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Jay jwd-iv

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wuyakuma / hash_fnv1a.h

Created November 6, 2017 05:35 — forked from ruby0x1/hash_fnv1a.h

FNV1a c++11 constexpr compile time hash functions, 32 and 64 bit

	#pragma once
	#include <stdint.h>

	//fnv1a 32 and 64 bit hash functions
	// key is the data to hash, len is the size of the data (or how much of it to hash against)
	// code license: public domain or equivalent
	// post: https://notes.underscorediscovery.com/constexpr-fnv1a/

	inline const uint32_t hash_32_fnv1a(const void* key, const uint32_t len) {

ruby0x1 / hash_fnv1a.h

Last active May 30, 2025 19:22

FNV1a c++11 constexpr compile time hash functions, 32 and 64 bit

	#pragma once
	#include <stdint.h>

	//fnv1a 32 and 64 bit hash functions
	// key is the data to hash, len is the size of the data (or how much of it to hash against)
	// code license: public domain or equivalent
	// post: https://notes.underscorediscovery.com/constexpr-fnv1a/

	inline const uint32_t hash_32_fnv1a(const void* key, const uint32_t len) {

Lee-R / lithash.cpp

Created October 5, 2012 13:27

C++11 compile-time hash of literal strings.

	#include <cstdint>

	namespace detail
	{
	// FNV-1a 32bit hashing algorithm.
	constexpr std::uint32_t fnv1a_32(char const* s, std::size_t count)
	{
	return ((count ? fnv1a_32(s, count - 1) : 2166136261u) ^ s[count]) * 16777619u;
	}
	} // namespace detail