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57 lines
1.3 KiB
C++
57 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/config.hpp>
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#include <boost/config/pragma_message.hpp>
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#if defined(BOOST_NO_CXX14_CONSTEXPR)
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BOOST_PRAGMA_MESSAGE( "Test skipped, because BOOST_NO_CXX14_CONSTEXPR is defined" )
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int main() {}
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#else
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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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#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
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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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enum E: unsigned char {};
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int main()
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{
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constexpr std::uint32_t r = 409807047;
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STATIC_ASSERT( test<bool>() == r );
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STATIC_ASSERT( test<char>() == r );
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STATIC_ASSERT( test<signed char>() == r );
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STATIC_ASSERT( test<unsigned char>() == r );
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STATIC_ASSERT( test<E>() == r );
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#if defined(__cpp_lib_byte) && __cpp_lib_byte >= 201603L
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STATIC_ASSERT( test<std::byte>() == r );
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#endif
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#if defined(__cpp_char8_t) && __cpp_char8_t >= 201811L
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STATIC_ASSERT( test<char8_t>() == r );
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#endif
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}
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#endif
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