gdl_insert_before, gdl_insert_after 3 | 2016-03-06 | genlist manual |
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gdl_insert_before, gdl_insert_after - enter new item as last or first of the list
void gdl_insert_before(gdl_list_t *list, itemtype *at_elem, itemtype *elem, fieldname *field)
void gdl_insert_after(gdl_list_t *list, itemtype *at_elem, itemtype *elem, fieldname *field)
gdl_insert_before inserts elem before at_elem. gdl_insert_after inserts elem after at_elem. If at_elem is NULL or is the first (last) elem of the list, the effect is the same as calling gdl_insert(3) or gdl_append(3), respectively.The list must consists of items with the same link-offset; this is assured using field.
Both calls are implemented as function-like macros evaluating to void.
Arguments:
list A list of which elem should be insert in. May not be NULL. at_elem NULL or a pointer to an item of the list. elem The element; pointer to a struct with complete type (fields known); may not be NULL. field Structure field name that is used for linking. The field must be of type gdl_elem_t (not a pointer).
gdl_insert_before, gdl_insert_after 3 | 2016-03-06 | genlist manual |
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