+int bitmap_walk_contains(struct bitmap_index *,
+ struct bitmap *bitmap, const struct object_id *oid);
+
+/*
+ * After a traversal has been performed by prepare_bitmap_walk(), this can be
+ * queried to see if a particular object was reachable from any of the
+ * objects flagged as UNINTERESTING.
+ */
+int bitmap_has_oid_in_uninteresting(struct bitmap_index *, const struct object_id *oid);