/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- Copyright (C) 2004-2021 The Stockfish developers (see AUTHORS file)
+ Copyright (C) 2004-2022 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 "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 selfplay at fishtest LTC time control.
+const int NormalizeToPawnValue = 348;
+
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;
};
-/// Our options container is actually a std::map
+/// The options container is defined as a std::map
typedef std::map<std::string, Option, CaseInsensitiveLess> OptionsMap;
-/// 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&);
extern UCI::OptionsMap Options;
+} // namespace Stockfish
+
#endif // #ifndef UCI_H_INCLUDED