Teach file_to_char() about upper/lower case

[stockfish] / src / types.h

diff --git a/src/types.h b/src/types.h
index 506e1b0f9b5f1adeb6c82db127d89b5165432ec4..b7bcb4e89f168c9fdf48cdad1fcfc9d596712ccd 100644 (file)
--- a/src/types.h
+++ b/src/types.h
@@ -441,8 +441,8 @@ inline int square_distance(Square s1, Square s2) {
   return SquareDistance[s1][s2];
 }
 
-inline char file_to_char(File f) {
-  return char(f - FILE_A + 'a');
+inline char file_to_char(File f, bool tolower = true) {
+  return char(f - FILE_A + (tolower ? 'a' : 'A'));
 }
 
 inline char rank_to_char(Rank r) {