X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Fagar%2Fagar.h;h=122cb97177ed1f594b66b7fc84fc073bc7db91bf;hb=dd204de80d65e1ef22e90d207a816b7ef6a2e548;hp=495ef7c3bdf548b354234e365c9d7b50bd0b5ead;hpb=c2966d1879c825cfaf0e7d6848a5da052ee4a038;p=ccan

diff --git a/ccan/agar/agar.h b/ccan/agar/agar.h
index 495ef7c3..122cb971 100644
--- a/ccan/agar/agar.h
+++ b/ccan/agar/agar.h
@@ -9,6 +9,7 @@
 
 struct agar_edge_info {
 	const void *to;
+	aga_icost_t icost; /* integer edge cost */
 };
 
 struct agar_graph;
@@ -70,4 +71,16 @@ bool agar_bfs_explore(struct agar_state *sr, const void *nr,
 #define agar_bfs(_nr, _sr, _startr)					\
 	for ((_nr) = (_startr); agar_bfs_explore((_sr), (_nr), &(_nr)); )
 
+/*
+ * Dijkstra's algorithm
+ */
+
+struct agar_state *agar_dijkstra_new(void *ctx, struct agar_graph *gr,
+				     const void *nr);
+bool agar_dijkstra_step(struct agar_state *sr, const void **nextr);
+bool agar_dijkstra_path(struct agar_state *sr, const void *destr,
+			aga_icost_t *total_cost,
+			const void **prevr, const void **prevedge);
+void agar_dijkstra_all_paths(struct agar_state *sr);
+
 #endif /* CCAN_AGAR_H */