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58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
// Copyright 2017, 2024 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/hash2/hash_append.hpp>
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#include <boost/hash2/fnv1a.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <boost/config.hpp>
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#include <utility>
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#include <tuple>
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#if defined(BOOST_MSVC) && BOOST_MSVC < 1920
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# pragma warning(disable: 4307) // integral constant overflow
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#endif
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template<class Hash, class Flavor, class T>
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BOOST_CXX14_CONSTEXPR typename Hash::result_type test( T const& v )
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{
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Hash h;
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Flavor f{};
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hash_append( h, f, v );
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return h.result();
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}
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#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
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#if defined(BOOST_NO_CXX14_CONSTEXPR) || ( defined(BOOST_GCC) && BOOST_GCC < 60000 )
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# define TEST_EQ(x1, x2) BOOST_TEST_EQ(x1, x2)
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#else
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# define TEST_EQ(x1, x2) BOOST_TEST_EQ(x1, x2); STATIC_ASSERT(x1 == x2)
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#endif
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int main()
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{
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using namespace boost::hash2;
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TEST_EQ( (test<fnv1a_32, default_flavor>( std::make_pair( '\x01', '\x02' ) )), 3983810698 );
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TEST_EQ( (test<fnv1a_32, default_flavor>( std::make_tuple( '\x01', '\x02' ) )), 3983810698 );
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TEST_EQ( (test<fnv1a_32, little_endian_flavor>( std::make_pair( 1, 2 ) )), 3738734694 );
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TEST_EQ( (test<fnv1a_32, big_endian_flavor>( std::make_tuple( 1, 2 ) )), 1396319868 );
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#if defined(BOOST_HASH2_HAS_BUILTIN_BIT_CAST)
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TEST_EQ( (test<fnv1a_32, little_endian_flavor>( std::make_pair( 1.0, 2.0 ) )), 1170904120 );
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TEST_EQ( (test<fnv1a_32, big_endian_flavor>( std::make_tuple( 1.0, 2.0 ) )), 786481930 );
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#endif
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return boost::report_errors();
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}
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