diff options
Diffstat (limited to 'src/test/fuzz/golomb_rice.cpp')
| -rw-r--r-- | src/test/fuzz/golomb_rice.cpp | 18 |
1 files changed, 2 insertions, 16 deletions
diff --git a/src/test/fuzz/golomb_rice.cpp b/src/test/fuzz/golomb_rice.cpp index 746347ac95..b4bb4c6dc6 100644 --- a/src/test/fuzz/golomb_rice.cpp +++ b/src/test/fuzz/golomb_rice.cpp @@ -1,4 +1,4 @@ -// Copyright (c) 2020 The Bitcoin Core developers +// Copyright (c) 2020-2021 The Bitcoin Core developers // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. @@ -19,27 +19,13 @@ #include <vector> namespace { -uint64_t MapIntoRange(const uint64_t x, const uint64_t n) -{ - const uint64_t x_hi = x >> 32; - const uint64_t x_lo = x & 0xFFFFFFFF; - const uint64_t n_hi = n >> 32; - const uint64_t n_lo = n & 0xFFFFFFFF; - const uint64_t ac = x_hi * n_hi; - const uint64_t ad = x_hi * n_lo; - const uint64_t bc = x_lo * n_hi; - const uint64_t bd = x_lo * n_lo; - const uint64_t mid34 = (bd >> 32) + (bc & 0xFFFFFFFF) + (ad & 0xFFFFFFFF); - const uint64_t upper64 = ac + (bc >> 32) + (ad >> 32) + (mid34 >> 32); - return upper64; -} uint64_t HashToRange(const std::vector<uint8_t>& element, const uint64_t f) { const uint64_t hash = CSipHasher(0x0706050403020100ULL, 0x0F0E0D0C0B0A0908ULL) .Write(element.data(), element.size()) .Finalize(); - return MapIntoRange(hash, f); + return FastRange64(hash, f); } std::vector<uint64_t> BuildHashedSet(const std::unordered_set<std::vector<uint8_t>, ByteVectorHash>& elements, const uint64_t f) |