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# Conflicts: # README.md # Readme.md # src/Makefile # src/evaluate.cpp # src/evaluate.h # src/misc.cpp # src/nnue/architectures/halfkp_256x2-32-32.h # src/nnue/evaluate_nnue.cpp # src/nnue/evaluate_nnue.h # src/nnue/features/feature_set.h # src/nnue/features/features_common.h # src/nnue/features/half_kp.cpp # src/nnue/features/half_kp.h # src/nnue/features/index_list.h # src/nnue/layers/affine_transform.h # src/nnue/layers/clipped_relu.h # src/nnue/layers/input_slice.h # src/nnue/nnue_accumulator.h # src/nnue/nnue_architecture.h # src/nnue/nnue_common.h # src/nnue/nnue_feature_transformer.h # src/position.cpp # src/position.h # src/types.h # src/ucioption.cpp # stockfish.md
53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
//Definition of input feature P of NNUE evaluation function
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#if defined(EVAL_NNUE)
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#include "p.h"
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#include "index_list.h"
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namespace Eval {
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namespace NNUE {
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namespace Features {
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// Get a list of indices with a value of 1 among the features
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void P::AppendActiveIndices(
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const Position& pos, Color perspective, IndexList* active) {
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// do nothing if array size is small to avoid compiler warning
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if (RawFeatures::kMaxActiveDimensions < kMaxActiveDimensions) return;
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const PieceSquare* pieces = (perspective == BLACK) ?
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pos.eval_list()->piece_list_fb() :
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pos.eval_list()->piece_list_fw();
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for (PieceId i = PieceId::PIECE_ID_ZERO; i < PieceId::PIECE_ID_KING; ++i) {
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if (pieces[i] != PieceSquare::PS_NONE) {
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active->push_back(pieces[i]);
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}
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}
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}
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// Get a list of indices whose values have changed from the previous one in the feature quantity
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void P::AppendChangedIndices(
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const Position& pos, Color perspective,
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IndexList* removed, IndexList* added) {
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const auto& dp = pos.state()->dirtyPiece;
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for (int i = 0; i < dp.dirty_num; ++i) {
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if (dp.pieceId[i] >= PieceId::PIECE_ID_KING) continue;
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if (dp.old_piece[i].from[perspective] != PieceSquare::PS_NONE) {
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removed->push_back(dp.old_piece[i].from[perspective]);
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}
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if (dp.new_piece[i].from[perspective] != PieceSquare::PS_NONE) {
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added->push_back(dp.new_piece[i].from[perspective]);
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}
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}
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}
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} // namespace Features
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} // namespace NNUE
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} // namespace Eval
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#endif // defined(EVAL_NNUE)
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