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- ///////////////////////////////////////////////////////////////
- // Copyright 2012 John Maddock. Distributed under 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
- //
- // Compare arithmetic results using fixed_int to GMP results.
- //
- #ifdef _MSC_VER
- #define _SCL_SECURE_NO_WARNINGS
- #endif
- #include <boost/multiprecision/cpp_int.hpp>
- #include <boost/multiprecision/logged_adaptor.hpp>
- #include <boost/multiprecision/debug_adaptor.hpp>
- #include <boost/random/mersenne_twister.hpp>
- #include <boost/random/uniform_int.hpp>
- #include <boost/timer.hpp>
- #include "test.hpp"
- #include <iostream>
- #include <iomanip>
- #include <sstream>
- #include <boost/archive/text_iarchive.hpp>
- #include <boost/archive/text_oarchive.hpp>
- #include <boost/archive/binary_iarchive.hpp>
- #include <boost/archive/binary_oarchive.hpp>
- #include <boost/archive/xml_iarchive.hpp>
- #include <boost/archive/xml_oarchive.hpp>
- #include <boost/exception/all.hpp>
- template <class T>
- T generate_random(unsigned bits_wanted)
- {
- static boost::random::mt19937 gen;
- typedef boost::random::mt19937::result_type random_type;
- T max_val;
- unsigned digits;
- if (std::numeric_limits<T>::is_bounded && (bits_wanted == (unsigned)std::numeric_limits<T>::digits))
- {
- max_val = (std::numeric_limits<T>::max)();
- digits = std::numeric_limits<T>::digits;
- }
- else
- {
- max_val = T(1) << bits_wanted;
- digits = bits_wanted;
- }
- unsigned bits_per_r_val = std::numeric_limits<random_type>::digits - 1;
- while ((random_type(1) << bits_per_r_val) > (gen.max)())
- --bits_per_r_val;
- unsigned terms_needed = digits / bits_per_r_val + 1;
- T val = 0;
- for (unsigned i = 0; i < terms_needed; ++i)
- {
- val *= (gen.max)();
- val += gen();
- }
- val %= max_val;
- return val;
- }
- template <class T>
- void test_neg(const T& x, const boost::mpl::true_&)
- {
- T val = -x;
- #ifndef BOOST_NO_EXCEPTIONS
- try
- {
- #endif
- T val2;
- {
- std::stringstream ss;
- boost::archive::text_oarchive oa(ss);
- oa << static_cast<const T&>(val);
- boost::archive::text_iarchive ia(ss);
- ia >> val2;
- BOOST_CHECK_EQUAL(val, val2);
- }
- {
- std::stringstream ss;
- {
- boost::archive::xml_oarchive oa(ss);
- oa << boost::serialization::make_nvp("value", static_cast<const T&>(val));
- }
- boost::archive::xml_iarchive ia(ss);
- ia >> boost::serialization::make_nvp("value", val2);
- BOOST_CHECK_EQUAL(val, val2);
- }
- {
- std::stringstream ss;
- boost::archive::binary_oarchive ob(ss);
- ob << static_cast<const T&>(val);
- boost::archive::binary_iarchive ib(ss);
- ib >> val2;
- BOOST_CHECK_EQUAL(val, val2);
- }
- #ifndef BOOST_NO_EXCEPTIONS
- }
- catch (const boost::exception& e)
- {
- std::cout << "Caught boost::exception with:\n";
- std::cout << diagnostic_information(e);
- }
- catch (const std::exception& e)
- {
- std::cout << "Caught std::exception with:\n";
- std::cout << e.what() << std::endl;
- }
- #endif
- }
- template <class T>
- void test_neg(const T&, const boost::mpl::false_&) {}
- template <class T>
- void test()
- {
- using namespace boost::multiprecision;
- boost::random::mt19937 gen;
- boost::uniform_int<> d(3, std::numeric_limits<T>::is_bounded ? std::numeric_limits<T>::digits : 3000);
- boost::timer tim;
- while (true)
- {
- T val = generate_random<T>(d(gen));
- #ifndef BOOST_NO_EXCEPTIONS
- try
- {
- #endif
- T val2;
- {
- std::stringstream ss;
- boost::archive::text_oarchive oa(ss);
- oa << static_cast<const T&>(val);
- boost::archive::text_iarchive ia(ss);
- ia >> val2;
- BOOST_CHECK_EQUAL(val, val2);
- }
- {
- std::stringstream ss;
- {
- boost::archive::xml_oarchive oa(ss);
- oa << boost::serialization::make_nvp("value", static_cast<const T&>(val));
- }
- boost::archive::xml_iarchive ia(ss);
- ia >> boost::serialization::make_nvp("value", val2);
- BOOST_CHECK_EQUAL(val, val2);
- }
- {
- std::stringstream ss;
- boost::archive::binary_oarchive ob(ss);
- ob << static_cast<const T&>(val);
- boost::archive::binary_iarchive ib(ss);
- ib >> val2;
- BOOST_CHECK_EQUAL(val, val2);
- }
- #ifndef BOOST_NO_EXCEPTIONS
- }
- catch (const boost::exception& e)
- {
- std::cout << "Caught boost::exception with:\n";
- std::cout << diagnostic_information(e);
- }
- catch (const std::exception& e)
- {
- std::cout << "Caught std::exception with:\n";
- std::cout << e.what() << std::endl;
- }
- #endif
- test_neg(val, boost::mpl::bool_<std::numeric_limits<T>::is_signed>());
- //
- // Check to see if test is taking too long.
- // Tests run on the compiler farm time out after 300 seconds,
- // so don't get too close to that:
- //
- #ifndef CI_SUPPRESS_KNOWN_ISSUES
- if (tim.elapsed() > 30)
- #else
- if (tim.elapsed() > 10)
- #endif
- {
- std::cout << "Timeout reached, aborting tests now....\n";
- break;
- }
- }
- }
- int main()
- {
- using namespace boost::multiprecision;
- test<number<logged_adaptor<cpp_int_backend<> > > >();
- test<number<debug_adaptor<cpp_int_backend<> > > >();
- return boost::report_errors();
- }
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