FEX-Emu/xxHash
1
0
Fork 0
mirror of https://github.com/FEX-Emu/xxHash.git synced 2024-11-28 01:00:56 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

refactored xxh3_64:4-8

Browse Source 
purely bijective for each len
This commit is contained in:
Yann Collet 2019-03-22 19:20:32 -07:00
parent 82bac5e4e4
commit d34d978edb
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
xxh3.h
View File

@ -309,10 +309,10 @@ XXH3_len_4to8_64b(const void* data, size_t len, const void* keyPtr, XXH64_hash_t
assert(data != NULL);
assert(len >= 4 && len <= 8);
{ const U32* const key32 = (const U32*) keyPtr;
U32 const l1 = XXH_readLE32(data) + (U32)seed + key32[0];
U32 const l2 = XXH_readLE32((const BYTE*)data + len - 4) + (U32)(seed >> 32) + key32[1];
U64 const acc = len + l1 + ((U64)l2 << 32) + XXH_mult32to64(l1, l2);
return XXH3_avalanche(acc);
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));
}
}