X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fbitboard.h;h=a53f348b2fb268eb412bebbdfc967c6f70b5b072;hp=2c51b073de3042ec1e7f1cf455b9d247ac927cd9;hb=f84f04742a30166c2751de28245e11922da132fb;hpb=c5ec94d0f1b128fc2c691c7231663a345409d5cc

diff --git a/src/bitboard.h b/src/bitboard.h
index 2c51b073..a53f348b 100644
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -63,6 +63,7 @@ extern Bitboard PassedPawnMask[COLOR_NB][SQUARE_NB];
 extern Bitboard AttackSpanMask[COLOR_NB][SQUARE_NB];
 extern Bitboard PseudoAttacks[PIECE_TYPE_NB][SQUARE_NB];
 
+const Bitboard BlackSquares = 0xAA55AA55AA55AA55ULL;
 
 /// Overloads of bitwise operators between a Bitboard and a Square for testing
 /// whether a given bit is set in a bitboard, and for setting and clearing bits.
@@ -199,8 +200,7 @@ inline bool squares_aligned(Square s1, Square s2, Square s3) {
 /// the same color of the given square.
 
 inline Bitboard same_color_squares(Square s) {
-  return Bitboard(0xAA55AA55AA55AA55ULL) & s ?  0xAA55AA55AA55AA55ULL
-                                             : ~0xAA55AA55AA55AA55ULL;
+  return BlackSquares & s ? BlackSquares : ~BlackSquares;
 }