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  Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
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  Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
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  Copyright (C) 2015-2016 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
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  Copyright (C) 2015-2018 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
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  Stockfish is free software: you can redistribute it and/or modify
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  Stockfish is free software: you can redistribute it and/or modify
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  it under the terms of the GNU General Public License as published by
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  it under the terms of the GNU General Public License as published by
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  the Free Software Foundation, either version 3 of the License, or
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  the Free Software Foundation, either version 3 of the License, or
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  (at your option) any later version.
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  (at your option) any later version.
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/// 'On change' actions, triggered by an option's value change
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/// 'On change' actions, triggered by an option's value change
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void on_clear_hash(const Option&) { Search::clear(); }
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void on_clear_hash(const Option&) { Search::clear(); }
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void on_hash_size(const Option& o) { TT.resize(o); }
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void on_hash_size(const Option& o) { TT.resize(o); }
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void on_logger(const Option& o) { start_logger(o); }
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void on_logger(const Option& o) { start_logger(o); }
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void on_threads(const Option&) { Threads.read_uci_options(); }
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void on_threads(const Option& o) { Threads.set(o); }
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void on_tb_path(const Option& o) { Tablebases::init(o); }
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void on_tb_path(const Option& o) { Tablebases::init(o); }
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/// Our case insensitive less() function as required by UCI protocol
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/// Our case insensitive less() function as required by UCI protocol
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bool CaseInsensitiveLess::operator() (const string& s1, const string& s2) const {
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bool CaseInsensitiveLess::operator() (const string& s1, const string& s2) const {
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/// init() initializes the UCI options to their hard-coded default values
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/// init() initializes the UCI options to their hard-coded default values
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void init(OptionsMap& o) {
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void init(OptionsMap& o) {
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- 
 
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  // at most 2^32 clusters.
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  const int MaxHashMB = Is64Bit ? 1024 * 1024 : 2048;
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  const int MaxHashMB = Is64Bit ? 131072 : 2048;
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  o["Debug Log File"]        << Option("", on_logger);
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  o["Debug Log File"]        << Option("", on_logger);
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  o["Contempt"]              << Option(0, -100, 100);
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  o["Contempt"]              << Option(20, -100, 100);
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  o["Threads"]               << Option(1, 1, 128, on_threads);
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  o["Threads"]               << Option(1, 1, 512, on_threads);
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  o["Hash"]                  << Option(16, 1, MaxHashMB, on_hash_size);
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  o["Hash"]                  << Option(16, 1, MaxHashMB, on_hash_size);
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  o["Clear Hash"]            << Option(on_clear_hash);
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  o["Clear Hash"]            << Option(on_clear_hash);
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  o["Ponder"]                << Option(false);
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  o["Ponder"]                << Option(false);
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  o["MultiPV"]               << Option(1, 1, 500);
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  o["MultiPV"]               << Option(1, 1, 500);
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  o["Skill Level"]           << Option(20, 0, 20);
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  o["Skill Level"]           << Option(20, 0, 20);