X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fdirection.h;h=19e84925f8d499f4e9ddf10ec205866354b1582d;hp=4ca264a0291ae5ed59deb21a7170444fcadab32b;hb=734fb9a13b75a2c52c04352bc508b6a71e3f9300;hpb=74160ac60266f9e6824a5a6417d8a0ac8c0b39cf

diff --git a/src/direction.h b/src/direction.h
index 4ca264a0..19e84925 100644
--- a/src/direction.h
+++ b/src/direction.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) 2008-2009 Marco Costalba
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -74,6 +74,13 @@ inline SignedDirection signed_direction_between_squares(Square s1, Square s2) {
   return SignedDirection(SignedDirectionTable[s1][s2]);
 }
 
+inline int direction_is_diagonal(Square s1, Square s2) {
+  return DirectionTable[s1][s2] & 2;
+}
+
+inline bool direction_is_straight(Square s1, Square s2) {
+  return DirectionTable[s1][s2] < 2;
+}
 
 ////
 //// Prototypes