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62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
/*
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* (C) Copyright Nick Thompson 2018.
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* Use, modification and distribution are subject to the
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* Boost Software License, Version 1.0. (See accompanying file
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* LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include <boost/config.hpp>
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#if (defined(BOOST_MSVC) && (BOOST_MSVC < 1500)) || \
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(defined(__clang_major__) && (__clang_major__ == 3) && (__clang_minor__ < 2)) || \
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(defined(BOOST_GCC) && defined(BOOST_GCC_CXX11) && BOOST_GCC < 40800)
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#define DISABLE_MP_TESTS
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#endif
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#ifndef DISABLE_MP_TESTS
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#include <boost/core/lightweight_test.hpp>
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#include <boost/multiprecision/cpp_int.hpp>
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#include <boost/integer/common_factor.hpp>
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#include <boost/integer/extended_euclidean.hpp>
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using boost::multiprecision::int128_t;
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using boost::multiprecision::int256_t;
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using boost::integer::extended_euclidean;
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using boost::integer::gcd;
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template<class Z>
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void test_extended_euclidean()
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{
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// Stress test:
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//Z max_arg = std::numeric_limits<Z>::max();
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Z max_arg = 500;
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for (Z m = max_arg; m > 0; --m)
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{
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for (Z n = max_arg; n > 0; --n)
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{
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boost::integer::euclidean_result_t<Z> u = extended_euclidean(m, n);
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int256_t gcdmn = gcd(m, n);
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int256_t x = u.x;
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int256_t y = u.y;
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BOOST_TEST_EQ(u.gcd, gcdmn);
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BOOST_TEST_EQ(m*x + n*y, gcdmn);
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}
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}
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}
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int main()
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{
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test_extended_euclidean<int16_t>();
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test_extended_euclidean<int32_t>();
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test_extended_euclidean<int64_t>();
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test_extended_euclidean<int128_t>();
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return boost::report_errors();;
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}
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#else
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int main()
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{
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return 0;
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}
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#endif
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