Implement 8dir breadth-first-search and some other stuff

1 files changed, 1 insertions, 1 deletions

diff --git a/priority_queue.h b/priority_queue.h
index 1f933e7..2ac580e 100644
--- a/priority_queue.h
+++ b/priority_queue.h
@@ -19,7 +19,7 @@ typedef struct PositionPQNode_s PositionPQ;
 PositionPQ *ppq_new(Position pos, size_t priority);
 
 /* Insert a pos with priority into a given PositionPQ */
-void ppq_insert(PositionPQ **ppq, Position pos, size_t priority);
+int ppq_insert(PositionPQ **ppq, Position pos, size_t priority);
 
 /* Remove and return the position with the lowest priority */
 Position ppq_pop(PositionPQ **ppq);