var), ql_first(a_head), a_field)
85 #define ql_reverse_foreach(a_var, a_head, a_field)			\  argument
86 	qr_reverse_foreach((a_var), ql_first(a_head), a_field)