X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fnnue%2Ffeatures%2Fhalf_kp.cpp;h=aa1deceece2eab33b511a5749b0821e84984dd9e;hp=88e384a3578cf6156fc24c6a9c00e5a4a753aca5;hb=HEAD;hpb=2c097c81268e083f472bccfb47ecf56db3e3853e
diff --git a/src/nnue/features/half_kp.cpp b/src/nnue/features/half_kp.cpp
deleted file mode 100644
index 88e384a3..00000000
--- a/src/nnue/features/half_kp.cpp
+++ /dev/null
@@ -1,72 +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 {
-
- // Orient a square according to perspective (rotates by 180 for black)
- inline Square orient(Color perspective, Square s) {
- return Square(int(s) ^ (bool(perspective) * 63));
- }
-
- // Find the index of the feature quantity from the king position and PieceSquare
- template
- inline IndexType HalfKP::MakeIndex(
- Color perspective, Square s, Piece pc, Square ksq) {
-
- return IndexType(orient(perspective, s) + kpp_board_index[pc][perspective] + PS_END * ksq);
- }
-
- // Get a list of indices for active features
- template
- void HalfKP::AppendActiveIndices(
- const Position& pos, Color perspective, IndexList* active) {
-
- Square ksq = orient(perspective, pos.square(perspective));
- Bitboard bb = pos.pieces() & ~pos.pieces(KING);
- while (bb) {
- Square s = pop_lsb(&bb);
- active->push_back(MakeIndex(perspective, s, pos.piece_on(s), ksq));
- }
- }
-
- // Get a list of indices for recently changed features
- template
- void HalfKP::AppendChangedIndices(
- const Position& pos, Color perspective,
- IndexList* removed, IndexList* added) {
-
- Square ksq = orient(perspective, pos.square(perspective));
- const auto& dp = pos.state()->dirtyPiece;
- for (int i = 0; i < dp.dirty_num; ++i) {
- Piece pc = dp.piece[i];
- if (type_of(pc) == KING) continue;
- if (dp.from[i] != SQ_NONE)
- removed->push_back(MakeIndex(perspective, dp.from[i], pc, ksq));
- if (dp.to[i] != SQ_NONE)
- added->push_back(MakeIndex(perspective, dp.to[i], pc, ksq));
- }
- }
-
- template class HalfKP;
-
-} // namespace Eval::NNUE::Features