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51 lines
1.4 KiB
C++
51 lines
1.4 KiB
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/compute_float80.hpp>
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#include <boost/charconv/detail/bit_layouts.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <random>
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#include <limits>
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#include <cstdint>
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#include <cmath>
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// MSVC uses long double = double
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// Darwin sometimes uses double double instead of long double
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#if BOOST_CHARCONV_LDBL_BITS == 80 && !defined(__APPLE__) && !defined(_WIN32) && !defined(_WIN64)
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using boost::charconv::detail::compute_float80;
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inline void simple_test()
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{
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bool success;
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// Trivial verifcation
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BOOST_TEST_EQ(compute_float80(1, 1, false, success), 1e1L);
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BOOST_TEST_EQ(compute_float80(0, 1, true, success), -1e0L);
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BOOST_TEST_EQ(compute_float80(308, 1, false, success), 1e308L);
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// out of range
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BOOST_TEST_EQ(compute_float80(10000, 5, false, success), 0L);
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BOOST_TEST_EQ(compute_float80(-10000, 5, false, success), 0L);
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// Composite
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BOOST_TEST_EQ(compute_float80(10, 123456789, false, success), 123456789e10L);
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BOOST_TEST_EQ(compute_float80(10, 123456789, true, success), -123456789e10L);
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BOOST_TEST_EQ(compute_float80(100, UINT64_C(4444444444444444444), false, success), 4444444444444444444e100L);
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}
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int main(void)
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{
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simple_test();
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return boost::report_errors();
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}
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#else
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int main(void)
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{
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return 0;
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}
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#endif
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