2 Stockfish, a UCI chess playing engine derived from Glaurung 2.1
3 Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
5 Stockfish is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
10 Stockfish is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
19 #ifndef UCI_H_INCLUDED
20 #define UCI_H_INCLUDED
35 // Normalizes the internal value as reported by evaluate or search
36 // to the UCI centipawn result used in output. This value is derived from
37 // the win_rate_model() such that Stockfish outputs an advantage of
38 // "100 centipawns" for a position if the engine has a 50% probability to win
39 // from this position in self-play at fishtest LTC time control.
40 const int NormalizeToPawnValue = 328;
44 // Define a custom comparator, because the UCI options should be case-insensitive
45 struct CaseInsensitiveLess {
46 bool operator()(const std::string&, const std::string&) const;
49 // The options container is defined as a std::map
50 using OptionsMap = std::map<std::string, Option, CaseInsensitiveLess>;
52 // The Option class implements each option as specified by the UCI protocol
55 using OnChange = void (*)(const Option&);
58 Option(OnChange = nullptr);
59 Option(bool v, OnChange = nullptr);
60 Option(const char* v, OnChange = nullptr);
61 Option(double v, int minv, int maxv, OnChange = nullptr);
62 Option(const char* v, const char* cur, OnChange = nullptr);
64 Option& operator=(const std::string&);
65 void operator<<(const Option&);
67 operator std::string() const;
68 bool operator==(const char*) const;
71 friend std::ostream& operator<<(std::ostream&, const OptionsMap&);
73 std::string defaultValue, currentValue, type;
79 void init(OptionsMap&);
80 void loop(int argc, char* argv[]);
82 std::string value(Value v);
83 std::string square(Square s);
84 std::string move(Move m, bool chess960);
85 std::string pv(const Position& pos, Depth depth);
86 std::string wdl(Value v, int ply);
87 Move to_move(const Position& pos, std::string& str);
91 extern UCI::OptionsMap Options;
93 } // namespace Stockfish
95 #endif // #ifndef UCI_H_INCLUDED