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/*
* (C) Copyright Nick Thompson 2018.
* Use, modification and distribution are subject to the
* Boost Software License, Version 1.0. (See accompanying file
* LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
*/
#include "multiprecision_config.hpp"
#ifndef DISABLE_MP_TESTS
#include <boost/integer/extended_euclidean.hpp>
#include <boost/cstdint.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/multiprecision/cpp_int.hpp>
#include <boost/integer/common_factor.hpp>
using boost::multiprecision::int128_t;
using boost::multiprecision::int256_t;
using boost::integer::extended_euclidean;
using boost::integer::gcd;
template<class Z>
void test_extended_euclidean()
{
// Stress test:
//Z max_arg = std::numeric_limits<Z>::max();
Z max_arg = 500;
for (Z m = max_arg; m > 0; --m)
{
for (Z n = max_arg; n > 0; --n)
{
boost::integer::euclidean_result_t<Z> u = extended_euclidean(m, n);
int256_t gcdmn = gcd(m, n);
int256_t x = u.x;
int256_t y = u.y;
BOOST_TEST_EQ(u.gcd, gcdmn);
BOOST_TEST_EQ(m*x + n*y, gcdmn);
}
}
}
int main()
{
test_extended_euclidean<boost::int16_t>();
test_extended_euclidean<boost::int32_t>();
test_extended_euclidean<boost::int64_t>();
test_extended_euclidean<int128_t>();
return boost::report_errors();;
}
#else
int main()
{
return 0;
}
#endif
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