nfx-hashing 0.4.0
Modern C++20 header-only hashing library with hardware acceleration
Loading...
Searching...
No Matches
Hash.h
Go to the documentation of this file.
1/*
2 * MIT License
3 *
4 * Copyright (c) 2025 nfx
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24
31
32#pragma once
33
35#include "nfx/hashing/Hasher.h"
36
37namespace nfx::hashing
38{
39 //=====================================================================
40 // Unified hash<T, HashType> API
41 //=====================================================================
42
86 template <
87 typename T,
88 Hash32or64 HashType = uint32_t,
89 HashType Seed = ( sizeof( HashType ) == 4 ? constants::FNV_OFFSET_BASIS_32 : constants::FNV_OFFSET_BASIS_64 )>
90 [[nodiscard]] inline HashType hash( const T& value ) noexcept;
91} // namespace nfx::hashing
92
93#include "nfx/detail/hashing/Hash.inl"
STL-compatible hash functor for use with unordered containers.
HashType hash(const T &value) noexcept
Hash a value with explicit type and hash size specification.
constexpr uint32_t FNV_OFFSET_BASIS_32
FNV-1a 32-bit offset basis constant.
Definition Constants.h:47
constexpr uint64_t FNV_OFFSET_BASIS_64
FNV-1a 64-bit offset basis constant.
Definition Constants.h:53
C++20 concepts and type traits for nfx-hashing library.
Concept requiring type to be either uint32_t or uint64_t.
Definition Concepts.h:46