stellar

Template transposition table

2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/ CMakeLists.txt b/ CMakeLists.txt

@@ -3,7 +3,7 @@ set(CMAKE_EXPORT_COMPILE_COMMANDS ON) project( Stellar

VERSION 1.3.6

VERSION 1.3.7

DESCRIPTION "Chess engine written in C++" HOMEPAGE_URL https://git.dimitrijedobrota.com/stellar.git LANGUAGES CXX

diff --git a/ src/engine/engine.cpp b/ src/engine/engine.cpp

@@ -41,15 +41,12 @@ struct Hashe { Flag flag; };

class TTable {

template <U64 size> class TTable_internal {

public: static inline constexpr const int16_t unknown = 32500;

TTable() = default;

TTable(U64 size) : table(size, {0}) {}

void clear() { table.clear(); };

int16_t read(const Board &board, int ply, Move *best, int16_t alpha, int16_t beta, uint8_t depth) const {

static void clear() { memset(table.data(), 0x00, size * sizeof(Hashe)); };

static int16_t read(const Board &board, int ply, Move *best, int16_t alpha, int16_t beta, uint8_t depth) {

U64 hash = board.get_hash(); const Hashe &phashe = table[hash % table.size()]; if (phashe.key == hash) {

@@ -68,7 +65,8 @@ class TTable { return unknown; }

void write(const Board &board, int ply, Move best, int16_t score, uint8_t depth, Hashe::Flag flag) {

static void write(const Board &board, int ply, Move best, int16_t score, uint8_t depth,

Hashe::Flag flag) {

U64 hash = board.get_hash(); Hashe &phashe = table[hash % table.size()];

@@ -79,9 +77,11 @@ class TTable { } private:

std::vector<Hashe> table;

static std::array<Hashe, size> table;

};

template <U64 size> std::array<Hashe, size> TTable_internal<size>::table;

class PVTable { public: Move best(uint8_t ply = 0) { return table[0][ply]; }

@@ -107,9 +107,11 @@ std::ostream &operator<<(std::ostream &os, const PVTable &pvtable) { return os; }

using TTable = TTable_internal<C64(0x2FB4377)>;

TTable ttable;

static const uci::Settings *settings = nullptr; static Board board;

static TTable ttable;

static repetition::Table rtable; static PVTable pvtable;

@@ -403,9 +405,7 @@ Move search_position(const uci::Settings &settingsr) { int16_t alpha = -SCORE_INFINITY, beta = SCORE_INFINITY; settings = &settingsr;

if (settings->newgame) {

ttable = TTable(C64(0x2FB4377));

}

if (settings->newgame) ttable.clear();

rtable.clear(); board = settings->board;