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Add a simple 64 bit to 64 bit hash (from MurmurHash3)

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Jonathan G Rennison
2024-01-18 01:11:10 +00:00
parent dcb054d152
commit 888b7b5dce
1 changed files with 15 additions and 0 deletions
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15
src/core/hash_func.hpp
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@@ -25,4 +25,19 @@ inline uint32_t SimpleHash32(uint32_t h)
return h; return h;
} }
/**
* Simple 64 bit to 64 bit hash
* From MurmurHash3
*/
inline uint64_t SimpleHash64(uint64_t h)
{
h ^= h >> 33;
h *= 0xff51afd7ed558ccdULL;
h ^= h >> 33;
h *= 0xc4ceb9fe1a85ec53ULL;
h ^= h >> 33;
return h;
}
#endif /* HASH_FUNC_HPP */ #endif /* HASH_FUNC_HPP */