Small cleanups

[stockfish] / src / types.h

diff --git a/src/types.h b/src/types.h
index 969d4e65e087f53643d2c7ff1e669d17a3924113..0c512f5bf3f7544afcae25a0cb451fb31d952ece 100644 (file)
--- a/src/types.h
+++ b/src/types.h
@@ -349,16 +349,16 @@ constexpr Color operator~(Color c) {
   return Color(c ^ BLACK); // Toggle color
 }
 
-constexpr Square flip_rank(Square s) {
+constexpr Square flip_rank(Square s) { // Swap A1 <-> A8
   return Square(s ^ SQ_A8);
 }
 
-constexpr Square flip_file(Square s) {
+constexpr Square flip_file(Square s) { // Swap A1 <-> H1
   return Square(s ^ SQ_H1);
 }
 
 constexpr Piece operator~(Piece pc) {
-  return Piece(pc ^ 8); // Swap color of piece B_KNIGHT -> W_KNIGHT
+  return Piece(pc ^ 8); // Swap color of piece B_KNIGHT <-> W_KNIGHT
 }
 
 constexpr CastlingRights operator&(Color c, CastlingRights cr) {