X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=79fe1ae37ad5105427b88b85d9c7bff8ac63f5a9;hp=83a0c9123c708b2e739ecb9a737f51fa2ab1fa9d;hb=19540c9ee824abc156d5a12ab353c250a083da4b;hpb=cf0561d31a177454e1c16db21677da20348b0124

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 83a0c912..79fe1ae3 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -517,7 +517,7 @@ namespace {
 
             assert(b);
 
-            if (!(b & (b - 1)) && (b & pos.pieces(Them)))
+            if (single_bit(b) && (b & pos.pieces(Them)))
                 score += ThreatBonus[Piece][type_of(pos.piece_on(first_1(b)))] / 2;
         }