Improve handling of fail-highs in assumed PV

[stockfish] / src / square.h

diff --git a/src/square.h b/src/square.h
index e8c693276b051f5a082a58e045269bfe542ac95d..9683e930652e5f3bf3cd11a413ec3474c7b6690d 100644 (file)
--- a/src/square.h
+++ b/src/square.h
@@ -163,16 +163,16 @@ inline File file_from_char(char c) {
   return File(c - 'a') + FILE_A;
 }
 
-inline int file_to_char(File f) {
-  return int(f - FILE_A) + 'a';
+inline char file_to_char(File f) {
+  return char(f - FILE_A + int('a'));
 }
 
 inline Rank rank_from_char(char c) {
   return Rank(c - '1') + RANK_1;
 }
 
-inline int rank_to_char(Rank r) {
-  return int(r - RANK_1) + '1';
+inline char rank_to_char(Rank r) {
+  return char(r - RANK_1 + int('1'));
 }
 
 inline Square square_from_string(const std::string& str) {