boost/hash2
2
0
Fork 0
mirror of https://github.com/boostorg/hash2.git synced 2026-01-19 04:12:12 +00:00
Code Issues Projects Releases Wiki Activity

Provide separate named xxh3_128 constructors that match the reference implmentation

Browse Source
This commit is contained in:
Peter Dimov
2025-05-02 18:51:27 +03:00
parent 3dda04e461
commit 51588db04d
3 changed files with 38 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
include/boost/hash2/xxh3.hpp
View File

@@ -535,11 +535,7 @@ public:
seed_ = seed;
}
// XXH3-specific constructor (XXH3_withSecretAndSeed), not part of the concept requirements
xxh3_128( std::uint64_t seed, void const* p, std::size_t n ): xxh3_128( seed, static_cast<unsigned char const*>( p ), n )
{
}
private: // supporting constructor for the static factory functions
BOOST_CXX14_CONSTEXPR xxh3_128( std::uint64_t seed, unsigned char const* p, std::size_t n ): seed_( seed )
{
@@ -604,6 +600,40 @@ public:
}
}
public:
// XXH3-specific named constructors, matching the reference implementation
// for completeness only
static BOOST_CXX14_CONSTEXPR xxh3_128 withSeed( std::uint64_t seed )
{
return xxh3_128( seed );
}
static xxh3_128 BOOST_CXX14_CONSTEXPR withSecret( unsigned char const* p, std::size_t n )
{
return xxh3_128( 0, p, n );
}
static xxh3_128 withSecret( void const* p, std::size_t n )
{
return withSecret( static_cast<unsigned char const*>( p ), n );
}
static xxh3_128 BOOST_CXX14_CONSTEXPR withSecretAndSeed( unsigned char const* p, std::size_t n, std::uint64_t seed )
{
xxh3_128 r( seed, p, n );
r.with_secret_ = false;
return r;
}
static xxh3_128 withSecretAndSeed( void const* p, std::size_t n, std::uint64_t seed )
{
return withSecretAndSeed( static_cast<unsigned char const*>( p ), n, seed );
}
void update( void const* p, std::size_t n )
{
update( static_cast<unsigned char const*>( p ), n );

4
test/xxh3.cpp
View File

@@ -50,12 +50,12 @@ template<class H, class S> typename H::result_type hash( std::vector<unsigned ch
template<class H> typename H::result_type hash( std::vector<unsigned char> const& s, std::size_t n, unsigned char const* secret, std::size_t secret_len )
{
H h( 0, secret, secret_len );
H h = H::withSecret( secret, secret_len );
h.update( s.data(), n );
auto d = h.result();
H h2( 0, secret, secret_len );
H h2 = H::withSecret( secret, secret_len );
std::size_t m = n / 3;

2
test/xxh3_cx.cpp
View File

@@ -103,7 +103,7 @@ template<class H> BOOST_CXX14_CONSTEXPR typename H::result_type hash( std::size_
template<class H> BOOST_CXX14_CONSTEXPR typename H::result_type hash( std::size_t n, unsigned char const* secret, std::size_t secret_len )
{
H h( 0, secret, secret_len );
H h = H::withSecret( secret, secret_len );
std::size_t m = n / 3;