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/random/mersenne_twister.hpp>
16 #include <boost/random/uniform_int.hpp>
17 #include <boost/timer.hpp>
23 #include <boost/archive/text_iarchive.hpp>
24 #include <boost/archive/text_oarchive.hpp>
25 #include <boost/archive/binary_iarchive.hpp>
26 #include <boost/archive/xml_iarchive.hpp>
27 #include <boost/archive/binary_oarchive.hpp>
28 #include <boost/archive/xml_oarchive.hpp>
29 #include <boost/exception/all.hpp>
32 T generate_random(unsigned bits_wanted)
34 static boost::random::mt19937 gen;
35 typedef boost::random::mt19937::result_type random_type;
39 if (std::numeric_limits<T>::is_bounded && (bits_wanted == (unsigned)std::numeric_limits<T>::digits))
41 max_val = (std::numeric_limits<T>::max)();
42 digits = std::numeric_limits<T>::digits;
46 max_val = T(1) << bits_wanted;
50 unsigned bits_per_r_val = std::numeric_limits<random_type>::digits - 1;
51 while ((random_type(1) << bits_per_r_val) > (gen.max)())
54 unsigned terms_needed = digits / bits_per_r_val + 1;
57 for (unsigned i = 0; i < terms_needed; ++i)
67 void test_neg(const T& x, const boost::mpl::true_&)
70 #ifndef BOOST_NO_EXCEPTIONS
75 boost::archive::text_oarchive oa(ss);
76 oa << static_cast<const T&>(val);
77 boost::archive::text_iarchive ia(ss);
80 BOOST_CHECK_EQUAL(val, val2);
83 boost::archive::binary_oarchive ob(ss);
84 ob << static_cast<const T&>(val);
85 boost::archive::binary_iarchive ib(ss);
87 BOOST_CHECK_EQUAL(val, val2);
88 #ifndef BOOST_NO_EXCEPTIONS
90 catch (const boost::exception& e)
92 std::cout << "Caught boost::exception with:\n";
93 std::cout << diagnostic_information(e);
95 catch (const std::exception& e)
97 std::cout << "Caught std::exception with:\n";
98 std::cout << e.what() << std::endl;
103 void test_neg(const T&, const boost::mpl::false_&) {}
108 using namespace boost::multiprecision;
110 boost::random::mt19937 gen;
111 boost::uniform_int<> d(3, std::numeric_limits<T>::is_bounded ? std::numeric_limits<T>::digits : 3000);
116 T val = generate_random<T>(d(gen));
117 #ifndef BOOST_NO_EXCEPTIONS
123 std::stringstream ss;
124 boost::archive::text_oarchive oa(ss);
125 oa << static_cast<const T&>(val);
126 boost::archive::text_iarchive ia(ss);
128 BOOST_CHECK_EQUAL(val, val2);
131 std::stringstream ss;
132 boost::archive::binary_oarchive ob(ss);
133 ob << static_cast<const T&>(val);
134 boost::archive::binary_iarchive ib(ss);
136 BOOST_CHECK_EQUAL(val, val2);
139 std::stringstream ss;
141 boost::archive::xml_oarchive oc(ss);
142 oc << boost::serialization::make_nvp("value", static_cast<const T&>(val));
144 boost::archive::xml_iarchive ic(ss);
145 ic >> boost::serialization::make_nvp("value", val2);
146 BOOST_CHECK_EQUAL(val, val2);
149 #ifndef BOOST_NO_EXCEPTIONS
151 catch (const boost::exception& e)
153 std::cout << "Caught boost::exception with:\n";
154 std::cout << diagnostic_information(e);
156 catch (const std::exception& e)
158 std::cout << "Caught std::exception with:\n";
159 std::cout << e.what() << std::endl;
162 test_neg(val, boost::mpl::bool_<std::numeric_limits<T>::is_signed>());
164 // Check to see if test is taking too long.
165 // Tests run on the compiler farm time out after 300 seconds,
166 // so don't get too close to that:
168 #ifndef CI_SUPPRESS_KNOWN_ISSUES
169 if (tim.elapsed() > 150)
171 if (tim.elapsed() > 25)
174 std::cout << "Timeout reached, aborting tests now....\n";
180 #if !defined(TEST1) && !defined(TEST2) && !defined(TEST3) && !defined(TEST4)
189 using namespace boost::multiprecision;
194 test<number<cpp_int_backend<61, 61, unsigned_magnitude, unchecked, void> > >();
197 test<number<cpp_int_backend<120, 120, signed_magnitude, unchecked, void> > >();
202 return boost::report_errors();