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58 lines
1.3 KiB
C++
58 lines
1.3 KiB
C++
// Copyright 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 <cstdint>
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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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using namespace boost::hash2;
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template<class T> BOOST_CXX14_CONSTEXPR std::uint32_t test()
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{
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T v[ 95 ] = {};
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fnv1a_32 h;
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hash_append( h, {}, 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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std::uint32_t const r1 = 409807047;
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std::uint32_t const r2 = 4291711997;
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std::uint32_t const r4 = 3226601845;
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TEST_EQ( test<char>(), r1 );
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TEST_EQ( test<char16_t>(), r2 );
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TEST_EQ( test<char32_t>(), r4 );
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TEST_EQ( test<wchar_t>(), (sizeof(wchar_t) == sizeof(std::uint16_t)? r2: r4) );
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#if defined(__cpp_char8_t) && __cpp_char8_t >= 201811L
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TEST_EQ( test<char8_t>(), r1 );
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#endif
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return boost::report_errors();
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}
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