/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
- Copyright (C) 2015-2019 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
+ 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 UCI_H_INCLUDED
#define UCI_H_INCLUDED
+#include <cstddef>
+#include <iosfwd>
#include <map>
#include <string>
#include "types.h"
+namespace Stockfish {
+
class Position;
namespace UCI {
+// Normalizes the internal value as reported by evaluate or search
+// to the UCI centipawn result used in output. This value is derived from
+// the win_rate_model() such that Stockfish outputs an advantage of
+// "100 centipawns" for a position if the engine has a 50% probability to win
+// from this position in self-play at fishtest LTC time control.
+const int NormalizeToPawnValue = 328;
+
class Option;
-/// Custom comparator because UCI options should be case insensitive
+// Define a custom comparator, because the UCI options should be case-insensitive
struct CaseInsensitiveLess {
- bool operator() (const std::string&, const std::string&) const;
+ bool operator()(const std::string&, const std::string&) const;
};
-/// Our options container is actually a std::map
-typedef std::map<std::string, Option, CaseInsensitiveLess> OptionsMap;
+// The options container is defined as a std::map
+using OptionsMap = std::map<std::string, Option, CaseInsensitiveLess>;
-/// Option class implements an option as defined by UCI protocol
+// The Option class implements each option as specified by the UCI protocol
class Option {
- typedef void (*OnChange)(const Option&);
+ using OnChange = void (*)(const Option&);
-public:
- Option(OnChange = nullptr);
- Option(bool v, OnChange = nullptr);
- Option(const char* v, OnChange = nullptr);
- Option(double v, int minv, int maxv, OnChange = nullptr);
- Option(const char* v, const char* cur, OnChange = nullptr);
+ public:
+ Option(OnChange = nullptr);
+ Option(bool v, OnChange = nullptr);
+ Option(const char* v, OnChange = nullptr);
+ Option(double v, int minv, int maxv, OnChange = nullptr);
+ Option(const char* v, const char* cur, OnChange = nullptr);
- Option& operator=(const std::string&);
- void operator<<(const Option&);
- operator double() const;
- operator std::string() const;
- bool operator==(const char*) const;
+ Option& operator=(const std::string&);
+ void operator<<(const Option&);
+ operator int() const;
+ operator std::string() const;
+ bool operator==(const char*) const;
-private:
- friend std::ostream& operator<<(std::ostream&, const OptionsMap&);
+ private:
+ friend std::ostream& operator<<(std::ostream&, const OptionsMap&);
- std::string defaultValue, currentValue, type;
- int min, max;
- size_t idx;
- OnChange on_change;
+ std::string defaultValue, currentValue, type;
+ int min, max;
+ size_t idx;
+ OnChange on_change;
};
-void init(OptionsMap&);
-void loop(int argc, char* argv[]);
+void init(OptionsMap&);
+void loop(int argc, char* argv[]);
+int to_cp(Value v);
std::string value(Value v);
std::string square(Square s);
std::string move(Move m, bool chess960);
-std::string pv(const Position& pos, Depth depth, Value alpha, Value beta);
-Move to_move(const Position& pos, std::string& str);
+std::string pv(const Position& pos, Depth depth);
+std::string wdl(Value v, int ply);
+Move to_move(const Position& pos, std::string& str);
-} // namespace UCI
+} // namespace UCI
extern UCI::OptionsMap Options;
-#endif // #ifndef UCI_H_INCLUDED
+} // namespace Stockfish
+
+#endif // #ifndef UCI_H_INCLUDED