pcsx2/common/HashCombine.h

27 lines
1021 B
C++

/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2021 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 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.
*
* You should have received a copy of the GNU General Public License along with PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <functional>
#include <utility>
template <typename T, typename... Rest>
static inline void HashCombine(std::size_t& seed, const T& v, Rest&&... rest)
{
seed ^= std::hash<T>{}(v) + 0x9e3779b9u + (seed << 6) + (seed >> 2);
(HashCombine(seed, std::forward<Rest>(rest)), ...);
}