/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- Copyright (C) 2004-2022 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
#include <sstream>
#include <string>
+#include "benchmark.h"
#include "evaluate.h"
#include "movegen.h"
#include "position.h"
#include "tt.h"
#include "uci.h"
#include "syzygy/tbprobe.h"
+#include "nnue/evaluate_nnue.h"
using namespace std;
namespace Stockfish {
-extern vector<string> setup_bench(const Position&, istream&);
-
namespace {
// FEN string for the initial position in standard chess
uint64_t num, nodes = 0, cnt = 1;
vector<string> list = setup_bench(pos, args);
- num = count_if(list.begin(), list.end(), [](string s) { return s.find("go ") == 0 || s.find("eval") == 0; });
+ num = count_if(list.begin(), list.end(), [](const string& s) { return s.find("go ") == 0 || s.find("eval") == 0; });
TimePoint elapsed = now();
// The coefficients of a third-order polynomial fit is based on the fishtest data
// for two parameters that need to transform eval to the argument of a logistic
// function.
- constexpr double as[] = { 1.04790516, -8.58534089, 39.42615625, 316.17524816};
- constexpr double bs[] = { -3.57324784, 22.28816201, -35.47480551, 85.60617701 };
+ constexpr double as[] = { 0.38036525, -2.82015070, 23.17882135, 307.36768407};
+ constexpr double bs[] = { -2.29434733, 13.27689788, -14.26828904, 63.45318330 };
// Enforce that NormalizeToPawnValue corresponds to a 50% win rate at ply 64
static_assert(UCI::NormalizeToPawnValue == int(as[0] + as[1] + as[2] + as[3]));
}
+/// Turns a Value to an integer centipawn number,
+/// without treatment of mate and similar special scores.
+int UCI::to_cp(Value v) {
+
+ return 100 * v / UCI::NormalizeToPawnValue;
+}
+
/// UCI::value() converts a Value to a string by adhering to the UCI protocol specification:
///
/// cp <x> The score from the engine's point of view in centipawns.
stringstream ss;
- if (abs(v) < VALUE_MATE_IN_MAX_PLY)
- ss << "cp " << v * 100 / NormalizeToPawnValue;
+ if (abs(v) < VALUE_TB_WIN_IN_MAX_PLY)
+ ss << "cp " << UCI::to_cp(v);
+ else if (abs(v) < VALUE_MATE_IN_MAX_PLY)
+ {
+ const int ply = VALUE_MATE_IN_MAX_PLY - 1 - std::abs(v); // recompute ss->ply
+ ss << "cp " << (v > 0 ? 20000 - ply : -20000 + ply);
+ }
else
ss << "mate " << (v > 0 ? VALUE_MATE - v + 1 : -VALUE_MATE - v) / 2;
string UCI::move(Move m, bool chess960) {
- Square from = from_sq(m);
- Square to = to_sq(m);
-
if (m == MOVE_NONE)
return "(none)";
if (m == MOVE_NULL)
return "0000";
+ Square from = from_sq(m);
+ Square to = to_sq(m);
+
if (type_of(m) == CASTLING && !chess960)
to = make_square(to > from ? FILE_G : FILE_C, rank_of(from));