/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- Copyright (C) 2004-2021 The Stockfish developers (see AUTHORS file)
+ Copyright (C) 2004-2023 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
#ifndef NNUE_FEATURES_HALF_KA_V2_HM_H_INCLUDED
#define NNUE_FEATURES_HALF_KA_V2_HM_H_INCLUDED
-#include "../nnue_common.h"
+#include <cstdint>
-#include "../../evaluate.h"
#include "../../misc.h"
+#include "../../types.h"
+#include "../nnue_common.h"
namespace Stockfish {
- struct StateInfo;
+struct StateInfo;
+class Position;
}
namespace Stockfish::Eval::NNUE::Features {
- // Feature HalfKAv2_hm: Combination of the position of own king
- // and the position of pieces. Position mirrored such that king always on e..h files.
- class HalfKAv2_hm {
+// Feature HalfKAv2_hm: Combination of the position of own king
+// and the position of pieces. Position mirrored such that king always on e..h files.
+class HalfKAv2_hm {
// unique number for each piece type on each square
enum {
- PS_NONE = 0,
- PS_W_PAWN = 0,
- PS_B_PAWN = 1 * SQUARE_NB,
- PS_W_KNIGHT = 2 * SQUARE_NB,
- PS_B_KNIGHT = 3 * SQUARE_NB,
- PS_W_BISHOP = 4 * SQUARE_NB,
- PS_B_BISHOP = 5 * SQUARE_NB,
- PS_W_ROOK = 6 * SQUARE_NB,
- PS_B_ROOK = 7 * SQUARE_NB,
- PS_W_QUEEN = 8 * SQUARE_NB,
- PS_B_QUEEN = 9 * SQUARE_NB,
- PS_KING = 10 * SQUARE_NB,
- PS_NB = 11 * SQUARE_NB
+ PS_NONE = 0,
+ PS_W_PAWN = 0,
+ PS_B_PAWN = 1 * SQUARE_NB,
+ PS_W_KNIGHT = 2 * SQUARE_NB,
+ PS_B_KNIGHT = 3 * SQUARE_NB,
+ PS_W_BISHOP = 4 * SQUARE_NB,
+ PS_B_BISHOP = 5 * SQUARE_NB,
+ PS_W_ROOK = 6 * SQUARE_NB,
+ PS_B_ROOK = 7 * SQUARE_NB,
+ PS_W_QUEEN = 8 * SQUARE_NB,
+ PS_B_QUEEN = 9 * SQUARE_NB,
+ PS_KING = 10 * SQUARE_NB,
+ PS_NB = 11 * SQUARE_NB
};
static constexpr IndexType PieceSquareIndex[COLOR_NB][PIECE_NB] = {
// convention: W - us, B - them
// viewed from other side, W and B are reversed
- { PS_NONE, PS_W_PAWN, PS_W_KNIGHT, PS_W_BISHOP, PS_W_ROOK, PS_W_QUEEN, PS_KING, PS_NONE,
- PS_NONE, PS_B_PAWN, PS_B_KNIGHT, PS_B_BISHOP, PS_B_ROOK, PS_B_QUEEN, PS_KING, PS_NONE },
- { PS_NONE, PS_B_PAWN, PS_B_KNIGHT, PS_B_BISHOP, PS_B_ROOK, PS_B_QUEEN, PS_KING, PS_NONE,
- PS_NONE, PS_W_PAWN, PS_W_KNIGHT, PS_W_BISHOP, PS_W_ROOK, PS_W_QUEEN, PS_KING, PS_NONE }
- };
-
- // Orient a square according to perspective (rotates by 180 for black)
- static Square orient(Color perspective, Square s, Square ksq);
+ {PS_NONE, PS_W_PAWN, PS_W_KNIGHT, PS_W_BISHOP, PS_W_ROOK, PS_W_QUEEN, PS_KING, PS_NONE,
+ PS_NONE, PS_B_PAWN, PS_B_KNIGHT, PS_B_BISHOP, PS_B_ROOK, PS_B_QUEEN, PS_KING, PS_NONE},
+ {PS_NONE, PS_B_PAWN, PS_B_KNIGHT, PS_B_BISHOP, PS_B_ROOK, PS_B_QUEEN, PS_KING, PS_NONE,
+ PS_NONE, PS_W_PAWN, PS_W_KNIGHT, PS_W_BISHOP, PS_W_ROOK, PS_W_QUEEN, PS_KING, PS_NONE}};
// Index of a feature for a given king position and another piece on some square
- static IndexType make_index(Color perspective, Square s, Piece pc, Square ksq);
+ template<Color Perspective>
+ static IndexType make_index(Square s, Piece pc, Square ksq);
public:
// Feature name
// Number of feature dimensions
static constexpr IndexType Dimensions =
- static_cast<IndexType>(SQUARE_NB) * static_cast<IndexType>(PS_NB) / 2;
-
- static constexpr int KingBuckets[64] = {
- -1, -1, -1, -1, 31, 30, 29, 28,
- -1, -1, -1, -1, 27, 26, 25, 24,
- -1, -1, -1, -1, 23, 22, 21, 20,
- -1, -1, -1, -1, 19, 18, 17, 16,
- -1, -1, -1, -1, 15, 14, 13, 12,
- -1, -1, -1, -1, 11, 10, 9, 8,
- -1, -1, -1, -1, 7, 6, 5, 4,
- -1, -1, -1, -1, 3, 2, 1, 0
+ static_cast<IndexType>(SQUARE_NB) * static_cast<IndexType>(PS_NB) / 2;
