X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fbitboard.h;fp=src%2Fbitboard.h;h=ef5c4fa304ab1beb366077a36720dab9782744d4;hb=14e23d520f251f28234a686a9d30d9711495dfef;hp=4e0267f11e42efbe192224494b2cb69ab6b4dff2;hpb=5935daf8a5b6925a6af2084f87e3831b3bb17dac;p=stockfish

diff --git a/src/bitboard.h b/src/bitboard.h
index 4e0267f1..ef5c4fa3 100644
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -184,8 +184,8 @@ constexpr Bitboard pawn_double_attacks_bb(Bitboard b) {
 /// adjacent_files_bb() returns a bitboard representing all the squares on the
 /// adjacent files of the given one.
 
-inline Bitboard adjacent_files_bb(File f) {
-  return shift<EAST>(file_bb(f)) | shift<WEST>(file_bb(f));
+inline Bitboard adjacent_files_bb(Square s) {
+  return shift<EAST>(file_bb(s)) | shift<WEST>(file_bb(s));
 }
 
 
@@ -221,7 +221,7 @@ inline Bitboard forward_file_bb(Color c, Square s) {
 /// starting from the given square.
 
 inline Bitboard pawn_attack_span(Color c, Square s) {
-  return forward_ranks_bb(c, s) & adjacent_files_bb(file_of(s));
+  return forward_ranks_bb(c, s) & adjacent_files_bb(s);
 }
 
 
@@ -229,7 +229,7 @@ inline Bitboard pawn_attack_span(Color c, Square s) {
 /// the given color and on the given square is a passed pawn.
 
 inline Bitboard passed_pawn_span(Color c, Square s) {
-  return forward_ranks_bb(c, s) & (adjacent_files_bb(file_of(s)) | file_bb(s));
+  return forward_ranks_bb(c, s) & (adjacent_files_bb(s) | file_bb(s));
 }