1 files changed, 7 insertions, 0 deletions

diff --git a/src/core/moves.h b/src/core/moves.h
index 20544a3..0d97172 100644
--- a/src/core/moves.h
+++ b/src/core/moves.h
@@ -16,6 +16,7 @@ STATIC_INLINE bool isbase(uint8_t);
 STATIC_INLINE bool parallel(uint8_t, uint8_t);
 STATIC_INLINE uint8_t moveopposite(uint8_t);
 STATIC_INLINE uint8_t reorient_move(uint8_t, uint8_t);
+STATIC_INLINE uint8_t inverse_reorient_move(uint8_t, uint8_t);
 STATIC_INLINE uint8_t movefollow(uint8_t);
 STATIC uint8_t transform_move(uint8_t, uint8_t);
 
@@ -223,6 +224,12 @@ reorient_move(uint8_t m, uint8_t or)
         return transform_move(m, orientation_trans[or]);
 }
 
+STATIC_INLINE uint8_t
+inverse_reorient_move(uint8_t m, uint8_t or)
+{
+        return transform_move(m, inverse_trans_table[orientation_trans[or]]);
+}
+
 /* This is currently unused, but it may turn out to be useful at some point */
 STATIC_INLINE uint8_t
 movefollow(uint8_t move)