+
+#define B(v) (v * PS_NB)
+ // clang-format off
+ static constexpr int KingBuckets[COLOR_NB][SQUARE_NB] = {
+ { B(28), B(29), B(30), B(31), B(31), B(30), B(29), B(28),
+ B(24), B(25), B(26), B(27), B(27), B(26), B(25), B(24),
+ B(20), B(21), B(22), B(23), B(23), B(22), B(21), B(20),
+ B(16), B(17), B(18), B(19), B(19), B(18), B(17), B(16),
+ B(12), B(13), B(14), B(15), B(15), B(14), B(13), B(12),
+ B( 8), B( 9), B(10), B(11), B(11), B(10), B( 9), B( 8),
+ B( 4), B( 5), B( 6), B( 7), B( 7), B( 6), B( 5), B( 4),
+ B( 0), B( 1), B( 2), B( 3), B( 3), B( 2), B( 1), B( 0) },
+ { B( 0), B( 1), B( 2), B( 3), B( 3), B( 2), B( 1), B( 0),
+ B( 4), B( 5), B( 6), B( 7), B( 7), B( 6), B( 5), B( 4),
+ B( 8), B( 9), B(10), B(11), B(11), B(10), B( 9), B( 8),
+ B(12), B(13), B(14), B(15), B(15), B(14), B(13), B(12),
+ B(16), B(17), B(18), B(19), B(19), B(18), B(17), B(16),
+ B(20), B(21), B(22), B(23), B(23), B(22), B(21), B(20),
+ B(24), B(25), B(26), B(27), B(27), B(26), B(25), B(24),
+ B(28), B(29), B(30), B(31), B(31), B(30), B(29), B(28) }
+ };
+ // clang-format on
+#undef B
+ // clang-format off
+ // Orient a square according to perspective (rotates by 180 for black)
+ static constexpr int OrientTBL[COLOR_NB][SQUARE_NB] = {
+ { SQ_H1, SQ_H1, SQ_H1, SQ_H1, SQ_A1, SQ_A1, SQ_A1, SQ_A1,
+ SQ_H1, SQ_H1, SQ_H1, SQ_H1, SQ_A1, SQ_A1, SQ_A1, SQ_A1,
+ SQ_H1, SQ_H1, SQ_H1, SQ_H1, SQ_A1, SQ_A1, SQ_A1, SQ_A1,
+ SQ_H1, SQ_H1, SQ_H1, SQ_H1, SQ_A1, SQ_A1, SQ_A1, SQ_A1,
+ SQ_H1, SQ_H1, SQ_H1, SQ_H1, SQ_A1, SQ_A1, SQ_A1, SQ_A1,
+ SQ_H1, SQ_H1, SQ_H1, SQ_H1, SQ_A1, SQ_A1, SQ_A1, SQ_A1,
+ SQ_H1, SQ_H1, SQ_H1, SQ_H1, SQ_A1, SQ_A1, SQ_A1, SQ_A1,
+ SQ_H1, SQ_H1, SQ_H1, SQ_H1, SQ_A1, SQ_A1, SQ_A1, SQ_A1 },
+ { SQ_H8, SQ_H8, SQ_H8, SQ_H8, SQ_A8, SQ_A8, SQ_A8, SQ_A8,
+ SQ_H8, SQ_H8, SQ_H8, SQ_H8, SQ_A8, SQ_A8, SQ_A8, SQ_A8,
+ SQ_H8, SQ_H8, SQ_H8, SQ_H8, SQ_A8, SQ_A8, SQ_A8, SQ_A8,
+ SQ_H8, SQ_H8, SQ_H8, SQ_H8, SQ_A8, SQ_A8, SQ_A8, SQ_A8,
+ SQ_H8, SQ_H8, SQ_H8, SQ_H8, SQ_A8, SQ_A8, SQ_A8, SQ_A8,
+ SQ_H8, SQ_H8, SQ_H8, SQ_H8, SQ_A8, SQ_A8, SQ_A8, SQ_A8,
+ SQ_H8, SQ_H8, SQ_H8, SQ_H8, SQ_A8, SQ_A8, SQ_A8, SQ_A8,
+ SQ_H8, SQ_H8, SQ_H8, SQ_H8, SQ_A8, SQ_A8, SQ_A8, SQ_A8 }
};
+ // clang-format on
// Maximum number of simultaneously active features.
static constexpr IndexType MaxActiveDimensions = 32;
- using IndexList = ValueList<IndexType, MaxActiveDimensions>;
+ using IndexList = ValueList<IndexType, MaxActiveDimensions>;
// Get a list of indices for active features
- static void append_active_indices(
- const Position& pos,
- Color perspective,
- IndexList& active);
+ template<Color Perspective>
+ static void append_active_indices(const Position& pos, IndexList& active);
// Get a list of indices for recently changed features
- static void append_changed_indices(
- Square ksq,
- const DirtyPiece& dp,
- Color perspective,
- IndexList& removed,
- IndexList& added
- );
+ template<Color Perspective>
+ static void
+ append_changed_indices(Square ksq, const DirtyPiece& dp, IndexList& removed, IndexList& added);
// Returns the cost of updating one perspective, the most costly one.
// Assumes no refresh needed.
// Returns whether the change stored in this StateInfo means that
// a full accumulator refresh is required.
static bool requires_refresh(const StateInfo* st, Color perspective);
- };
+};
} // namespace Stockfish::Eval::NNUE::Features
-#endif // #ifndef NNUE_FEATURES_HALF_KA_V2_HM_H_INCLUDED
+#endif // #ifndef NNUE_FEATURES_HALF_KA_V2_HM_H_INCLUDED
projects / stockfish / blobdiff