chess::game::ThreefoldChecker Struct Reference

#include <libchess/game/ThreefoldChecker.hpp>

Public Types
using	HashValue = std::uint64_t

Public Member Functions
constexpr auto	is_threefold () const noexcept -> bool
constexpr void	push (HashValue newHash)
constexpr void	reset (HashValue initialPositionHash)

Detailed Description

This struct keeps a history of Zobrist hash values to detect threefold repetitions.

Definition at line 33 of file ThreefoldChecker.hpp.

Member Typedef Documentation

HashValue

using chess::game::ThreefoldChecker::HashValue = std::uint64_t

Definition at line 34 of file ThreefoldChecker.hpp.

Member Function Documentation

is_threefold()

auto chess::game::ThreefoldChecker::is_threefold ( ) const -> bool

nodiscardconstexprnoexcept

Returns true if the last call to push() created a threefold repetition in the history.

Definition at line 92 of file ThreefoldChecker.hpp.

push()

void chess::game::ThreefoldChecker::push ( HashValue newHash )

constexpr

Pushes a new hash value into the history.

Definition at line 76 of file ThreefoldChecker.hpp.

reset()

void chess::game::ThreefoldChecker::reset ( HashValue initialPositionHash )

constexpr

Clears the history, inserting a single hash value.

Definition at line 70 of file ThreefoldChecker.hpp.

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The documentation for this struct was generated from the following file:

• libchess/include/libchess/game/ThreefoldChecker.hpp