#ifndef TUNE_H_INCLUDED
#define TUNE_H_INCLUDED
+#include <cstddef>
#include <memory>
#include <string>
#include <type_traits>
+#include <utility>
#include <vector>
namespace Stockfish {
+enum Value : int;
using Range = std::pair<int, int>; // Option's min-max values
using RangeFun = Range (int);