1 files changed, 3 insertions, 0 deletions
diff --git a/board.h b/board.h
index 440143f..cc60e62 100644
--- a/board.h
+++ b/board.h
@@ -60,6 +60,9 @@ struct pcoords {
 
 void init_board();
 
+struct ccoords pol_to_cart(struct pcoords c);
+struct pcoords cart_to_pol(struct ccoords c);
+
 struct segment segment_from_pcoords(struct pcoords c);
 struct segment segment_from_name(const char *name);
 struct pcoords segment_centre(struct segment seg);