mirror of https://git.suyu.dev/suyu/suyu
Merge pull request #9989 from Morph1984/boost-1.79-exact
CMakeLists: Use boost 1.79.0 insteadmerge-requests/60/head
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// SPDX-FileCopyrightText: 2005-2014 Daniel James
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// SPDX-FileCopyrightText: 2016 Austin Appleby
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// SPDX-License-Identifier: BSL-1.0
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#include <array>
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#include <cstdint>
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#include <limits>
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#include <type_traits>
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#include <vector>
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namespace Common {
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namespace detail {
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template <typename T>
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requires std::is_unsigned_v<T>
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inline std::size_t HashValue(T val) {
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const unsigned int size_t_bits = std::numeric_limits<std::size_t>::digits;
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const unsigned int length =
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(std::numeric_limits<T>::digits - 1) / static_cast<unsigned int>(size_t_bits);
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std::size_t seed = 0;
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for (unsigned int i = length * size_t_bits; i > 0; i -= size_t_bits) {
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seed ^= static_cast<size_t>(val >> i) + (seed << 6) + (seed >> 2);
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}
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seed ^= static_cast<size_t>(val) + (seed << 6) + (seed >> 2);
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return seed;
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}
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template <size_t Bits>
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struct HashCombineImpl {
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template <typename T>
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static inline T fn(T seed, T value) {
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seed ^= value + 0x9e3779b9 + (seed << 6) + (seed >> 2);
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return seed;
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}
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};
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template <>
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struct HashCombineImpl<64> {
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static inline std::uint64_t fn(std::uint64_t h, std::uint64_t k) {
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const std::uint64_t m = (std::uint64_t(0xc6a4a793) << 32) + 0x5bd1e995;
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const int r = 47;
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k *= m;
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k ^= k >> r;
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k *= m;
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h ^= k;
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h *= m;
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// Completely arbitrary number, to prevent 0's
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// from hashing to 0.
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h += 0xe6546b64;
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return h;
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}
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};
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} // namespace detail
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template <typename T>
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inline void HashCombine(std::size_t& seed, const T& v) {
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seed = detail::HashCombineImpl<sizeof(std::size_t) * CHAR_BIT>::fn(seed, detail::HashValue(v));
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}
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template <typename It>
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inline std::size_t HashRange(It first, It last) {
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std::size_t seed = 0;
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for (; first != last; ++first) {
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HashCombine<typename std::iterator_traits<It>::value_type>(seed, *first);
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}
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return seed;
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}
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template <typename T, size_t Size>
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std::size_t HashValue(const std::array<T, Size>& v) {
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return HashRange(v.cbegin(), v.cend());
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}
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template <typename T, typename Allocator>
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std::size_t HashValue(const std::vector<T, Allocator>& v) {
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return HashRange(v.cbegin(), v.cend());
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}
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} // namespace Common
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// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <catch2/catch_test_macros.hpp>
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#include "common/common_types.h"
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#include "common/container_hash.h"
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TEST_CASE("ContainerHash", "[common]") {
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constexpr std::array<u8, 32> U8Values{
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114, 10, 238, 189, 199, 242, 86, 96, 53, 193, 195, 247, 249, 56, 253, 61,
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205, 3, 172, 4, 210, 197, 43, 72, 103, 8, 99, 89, 5, 97, 68, 196,
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};
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constexpr std::array<u16, 32> U16Values{
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61586, 49151, 3313, 11641, 31695, 54795, 46764, 20965, 23287, 14039, 19265,
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49093, 58932, 22518, 27139, 42825, 57417, 54237, 48057, 14586, 42813, 32994,
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33970, 45501, 5619, 15895, 33227, 27509, 25391, 37275, 60218, 17599,
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};
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constexpr std::array<u32, 32> U32Values{
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3838402410, 2029146863, 1730869921, 985528872, 186773874, 2094639868, 3324775932,
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1795512424, 2571165571, 3256934519, 2358691590, 2752682538, 1484336451, 378124520,
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3463015699, 3395942161, 1263211979, 3473632889, 3039822212, 2068707357, 2223837919,
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1823232191, 1583884041, 1264393380, 4087566993, 3188607101, 3933680362, 1464520765,
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1786838406, 1311734848, 2773642241, 3993641692,
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};
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constexpr std::array<u64, 32> U64Values{
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5908025796157537817, 10947547850358315100, 844798943576724669, 7999662937458523703,
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4006550374705895164, 1832550525423503632, 9323088254855830976, 12028890075598379412,
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6021511300787826236, 7864675007938747948, 18099387408859708806, 6438638299316820708,
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9029399285648501543, 18195459433089960253, 17214335092761966083, 5549347964591337833,
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14899526073304962015, 5058883181561464475, 7436311795731206973, 7535129567768649864,
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1287169596809258072, 8237671246353565927, 1715230541978016153, 8443157615068813300,
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6098675262328527839, 704652094100376853, 1303411723202926503, 7808312933946424854,
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6863726670433556594, 9870361541383217495, 9273671094091079488, 17541434976160119010,
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};
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REQUIRE(Common::HashValue(U8Values) == 5867183267093890552);
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REQUIRE(Common::HashValue(U16Values) == 9594135570564347135);
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REQUIRE(Common::HashValue(U32Values) == 13123757214696618460);
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REQUIRE(Common::HashValue(U64Values) == 7296500016546938380);
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}
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