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C++23 utilities for Unreal Engine.
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Namespaces | Concepts | Functions | Variables
ConstexprXXH3.h File Reference
#include <cstddef>
#include <cstdint>
#include <iterator>
#include <type_traits>
#include <utility>

Go to the source code of this file.

Namespaces

namespace  constexpr_xxh3
 

Concepts

concept  constexpr_xxh3::ByteType
 
concept  constexpr_xxh3::BytePtrType
 
concept  constexpr_xxh3::BytesType
 

Functions

constexpr uint32_t constexpr_xxh3::swap32 (uint32_t x) noexcept
 
template<typename T >
constexpr uint32_t constexpr_xxh3::readLE32 (const T *ptr) noexcept
 
constexpr uint64_t constexpr_xxh3::swap64 (uint64_t x) noexcept
 
template<typename T >
constexpr uint64_t constexpr_xxh3::readLE64 (const T *ptr) noexcept
 
constexpr void constexpr_xxh3::writeLE64 (uint8_t *dst, uint64_t v) noexcept
 
constexpr std::pair< uint64_t, uint64_t > constexpr_xxh3::mult64to128 (uint64_t lhs, uint64_t rhs) noexcept
 
constexpr uint64_t constexpr_xxh3::mul128_fold64 (uint64_t lhs, uint64_t rhs) noexcept
 
constexpr uint64_t constexpr_xxh3::XXH64_avalanche (uint64_t h) noexcept
 
constexpr uint64_t constexpr_xxh3::XXH3_avalanche (uint64_t h) noexcept
 
constexpr uint64_t constexpr_xxh3::rrmxmx (uint64_t h, uint64_t len) noexcept
 
template<typename T , typename S >
constexpr uint64_t constexpr_xxh3::mix16B (const T *input, const S *secret, uint64_t seed) noexcept
 
template<typename T , typename S >
constexpr void constexpr_xxh3::accumulate_512 (uint64_t *acc, const T *input, const S *secret) noexcept
 
template<typename T , typename S >
constexpr uint64_t constexpr_xxh3::hashLong_64b_internal (const T *input, size_t len, const S *secret, size_t secretSize) noexcept
 
template<typename T , typename S , typename HashLong >
constexpr uint64_t constexpr_xxh3::XXH3_64bits_internal (const T *input, size_t len, uint64_t seed, const S *secret, size_t secretLen, HashLong f_hashLong) noexcept
 
template<BytesType Bytes>
constexpr size_t constexpr_xxh3::bytes_size (const Bytes &bytes) noexcept
 
template<ByteType T, size_t N>
constexpr size_t constexpr_xxh3::bytes_size (T(&)[N]) noexcept
 
template<ByteType T>
consteval uint64_t constexpr_xxh3::XXH3_64bits_const (const T *input, size_t len) noexcept
 Basic interfaces.
 
template<ByteType T, ByteType S>
consteval uint64_t constexpr_xxh3::XXH3_64bits_withSecret_const (const T *input, size_t len, const S *secret, size_t secretSize) noexcept
 
template<ByteType T>
consteval uint64_t constexpr_xxh3::XXH3_64bits_withSeed_const (const T *input, size_t len, uint64_t seed) noexcept
 
template<BytesType Bytes>
consteval uint64_t constexpr_xxh3::XXH3_64bits_const (const Bytes &input) noexcept
 Convenient interfaces.
 
template<BytesType Bytes, BytesType Secret>
consteval uint64_t constexpr_xxh3::XXH3_64bits_withSecret_const (const Bytes &input, const Secret &secret) noexcept
 
template<BytesType Bytes>
consteval uint64_t constexpr_xxh3::XXH3_64bits_withSeed_const (const Bytes &input, uint64_t seed) noexcept
 

Variables

constexpr uint32_t constexpr_xxh3::PRIME32_1 = 0x9E3779B1U
 
constexpr uint32_t constexpr_xxh3::PRIME32_2 = 0x85EBCA77U
 
constexpr uint32_t constexpr_xxh3::PRIME32_3 = 0xC2B2AE3DU
 
constexpr uint64_t constexpr_xxh3::PRIME64_1 = 0x9E3779B185EBCA87ULL
 
constexpr uint64_t constexpr_xxh3::PRIME64_2 = 0xC2B2AE3D27D4EB4FULL
 
constexpr uint64_t constexpr_xxh3::PRIME64_3 = 0x165667B19E3779F9ULL
 
constexpr uint64_t constexpr_xxh3::PRIME64_4 = 0x85EBCA77C2B2AE63ULL
 
constexpr uint64_t constexpr_xxh3::PRIME64_5 = 0x27D4EB2F165667C5ULL
 
constexpr size_t constexpr_xxh3::SECRET_DEFAULT_SIZE = 192
 
constexpr size_t constexpr_xxh3::SECRET_SIZE_MIN = 136
 
constexpr uint8_t constexpr_xxh3::kSecret [SECRET_DEFAULT_SIZE]
 
constexpr size_t constexpr_xxh3::STRIPE_LEN = 64
 
constexpr size_t constexpr_xxh3::SECRET_CONSUME_RATE = 8
 
constexpr size_t constexpr_xxh3::ACC_NB = STRIPE_LEN / sizeof(uint64_t)
 

Detailed Description

Copyright
BSD 2-Clause License
constexpr-xxh3 - C++20 constexpr implementation of the XXH3 64-bit variant of xxHash Copyright (c) 2021-2023, chys admin.nosp@m.@chy.nosp@m.s.inf.nosp@m.o <chys87@github> All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
This file uses code from Yann Collet's xxHash implementation. Original xxHash copyright notice:
xxHash - Extremely Fast Hash algorithm Header File Copyright (C) 2012-2020 Yann Collet
Author
Chys admin.nosp@m.@chy.nosp@m.s.inf.nosp@m.o <chys87@github>; Yann Collet
Date
2025

Definition in file ConstexprXXH3.h.