X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsquare.h;h=66b714a13de3589cb4f0686ab47bfd24d4d53bf4;hp=4f024c961df33b8c3c40caed7617b1b14196ccf9;hb=ba1a44f21665056bed6f4b767e1a5b1b381e7e22;hpb=683595fee15a1d8ceeb1bbd577d96ed9c0f8aaaa

diff --git a/src/square.h b/src/square.h
index 4f024c96..66b714a1 100644
--- a/src/square.h
+++ b/src/square.h
@@ -1,7 +1,7 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
-  Copyright (C) 2008 Marco Costalba
+  Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -164,7 +164,7 @@ inline File file_from_char(char c) {
 }
 
 inline char file_to_char(File f) {
-  return char(f - FILE_A) + 'a';
+  return char(f - FILE_A + int('a'));
 }
 
 inline Rank rank_from_char(char c) {
@@ -172,7 +172,7 @@ inline Rank rank_from_char(char c) {
 }
 
 inline char rank_to_char(Rank r) {
-  return char(r - RANK_1) + '1';
+  return char(r - RANK_1 + int('1'));
 }
 
 inline Square square_from_string(const std::string& str) {