X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fbook.cpp;h=e14de41589f392248777f31f7634e7072f3c7a76;hp=8624dfbf8e88d9c386e970b2096ae13045df821d;hb=6b5322ce000d6a8a6f845beda2d7e149e1baea0c;hpb=67d91dfd505ce7e2c641c12e5d14b50896874ec7

diff --git a/src/book.cpp b/src/book.cpp
index 8624dfbf..e14de415 100644
--- a/src/book.cpp
+++ b/src/book.cpp
@@ -316,7 +316,7 @@ namespace {
     {
         // Piece offset is at 64 * polyPiece where polyPiece is defined as:
         // BP = 0, WP = 1, BN = 2, WN = 3, ... BK = 10, WK = 11
-        Square s = pop_1st_bit(&b);
+        Square s = pop_lsb(&b);
         Piece p = pos.piece_on(s);
         int polyPiece = 2 * (type_of(p) - 1) + (color_of(p) == WHITE);
         key ^= ZobPiece[64 * polyPiece + s];
@@ -325,7 +325,7 @@ namespace {
     b = pos.can_castle(ALL_CASTLES);
 
     while (b)
-        key ^= ZobCastle[pop_1st_bit(&b)];
+        key ^= ZobCastle[pop_lsb(&b)];
 
     if (pos.ep_square() != SQ_NONE)
         key ^= ZobEnPassant[file_of(pos.ep_square())];