78bb1d1571
0172df743 CMakeLists: Only add tests if MASTER_PROJECT 52e8dff62 0.1.11 fc8d745cc container: hmap fixups 5b5c0130d memory: Add overaligned_unique_ptr c7c9bbd17 mcl: Increment version to 0.1.10 678aa32a8 assert: Handle expr strings separately b38a9d2ef tests: Update to Catch 3.0.1 8aeacfe32 mcl: Increment version to 0.1.9 b468a2ab5 mcl: meta_byte: Split off meta_byte_group d3ae1ae47 mcl: ihmap: Implement inline variant of hmap 5cbfe6eed mcl: hmap: Split detail into headers ee7467677 mcl: hmap: Better default hash f1d902ce9 mcl: hash: Add xmrx 322a221f0 mcl: hmap: Bugfix skip_empty_or_tombstone 689f393f7 mcl: hmap: x64 implementation fa6ff746a mcl: hmap: Add generic meta_byte_group implementation 91e3073ad mcl: hmap: Add more member functions 4998335a5 mcl: Install only if master project 7ff4d2549 mcl: hmap prototype 416a2c6b5 mcl: clang-format: Adopt WebKit style bracing d5a46fa70 mcl/assert: Flush stderr e3b6cc79e externals: Update mcl to 0.1.7 190c68475 mcl: Build as PIC git-subtree-dir: externals/mcl git-subtree-split: 0172df74316351868c215f735e5a2538b10d71fb
32 lines
614 B
C++
32 lines
614 B
C++
// This file is part of the mcl project.
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// Copyright (c) 2022 merryhime
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// SPDX-License-Identifier: MIT
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// Reference: http://jonkagstrom.com/bit-mixer-construction/
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#pragma once
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#include <functional>
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#include "mcl/bit/rotate.hpp"
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#include "mcl/stdint.hpp"
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namespace mcl::hash {
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constexpr size_t xmrx(size_t x)
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{
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x ^= x >> 32;
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x *= 0xff51afd7ed558ccd;
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x ^= bit::rotate_right(x, 47) ^ bit::rotate_right(x, 23);
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return x;
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}
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template<typename T>
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struct avalanche_xmrx {
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size_t operator()(const T& value)
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{
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return xmrx(std::hash<T>{}(value));
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}
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};
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} // namespace mcl::hash
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