+++ /dev/null
-/*
- Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- 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
- 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 <http://www.gnu.org/licenses/>.
-*/
-
-//Definition of input features HalfKP of NNUE evaluation function
-
-#ifndef NNUE_FEATURES_HALF_KP_H_INCLUDED
-#define NNUE_FEATURES_HALF_KP_H_INCLUDED
-
-#include "../../evaluate.h"
-#include "features_common.h"
-
-namespace Stockfish::Eval::NNUE::Features {
-
- // Feature HalfKP: Combination of the position of own king
- // and the position of pieces other than kings
- template <Side AssociatedKing>
- class HalfKP {
-
- public:
- // Feature name
- static constexpr const char* kName = "HalfKP(Friend)";
- // Hash value embedded in the evaluation file
- static constexpr std::uint32_t kHashValue =
- 0x5D69D5B9u ^ (AssociatedKing == Side::kFriend);
- // Number of feature dimensions
- static constexpr IndexType kDimensions =
- static_cast<IndexType>(SQUARE_NB) * static_cast<IndexType>(PS_END);
- // Maximum number of simultaneously active features
- static constexpr IndexType kMaxActiveDimensions = 30; // Kings don't count
- // Trigger for full calculation instead of difference calculation
- static constexpr TriggerEvent kRefreshTrigger = TriggerEvent::kFriendKingMoved;
-
- // Get a list of indices for active features
- static void AppendActiveIndices(const Position& pos, Color perspective,
- IndexList* active);
-
- // Get a list of indices for recently changed features
- static void AppendChangedIndices(const Position& pos, const DirtyPiece& dp, Color perspective,
- IndexList* removed, IndexList* added);
- };
-
-} // namespace Stockfish::Eval::NNUE::Features
-
-#endif // #ifndef NNUE_FEATURES_HALF_KP_H_INCLUDED