/*
- Glaurung, a UCI chess playing engine.
- Copyright (C) 2004-2008 Tord Romstad
+ Stockfish, a UCI chess playing engine derived from Glaurung 2.1
+ Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
+ Copyright (C) 2008 Marco Costalba
- Glaurung is free software: you can redistribute it and/or modify
+ Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
- Glaurung is distributed in the hope that it will be useful,
+ Stockfish is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
/// Types
///
- enum OptionType { SPIN, COMBO, CHECK, STRING, BUTTON, OPTION_TYPE_NONE };
+ enum OptionType { SPIN, COMBO, CHECK, STRING, BUTTON };
typedef std::vector<std::string> ComboValues;
- struct Option
- {
+ struct Option {
+
std::string name, defaultValue, currentValue;
OptionType type;
int minValue, maxValue;
ComboValues comboValues;
- // Helper to convert a bool or an int to a std::string
- template<typename T> std::string stringify(const T& v);
-
Option(const char* name, const char* defaultValue, OptionType = STRING);
- Option(const char* name, bool defaultValue);
+ Option(const char* name, bool defaultValue, OptionType = CHECK);
Option(const char* name, int defaultValue, int minValue, int maxValue);
};
/// Constants
///
- // load-defaults populates the options map with the hard
- // coded options names and their default values.
+ // load_defaults populates the options vector with the hard
+ // coded names and default values.
+
void load_defaults(Options& o) {
o.push_back(Option("Use Search Log", false));
o.push_back(Option("Pawn Structure (Endgame)", 100, 0, 200));
o.push_back(Option("Passed Pawns (Middle Game)", 100, 0, 200));
o.push_back(Option("Passed Pawns (Endgame)", 100, 0, 200));
+ o.push_back(Option("Space", 100, 0, 200));
o.push_back(Option("Aggressiveness", 100, 0, 200));
o.push_back(Option("Cowardice", 100, 0, 200));
o.push_back(Option("King Safety Curve", "Quadratic", COMBO));
o.push_back(Option("King Safety X Intercept", 0, 0, 20));
o.push_back(Option("King Safety Max Slope", 30, 10, 100));
o.push_back(Option("King Safety Max Value", 500, 100, 1000));
- o.push_back(Option("Queen Contact Check Bonus", 4, 0, 8));
- o.push_back(Option("Rook Contact Check Bonus", 2, 0, 4));
+ o.push_back(Option("Queen Contact Check Bonus", 3, 0, 8));
o.push_back(Option("Queen Check Bonus", 2, 0, 4));
o.push_back(Option("Rook Check Bonus", 1, 0, 4));
o.push_back(Option("Bishop Check Bonus", 1, 0, 4));
o.push_back(Option("Check Extension (non-PV nodes)", 1, 0, 2));
o.push_back(Option("Single Reply Extension (PV nodes)", 2, 0, 2));
o.push_back(Option("Single Reply Extension (non-PV nodes)", 2, 0, 2));
- o.push_back(Option("Mate Threat Extension (PV nodes)", 2, 0, 2));
+ o.push_back(Option("Mate Threat Extension (PV nodes)", 0, 0, 2));
o.push_back(Option("Mate Threat Extension (non-PV nodes)", 0, 0, 2));
o.push_back(Option("Pawn Push to 7th Extension (PV nodes)", 1, 0, 2));
o.push_back(Option("Pawn Push to 7th Extension (non-PV nodes)", 1, 0, 2));
o.push_back(Option("Selective Plies", 7, 0, 10));
o.push_back(Option("Futility Pruning (Main Search)", true));
o.push_back(Option("Futility Pruning (Quiescence Search)", true));
- o.push_back(Option("Futility Margin 0", 50, 0, 1000));
- o.push_back(Option("Futility Margin 1", 100, 0, 1000));
- o.push_back(Option("Futility Margin 2", 300, 0, 1000));
+ o.push_back(Option("Futility Margin (Quiescence Search)", 50, 0, 1000));
+ o.push_back(Option("Futility Margin Scale Factor (Main Search)", 100, 0, 1000));
o.push_back(Option("Maximum Razoring Depth", 3, 0, 4));
o.push_back(Option("Razoring Margin", 300, 150, 600));
+ o.push_back(Option("LSN filtering", true));
+ o.push_back(Option("LSN Time Margin (sec)", 4, 1, 10));
+ o.push_back(Option("LSN Value Margin", 200, 100, 600));
o.push_back(Option("Randomness", 0, 0, 10));
o.push_back(Option("Minimum Split Depth", 4, 4, 7));
o.push_back(Option("Maximum Number of Threads per Split Point", 5, 4, 8));
o.push_back(Option("Threads", 1, 1, 8));
o.push_back(Option("Hash", 32, 4, 4096));
- o.push_back(Option("Clear Hash", false));
+ o.push_back(Option("Clear Hash", false, BUTTON));
o.push_back(Option("Ponder", true));
o.push_back(Option("OwnBook", true));
o.push_back(Option("MultiPV", 1, 1, 500));
o.push_back(Option("UCI_Chess960", false));
}
-
///
/// Variables
///
Options options;
// Local functions
- template<typename T> T get_option_value(const std::string& optionName);
- Options::iterator option_from_name(const std::string& optionName);
+ Options::iterator option_with_name(const std::string& optionName);
+
+ // stringify converts a value of type T to a std::string
+ template<typename T>
+ std::string stringify(const T& v) {
+
+ std::ostringstream ss;
+ ss << v;
+ return ss.str();
+ }
+
+ // We want conversion from a bool value to be "true" or "false",
+ // not "1" or "0", so add a specialization for bool type.
