mirror of
https://github.com/boostorg/hash2.git
synced 2026-01-19 04:12:12 +00:00
93 lines
3.6 KiB
C++
93 lines
3.6 KiB
C++
// Copyright 2024 Peter Dimov
|
|
// Distributed under the Boost Software License, Version 1.0.
|
|
// https://www.boost.org/LICENSE_1_0.txt
|
|
|
|
#include <boost/hash2/hash_append.hpp>
|
|
#include <boost/hash2/fnv1a.hpp>
|
|
#include <boost/core/lightweight_test.hpp>
|
|
#include <limits>
|
|
#include <cstdint>
|
|
|
|
template<class Hash, class Flavor, class T> void test( T const& v, unsigned char const (&ref)[ sizeof(T) ] )
|
|
{
|
|
{
|
|
typename Hash::result_type r1, r2;
|
|
|
|
{
|
|
Hash h;
|
|
Flavor f;
|
|
|
|
hash_append( h, f, v );
|
|
|
|
r1 = h.result();
|
|
}
|
|
|
|
{
|
|
Hash h;
|
|
|
|
h.update( ref, sizeof(ref) );
|
|
|
|
r2 = h.result();
|
|
}
|
|
|
|
BOOST_TEST_EQ( r1, r2 );
|
|
}
|
|
}
|
|
|
|
int main()
|
|
{
|
|
using namespace boost::hash2;
|
|
|
|
// float
|
|
|
|
test<fnv1a_32, default_flavor>( +0.0f, { 0x00, 0x00, 0x00, 0x00 } );
|
|
test<fnv1a_32, default_flavor>( -0.0f, { 0x00, 0x00, 0x00, 0x00 } );
|
|
|
|
test<fnv1a_32, big_endian_flavor>( +1.0f, { 0x3F, 0x80, 0x00, 0x00 } );
|
|
test<fnv1a_32, big_endian_flavor>( -1.0f, { 0xBF, 0x80, 0x00, 0x00 } );
|
|
|
|
test<fnv1a_32, big_endian_flavor>( +3.14f, { 0x40, 0x48, 0xF5, 0xC3 } );
|
|
test<fnv1a_32, big_endian_flavor>( -3.14f, { 0xC0, 0x48, 0xF5, 0xC3 } );
|
|
|
|
test<fnv1a_32, big_endian_flavor>( +std::numeric_limits<float>::infinity(), { 0x7F, 0x80, 0x00, 0x00 } );
|
|
test<fnv1a_32, big_endian_flavor>( -std::numeric_limits<float>::infinity(), { 0xFF, 0x80, 0x00, 0x00 } );
|
|
|
|
test<fnv1a_32, little_endian_flavor>( +1.0f, { 0x00, 0x00, 0x80, 0x3F } );
|
|
test<fnv1a_32, little_endian_flavor>( -1.0f, { 0x00, 0x00, 0x80, 0xBF } );
|
|
|
|
test<fnv1a_32, little_endian_flavor>( +3.14f, { 0xC3, 0xF5, 0x48, 0x40 } );
|
|
test<fnv1a_32, little_endian_flavor>( -3.14f, { 0xC3, 0xF5, 0x48, 0xC0 } );
|
|
|
|
test<fnv1a_32, little_endian_flavor>( +std::numeric_limits<float>::infinity(), { 0x00, 0x00, 0x80, 0x7F } );
|
|
test<fnv1a_32, little_endian_flavor>( -std::numeric_limits<float>::infinity(), { 0x00, 0x00, 0x80, 0xFF } );
|
|
|
|
// double
|
|
|
|
test<fnv1a_32, default_flavor>( +0.0, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } );
|
|
test<fnv1a_32, default_flavor>( -0.0, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } );
|
|
|
|
test<fnv1a_32, big_endian_flavor>( +1.0, { 0x3F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } );
|
|
test<fnv1a_32, big_endian_flavor>( -1.0, { 0xBF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } );
|
|
|
|
test<fnv1a_32, big_endian_flavor>( +3.14, { 0x40, 0x09, 0x1E, 0xB8, 0x51, 0xEB, 0x85, 0x1F } );
|
|
test<fnv1a_32, big_endian_flavor>( -3.14, { 0xC0, 0x09, 0x1E, 0xB8, 0x51, 0xEB, 0x85, 0x1F } );
|
|
|
|
test<fnv1a_32, big_endian_flavor>( +std::numeric_limits<double>::infinity(), { 0x7F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } );
|
|
test<fnv1a_32, big_endian_flavor>( -std::numeric_limits<double>::infinity(), { 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } );
|
|
|
|
test<fnv1a_32, little_endian_flavor>( +1.0, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0x3F } );
|
|
test<fnv1a_32, little_endian_flavor>( -1.0, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0xBF } );
|
|
|
|
test<fnv1a_32, little_endian_flavor>( +3.14, { 0x1F, 0x85, 0xEB, 0x51, 0xB8, 0x1E, 0x09, 0x40 } );
|
|
test<fnv1a_32, little_endian_flavor>( -3.14, { 0x1F, 0x85, 0xEB, 0x51, 0xB8, 0x1E, 0x09, 0xC0 } );
|
|
|
|
test<fnv1a_32, little_endian_flavor>( +std::numeric_limits<double>::infinity(), { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0x7F } );
|
|
test<fnv1a_32, little_endian_flavor>( -std::numeric_limits<double>::infinity(), { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0xFF } );
|
|
|
|
// long double
|
|
|
|
/* ... */
|
|
|
|
return boost::report_errors();
|
|
}
|