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update xxh3_64:4-8

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This commit is contained in:
Yann Collet 2019-03-23 12:26:16 -07:00
parent d34d978edb
commit a4b7259c7d
1 changed files with 6 additions and 4 deletions
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10
xxh3.h
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@ -274,7 +274,7 @@ XXH3_mul128_fold64(U64 ll1, U64 ll2)
static XXH64_hash_t XXH3_avalanche(U64 h64)
{
h64 ^= h64 >> 29;
h64 ^= h64 >> 37;
h64 *= PRIME64_3;
h64 ^= h64 >> 32;
return h64;
@ -307,12 +307,14 @@ XXH_FORCE_INLINE XXH64_hash_t
XXH3_len_4to8_64b(const void* data, size_t len, const void* keyPtr, XXH64_hash_t seed)
{
assert(data != NULL);
assert(key != NULL);
assert(len >= 4 && len <= 8);
{ const U32* const key32 = (const U32*) keyPtr;
U32 const l1 = XXH_readLE32(data) ^ key32[0];
U32 const l1 = XXH_readLE32(data) + key32[0];
U32 const l2 = XXH_readLE32((const BYTE*)data + len - 4) ^ key32[1];
U64 const ll1 = l1 + ((U64)l2 << 32) + seed;
return XXH3_avalanche(len + (ll1 * PRIME64_1));
U64 const ll1 = (l1 ^ (l2>>3)) + ((U64)l2 << 32) + seed;
U64 const ll11 = len + (ll1 * PRIME64_1);
return XXH3_avalanche(ll11);
}
}