+ template<>
+ std::string stringify<bool>(const bool& v) {
+
+ return v ? "true" : "false";
+ }
+
+ // get_option_value implements the various get_option_value_<type>
+ // functions defined later, because only the option value
+ // type changes a template seems a proper solution.
+
+ template<typename T>
+ T get_option_value(const std::string& optionName) {
+
+ T ret = T();
+ Options::iterator it = option_with_name(optionName);
+
+ if (it != options.end())
+ {
+ std::istringstream ss(it->currentValue);
+ ss >> ret;
+ } else
+ assert(false);
+
+ return ret;
+ }
+
+ // Unfortunatly we need a specialization to convert "false" and "true"
+ // to proper bool values. The culprit is that we use a non standard way
+ // to store a bool value in a string, in particular we use "false" and
+ // "true" instead of "0" and "1" due to how UCI protocol works.
+
+ template<>
+ bool get_option_value<bool>(const std::string& optionName) {
+ Options::iterator it = option_with_name(optionName);
+
+ return it != options.end() && it->currentValue == "true";
+ }
}
////
// According to Ken Dail's tests, Glaurung plays much better with 7 than
// with 8 threads. This is weird, but it is probably difficult to find out
// why before I have a 8-core computer to experiment with myself.
- Options::iterator it = option_from_name("Threads");
+ Options::iterator it = option_with_name("Threads");
assert(it != options.end());
- it->defaultValue = Min(cpu_count(), 7);
- it->currentValue = Min(cpu_count(), 7);
+ it->defaultValue = stringify(Min(cpu_count(), 7));
+ it->currentValue = stringify(Min(cpu_count(), 7));
// Increase the minimum split depth when the number of CPUs is big.
// It would probably be better to let this depend on the number of threads
// instead.
if(cpu_count() > 4)
{
- it = option_from_name("Minimum Split Depth");
+ it = option_with_name("Minimum Split Depth");
assert(it != options.end());
- it->defaultValue = 6;
- it->currentValue = 6;
+ it->defaultValue = "6";
+ it->currentValue = "6";
}
}
void set_option_value(const std::string& optionName,
const std::string& newValue) {
- Options::iterator it = option_from_name(optionName);
+ Options::iterator it = option_with_name(optionName);
if (it != options.end())
it->currentValue = newValue;
namespace {
- // methods and c'tors of Option class.
-
- template<typename T>
- std::string Option::stringify(const T& v)
- {
- std::ostringstream ss;
- ss << v;
-
- return ss.str();
- }
+ // Define constructors of Option class.
Option::Option(const char* nm, const char* def, OptionType t)
: name(nm), defaultValue(def), currentValue(def), type(t), minValue(0), maxValue(0) {}
- Option::Option(const char* nm, bool def)
- : name(nm), defaultValue(stringify(def)), currentValue(stringify(def)), type(CHECK), minValue(0), maxValue(0) {}
+ Option::Option(const char* nm, bool def, OptionType t)
+ : name(nm), defaultValue(stringify(def)), currentValue(stringify(def)), type(t), minValue(0), maxValue(0) {}
Option::Option(const char* nm, int def, int minv, int maxv)
: name(nm), defaultValue(stringify(def)), currentValue(stringify(def)), type(SPIN), minValue(minv), maxValue(maxv) {}
+ // option_with_name() tries to find a UCI option with a given
+ // name. It returns an iterator to the UCI option or to options.end(),
+ // depending on whether an option with the given name exists.
- // get_option_value is the implementation of the various
- // get_option_value_<type>, because only the option value
- // type changes a template is the proper solution.
-
- template<typename T>
- T get_option_value(const std::string& optionName) {
-
- T ret;
-
- Options::iterator it = option_from_name(optionName);
-
- if (it != options.end())
- {
- std::istringstream ss(it->currentValue);
- ss >> ret;
- }
- return ret;
- }
-
-
- // option_from_name returns an iterator to the option
- // with name optionName.
-
- Options::iterator option_from_name(const std::string& optionName) {
+ Options::iterator option_with_name(const std::string& optionName) {
for (Options::iterator it = options.begin(); it != options.end(); ++it)
if (it->name == optionName)
return options.end();
}
-
}
projects / stockfish / blobdiff