quadtree: Add missing function definition to the header

Signed-off-by: Timo Kokkonen <kaapeli@itanic.dy.fi>

diff --git a/quadtree.h b/quadtree.h
index 4e478159a56855d3205d1ec4cf21142fd835992e..94c02cd3b12b2fc0f3902642bb90d54f91f8f1f7 100644 (file)
--- a/quadtree.h
+++ b/quadtree.h
@@ -29,6 +29,11 @@ struct quadtree_iterator {
        void (*callback)(struct quadtree *head, void *ptr);
 };
 
+struct quadtree *quadtree_add(struct quadtree *parent,
+                             struct quadtree *new,
+                             int (*compare)(struct quadtree *a,
+                                            struct quadtree *b));
+
 int walk_tree(const struct quadtree_iterator *iterator);
 
 #endif