X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fbitboard.h;h=a8c0afbcd3cde49532b1ae95b13481a4b0a809f1;hb=3d2aab11d89493311e0908a9ee1a8288b9ff9b42;hp=140867fa94a466272d55be020451b0eb8b012f77;hpb=2bfe61c33b99bd5ebb2e4616a6e8ac5790ff4c4f;p=stockfish

diff --git a/src/bitboard.h b/src/bitboard.h
index 140867fa..a8c0afbc 100644
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -21,9 +21,9 @@
 #ifndef BITBOARD_H_INCLUDED
 #define BITBOARD_H_INCLUDED
 
-#include "types.h"
+#include <string>
 
-extern Bitboard pext(Bitboard b, Bitboard mask);
+#include "types.h"
 
 namespace Bitboards {
 
@@ -57,8 +57,6 @@ const Bitboard Rank6BB = Rank1BB << (8 * 5);
 const Bitboard Rank7BB = Rank1BB << (8 * 6);
 const Bitboard Rank8BB = Rank1BB << (8 * 7);
 
-CACHE_LINE_ALIGNMENT
-
 extern Bitboard RMasks[SQUARE_NB];
 extern Bitboard RMagics[SQUARE_NB];
 extern Bitboard* RAttacks[SQUARE_NB];
@@ -119,11 +117,11 @@ inline int square_distance(Square s1, Square s2) {
 }
 
 inline int file_distance(Square s1, Square s2) {
-  return abs(file_of(s1) - file_of(s2));
+  return dist(file_of(s1), file_of(s2));
 }
 
 inline int rank_distance(Square s1, Square s2) {
-  return abs(rank_of(s1) - rank_of(s2));
+  return dist(rank_of(s1), rank_of(s2));
 }
 
 
@@ -243,6 +241,9 @@ FORCE_INLINE unsigned magic_index(Square s, Bitboard occ) {
   Bitboard* const Magics = Pt == ROOK ? RMagics : BMagics;
   unsigned* const Shifts = Pt == ROOK ? RShifts : BShifts;
 
+  if (HasPext)
+      return unsigned(_pext_u64(occ, Masks[s]));
+
   if (Is64Bit)
       return unsigned(((occ & Masks[s]) * Magics[s]) >> Shifts[s]);