Update copyright years

[stockfish] / src / nnue / nnue_feature_transformer.h

diff --git a/src/nnue/nnue_feature_transformer.h b/src/nnue/nnue_feature_transformer.h
index f49777b50bbe3f6809acd358399ae9b5dbf1bda1..2641321e6cbe0c6247c194630384826926d7c3b1 100644 (file)
--- a/src/nnue/nnue_feature_transformer.h
+++ b/src/nnue/nnue_feature_transformer.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2020 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2021 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -247,7 +247,7 @@ namespace Eval::NNUE {
       // Look for a usable accumulator of an earlier position. We keep track
       // of the estimated gain in terms of features to be added/subtracted.
       StateInfo *st = pos.state(), *next = nullptr;
-      int gain = popcount(pos.pieces()) - 2;
+      int gain = pos.count<ALL_PIECES>() - 2;
       while (st->accumulator.state[c] == EMPTY)
       {
         auto& dp = st->dirtyPiece;