X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;ds=sidebyside;f=src%2Fnnue%2Ffeatures%2Fhalf_kp.cpp;h=aa1deceece2eab33b511a5749b0821e84984dd9e;hb=HEAD;hp=628add6ed12eebc550e61dbeae4fdb9be784618f;hpb=84f3e867903f62480c33243dd0ecbffd342796fc;p=stockfish
diff --git a/src/nnue/features/half_kp.cpp b/src/nnue/features/half_kp.cpp
deleted file mode 100644
index 628add6e..00000000
--- a/src/nnue/features/half_kp.cpp
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- Copyright (C) 2004-2020 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
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- Stockfish is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see .
-*/
-
-//Definition of input features HalfKP of NNUE evaluation function
-
-#include "half_kp.h"
-#include "index_list.h"
-
-namespace Eval::NNUE::Features {
-
- // Find the index of the feature quantity from the king position and PieceSquare
- template
- inline IndexType HalfKP::MakeIndex(Square sq_k, PieceSquare p) {
- return static_cast(PS_END) * static_cast(sq_k) + p;
- }
-
- // Get pieces information
- template
- inline void HalfKP::GetPieces(
- const Position& pos, Color perspective,
- PieceSquare** pieces, Square* sq_target_k) {
-
- *pieces = (perspective == BLACK) ?
- pos.eval_list()->piece_list_fb() :
- pos.eval_list()->piece_list_fw();
- const PieceId target = (AssociatedKing == Side::kFriend) ?
- static_cast(PIECE_ID_KING + perspective) :
- static_cast(PIECE_ID_KING + ~perspective);
- *sq_target_k = static_cast(((*pieces)[target] - PS_W_KING) % SQUARE_NB);
- }
-
- // Get a list of indices for active features
- template
- void HalfKP::AppendActiveIndices(
- const Position& pos, Color perspective, IndexList* active) {
-
- // Do nothing if array size is small to avoid compiler warning
- if (RawFeatures::kMaxActiveDimensions < kMaxActiveDimensions) return;
-
- PieceSquare* pieces;
- Square sq_target_k;
- GetPieces(pos, perspective, &pieces, &sq_target_k);
- for (PieceId i = PIECE_ID_ZERO; i < PIECE_ID_KING; ++i) {
- if (pieces[i] != PS_NONE) {
- active->push_back(MakeIndex(sq_target_k, pieces[i]));
- }
- }
- }
-
- // Get a list of indices for recently changed features
- template
- void HalfKP::AppendChangedIndices(
- const Position& pos, Color perspective,
- IndexList* removed, IndexList* added) {
-
- PieceSquare* pieces;
- Square sq_target_k;
- GetPieces(pos, perspective, &pieces, &sq_target_k);
- const auto& dp = pos.state()->dirtyPiece;
- for (int i = 0; i < dp.dirty_num; ++i) {
- if (dp.pieceId[i] >= PIECE_ID_KING) continue;
- const auto old_p = static_cast(
- dp.old_piece[i].from[perspective]);
- if (old_p != PS_NONE) {
- removed->push_back(MakeIndex(sq_target_k, old_p));
- }
- const auto new_p = static_cast(
- dp.new_piece[i].from[perspective]);
- if (new_p != PS_NONE) {
- added->push_back(MakeIndex(sq_target_k, new_p));
- }
- }
- }
-
- template class HalfKP;
-
-} // namespace Eval::NNUE::Features