1 ///////////////////////////////////////////////////////////////
2 // Copyright 2012 John Maddock. Distributed under the Boost
3 // Software License, Version 1.0. (See accompanying file
4 // LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
7 // Compare arithmetic results using fixed_int to GMP results.
11 #define _SCL_SECURE_NO_WARNINGS
14 #include <boost/multiprecision/cpp_int.hpp>
15 #include <boost/multiprecision/logged_adaptor.hpp>
16 #include <boost/multiprecision/debug_adaptor.hpp>
17 #include <boost/random/mersenne_twister.hpp>
18 #include <boost/random/uniform_int.hpp>
19 #include <boost/timer.hpp>
25 #include <boost/archive/text_iarchive.hpp>
26 #include <boost/archive/text_oarchive.hpp>
27 #include <boost/archive/binary_iarchive.hpp>
28 #include <boost/archive/binary_oarchive.hpp>
29 #include <boost/archive/xml_iarchive.hpp>
30 #include <boost/archive/xml_oarchive.hpp>
31 #include <boost/exception/all.hpp>
34 T generate_random(unsigned bits_wanted)
36 static boost::random::mt19937 gen;
37 typedef boost::random::mt19937::result_type random_type;
41 if (std::numeric_limits<T>::is_bounded && (bits_wanted == (unsigned)std::numeric_limits<T>::digits))
43 max_val = (std::numeric_limits<T>::max)();
44 digits = std::numeric_limits<T>::digits;
48 max_val = T(1) << bits_wanted;
52 unsigned bits_per_r_val = std::numeric_limits<random_type>::digits - 1;
53 while ((random_type(1) << bits_per_r_val) > (gen.max)())
56 unsigned terms_needed = digits / bits_per_r_val + 1;
59 for (unsigned i = 0; i < terms_needed; ++i)
69 void test_neg(const T& x, const boost::mpl::true_&)
72 #ifndef BOOST_NO_EXCEPTIONS
79 boost::archive::text_oarchive oa(ss);
80 oa << static_cast<const T&>(val);
81 boost::archive::text_iarchive ia(ss);
83 BOOST_CHECK_EQUAL(val, val2);
88 boost::archive::xml_oarchive oa(ss);
89 oa << boost::serialization::make_nvp("value", static_cast<const T&>(val));
91 boost::archive::xml_iarchive ia(ss);
92 ia >> boost::serialization::make_nvp("value", val2);
93 BOOST_CHECK_EQUAL(val, val2);
97 boost::archive::binary_oarchive ob(ss);
98 ob << static_cast<const T&>(val);
99 boost::archive::binary_iarchive ib(ss);
101 BOOST_CHECK_EQUAL(val, val2);
103 #ifndef BOOST_NO_EXCEPTIONS
105 catch (const boost::exception& e)
107 std::cout << "Caught boost::exception with:\n";
108 std::cout << diagnostic_information(e);
110 catch (const std::exception& e)
112 std::cout << "Caught std::exception with:\n";
113 std::cout << e.what() << std::endl;
118 void test_neg(const T&, const boost::mpl::false_&) {}
123 using namespace boost::multiprecision;
125 boost::random::mt19937 gen;
126 boost::uniform_int<> d(3, std::numeric_limits<T>::is_bounded ? std::numeric_limits<T>::digits : 3000);
131 T val = generate_random<T>(d(gen));
132 #ifndef BOOST_NO_EXCEPTIONS
138 std::stringstream ss;
139 boost::archive::text_oarchive oa(ss);
140 oa << static_cast<const T&>(val);
141 boost::archive::text_iarchive ia(ss);
143 BOOST_CHECK_EQUAL(val, val2);
146 std::stringstream ss;
148 boost::archive::xml_oarchive oa(ss);
149 oa << boost::serialization::make_nvp("value", static_cast<const T&>(val));
151 boost::archive::xml_iarchive ia(ss);
152 ia >> boost::serialization::make_nvp("value", val2);
153 BOOST_CHECK_EQUAL(val, val2);
156 std::stringstream ss;
157 boost::archive::binary_oarchive ob(ss);
158 ob << static_cast<const T&>(val);
159 boost::archive::binary_iarchive ib(ss);
161 BOOST_CHECK_EQUAL(val, val2);
163 #ifndef BOOST_NO_EXCEPTIONS
165 catch (const boost::exception& e)
167 std::cout << "Caught boost::exception with:\n";
168 std::cout << diagnostic_information(e);
170 catch (const std::exception& e)
172 std::cout << "Caught std::exception with:\n";
173 std::cout << e.what() << std::endl;
176 test_neg(val, boost::mpl::bool_<std::numeric_limits<T>::is_signed>());
178 // Check to see if test is taking too long.
179 // Tests run on the compiler farm time out after 300 seconds,
180 // so don't get too close to that:
182 #ifndef CI_SUPPRESS_KNOWN_ISSUES
183 if (tim.elapsed() > 30)
185 if (tim.elapsed() > 10)
188 std::cout << "Timeout reached, aborting tests now....\n";
196 using namespace boost::multiprecision;
197 test<number<logged_adaptor<cpp_int_backend<> > > >();
198 test<number<debug_adaptor<cpp_int_backend<> > > >();
199 return boost::report_errors();