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Fix 64 bit hash_mix multiplier

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This commit is contained in:
Peter Dimov
2022-09-17 02:34:14 +03:00
parent e391cf6841
commit b148e34818
1 changed files with 2 additions and 2 deletions
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4
include/boost/container_hash/detail/hash_mix.hpp
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@@ -52,7 +52,7 @@ template<std::size_t Bits> struct hash_mix_impl;
// x *= 0xe9846af9b1a615d;
// x ^= x >> 32;
// x *= 0xe9846af9b1a615d;
// x ^= x >> 28;
// x ^= x >> 28;
//
// An equally good alternative is Pelle Evensen's Moremur:
//
@@ -68,7 +68,7 @@ template<> struct hash_mix_impl<64>
{
inline static boost::uint64_t fn( boost::uint64_t x )
{
boost::uint64_t const m = (boost::uint64_t(0xe9846af9) << 32) + 0xb1a615d;
boost::uint64_t const m = (boost::uint64_t(0xe9846af) << 32) + 0x9b1a615d;
x ^= x >> 32;
x *= m;