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 #define _SCL_SECURE_NO_WARNINGS
12 #include <boost/multiprecision/cpp_int.hpp>
13 #include <boost/random/mersenne_twister.hpp>
14 #include <boost/random/uniform_int.hpp>
18 #include <boost/multiprecision/gmp.hpp>
21 #include <boost/multiprecision/mpfr.hpp>
24 #include <boost/multiprecision/mpfi.hpp>
27 #include <boost/multiprecision/tommath.hpp>
30 #include <boost/multiprecision/float128.hpp>
32 #include <boost/multiprecision/cpp_bin_float.hpp>
33 #include <boost/multiprecision/cpp_dec_float.hpp>
35 using namespace boost::multiprecision;
38 #pragma warning(disable : 4127)
45 static boost::random::mt19937 gen;
48 while (val != prev_val)
57 static boost::random::uniform_int_distribution<e_type> ui(-20, 20);
58 return ldexp(val, ui(gen));
61 template <class From, class To>
62 void test_convert_neg_int(From from, const boost::mpl::true_&)
66 To t4 = from.template convert_to<To>();
67 BOOST_CHECK_EQUAL(From(trunc(from)), From(t3));
68 BOOST_CHECK_EQUAL(From(trunc(from)), From(t4));
70 template <class From, class To>
71 void test_convert_neg_int(From const&, const boost::mpl::false_&)
75 template <class From, class To>
76 void test_convert_imp(boost::mpl::int_<number_kind_floating_point> const&, boost::mpl::int_<number_kind_integer> const&)
78 for (unsigned i = 0; i < 100; ++i)
80 From from = generate_random<From>();
82 To t2 = from.template convert_to<To>();
83 BOOST_CHECK_EQUAL(From(trunc(from)), From(t1));
84 BOOST_CHECK_EQUAL(From(trunc(from)), From(t2));
85 test_convert_neg_int<From, To>(from, boost::mpl::bool_ < std::numeric_limits<From>::is_signed && std::numeric_limits<To>::is_signed > ());
89 template <class From, class To>
90 void test_convert_neg_rat(From from, const boost::mpl::true_&)
94 To t4 = from.template convert_to<To>();
95 BOOST_CHECK_EQUAL(From(t3), from);
96 BOOST_CHECK_EQUAL(From(t4), from);
98 template <class From, class To>
99 void test_convert_rat_int(From const&, const boost::mpl::false_&)
103 template <class From, class To>
104 void test_convert_imp(boost::mpl::int_<number_kind_floating_point> const&, boost::mpl::int_<number_kind_rational> const&)
106 for (unsigned i = 0; i < 100; ++i)
108 From from = generate_random<From>();
110 To t2 = from.template convert_to<To>();
111 BOOST_CHECK_EQUAL(From(t1), from);
112 BOOST_CHECK_EQUAL(From(t2), from);
113 test_convert_neg_rat<From, To>(from, boost::mpl::bool_ < std::numeric_limits<From>::is_signed && std::numeric_limits<To>::is_signed > ());
117 template <class From, class To>
118 void test_convert_neg_float(From from, const boost::mpl::true_&)
122 To t4 = from.template convert_to<To>();
123 To answer(from.str());
124 To tol = (std::max)(std::numeric_limits<To>::epsilon(), To(std::numeric_limits<From>::epsilon())) * 2;
125 BOOST_CHECK_CLOSE_FRACTION(t3, answer, tol);
126 BOOST_CHECK_CLOSE_FRACTION(t4, answer, tol);
128 template <class From, class To>
129 void test_convert_neg_float(From const&, const boost::mpl::false_&)
133 template <class From, class To>
134 void test_convert_imp(boost::mpl::int_<number_kind_floating_point> const&, boost::mpl::int_<number_kind_floating_point> const&)
136 for (unsigned i = 0; i < 100; ++i)
138 From from = generate_random<From>();
140 To t2 = from.template convert_to<To>();
141 To answer(from.str());
142 To tol = (std::max)(std::numeric_limits<To>::epsilon(), To(std::numeric_limits<From>::epsilon())) * 2;
143 BOOST_CHECK_CLOSE_FRACTION(t1, answer, tol);
144 BOOST_CHECK_CLOSE_FRACTION(t2, answer, tol);
145 test_convert_neg_float<From, To>(from, boost::mpl::bool_ < std::numeric_limits<From>::is_signed && std::numeric_limits<To>::is_signed > ());
149 template <class From, class To>
152 test_convert_imp<From, To>(typename number_category<From>::type(), typename number_category<To>::type());
158 // Some basic sanity checks first:
160 BOOST_CHECK_EQUAL(std::numeric_limits<float128>::epsilon(), float128("1.92592994438723585305597794258492732e-34"));
161 BOOST_CHECK_EQUAL((std::numeric_limits<float128>::min)(), float128("3.36210314311209350626267781732175260e-4932"));
162 BOOST_CHECK_EQUAL((std::numeric_limits<float128>::max)(), float128("1.18973149535723176508575932662800702e4932"));
163 BOOST_CHECK_EQUAL((std::numeric_limits<float128>::denorm_min)(), float128("6.475175119438025110924438958227646552e-4966"));
164 BOOST_CHECK((boost::math::isinf)((std::numeric_limits<float128>::infinity)()));
165 BOOST_CHECK((std::numeric_limits<float128>::infinity)() > 0);
166 BOOST_CHECK((boost::math::isnan)((std::numeric_limits<float128>::quiet_NaN)()));
168 test_convert<float128, cpp_int>();
169 test_convert<float128, int128_t>();
170 test_convert<float128, uint128_t>();
172 test_convert<float128, cpp_rational>();
174 test_convert<float128, cpp_dec_float_50>();
177 test_convert<float128, mpz_int>();
178 test_convert<float128, mpq_rational>();
179 test_convert<float128, mpf_float_50>();
181 #if defined(HAS_MPFR)
182 test_convert<float128, mpfr_float_50>();
184 #if defined(HAS_MPFI)
185 test_convert<float128, mpfi_float_50>();
188 test_convert<float128, tom_int>();
189 test_convert<float128, tom_rational>();
191 return boost::report_errors();
196 int main() { return 0; }