37 	list->prev = list;  in list_init()
44 	assert((list->next != NULL && list->prev != NULL) ||  in list_insert()
46 	assert(((elm->next == NULL && elm->prev == NULL) || list_empty(elm)) ||  in list_insert()
49 	elm->prev = list;  in list_insert()
52 	elm->next->prev = elm;  in list_insert()
58 	assert((list->next != NULL && list->prev != NULL) ||  in list_append()
60 	assert(((elm->next == NULL && elm->prev == NULL) || list_empty(elm)) ||  in list_append()
64 	elm->prev = list->prev;  in list_append()
65 	list->prev = elm;  in list_append()
66 	elm->prev->next = elm;  in list_append()
72 	assert((elm->next != NULL && elm->prev != NULL) ||  in list_remove()
75 	elm->prev->next = elm->next;  in list_remove()
76 	elm->next->prev = elm->prev;  in list_remove()
78 	elm->prev = NULL;  in list_remove()
84 	assert((list->next != NULL && list->prev != NULL) ||  in list_empty()