FEX-Emu/xxHash
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minor simplification

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This commit is contained in:
Yann Collet 2020-02-20 09:00:32 -08:00
parent de90226410
commit 6c3f96a9cc
1 changed files with 3 additions and 5 deletions
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8
xxh3.h
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@ -574,17 +574,15 @@ XXH3_len_4to8_64b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_h
XXH_ASSERT(input != NULL);
XXH_ASSERT(secret != NULL);
XXH_ASSERT(4 <= len && len < 8);
//seed = XXH_rotl64(seed, 13);
{ xxh_u32 const input1 = XXH_readLE32(input);
xxh_u32 const input2 = XXH_readLE32(input + len - 4);
xxh_u32 const key1 = input1 ^ ((xxh_u32)(seed >> 32) + XXH_readLE32(secret));
xxh_u32 const key2 = input2 ^ (XXH_readLE32(secret+4) - (xxh_u32)seed);
xxh_u64 const mix = XXH_mult32to64(key1, key2)
+ (XXH_swap64(input1) >> 12)
+ (XXH_swap64(input2) >> 13)
+ (XXH_swap64(input1) >> 0)
+ (XXH_swap64(input2) >> 1)
+ len;
//return XXH3_avalanche(mix);
return XXH3_avalanche(mix ^ (mix >> 47));
return XXH3_avalanche(mix ^ (mix >> 59));
}
}