59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
/*
|
|
* (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
|