X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fbitboard.h;h=a53f348b2fb268eb412bebbdfc967c6f70b5b072;hp=b99cc2597ceb7959709b50c1dbfa3514e2479383;hb=f84f04742a30166c2751de28245e11922da132fb;hpb=e304db9d1ecf6a2318708483c90fadecf4fac4ee

diff --git a/src/bitboard.h b/src/bitboard.h
index b99cc259..a53f348b 100644
--- a/src/bitboard.h
+++ b/src/bitboard.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) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
+  Copyright (C) 2008-2013 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
@@ -33,7 +33,7 @@ void print(Bitboard b);
 namespace Bitbases {
 
 void init_kpk();
-uint32_t probe_kpk(Square wksq, Square wpsq, Square bksq, Color stm);
+bool probe_kpk(Square wksq, Square wpsq, Square bksq, Color us);
 
 }
 
@@ -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;
 }
 
 
@@ -280,7 +280,7 @@ FORCE_INLINE Square msb(Bitboard b) {
 
 FORCE_INLINE Square pop_lsb(Bitboard* b) {
   const Square s = lsb(*b);
-  *b &= ~(1ULL << s);
+  *b &= *b - 1;
   return s;
 }