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30 lines
922 B
C++
30 lines
922 B
C++
// Copyright 2023 Matt Borland
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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/charconv/detail/emulated128.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <limits>
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#include <cstdint>
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void test128()
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{
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auto r1 = boost::charconv::detail::umul128(1, 1);
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BOOST_TEST_EQ(r1.high, UINT64_C(0));
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BOOST_TEST_EQ(r1.low, UINT64_C(1));
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auto r2 = boost::charconv::detail::umul128(10, (std::numeric_limits<std::uint64_t>::max)());
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BOOST_TEST_EQ(r2.high, UINT64_C(9));
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BOOST_TEST_EQ(r2.low, UINT64_C(18446744073709551606));
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auto r3 = boost::charconv::detail::umul128((std::numeric_limits<std::uint64_t>::max)(), (std::numeric_limits<std::uint64_t>::max)());
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BOOST_TEST_EQ(r3.high, UINT64_C(18446744073709551614));
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BOOST_TEST_EQ(r3.low, UINT64_C(1));
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}
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int main()
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{
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test128();
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return boost::report_errors();
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}
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