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
10 #include <boost/multiprecision/cpp_int.hpp>
11 #include <boost/random/mersenne_twister.hpp>
12 #include <boost/random/uniform_int.hpp>
16 #include <boost/multiprecision/gmp.hpp>
19 #include <boost/multiprecision/mpfr.hpp>
22 #include <boost/multiprecision/mpfi.hpp>
25 #include <boost/multiprecision/tommath.hpp>
28 #include <boost/multiprecision/float128.hpp>
30 #include <boost/multiprecision/cpp_bin_float.hpp>
31 #include <boost/multiprecision/cpp_dec_float.hpp>
33 using namespace boost::multiprecision;
36 #pragma warning(disable : 4127)
43 static boost::random::mt19937 gen;
46 while (val != prev_val)
55 static boost::random::uniform_int_distribution<e_type> ui(-20, 20);
56 return ldexp(val, ui(gen));
59 template <class From, class To>
60 void test_convert_neg_int(From from, const boost::mpl::true_&)
64 To t4 = from.template convert_to<To>();
65 BOOST_CHECK_EQUAL(From(trunc(from)), From(t3));
66 BOOST_CHECK_EQUAL(From(trunc(from)), From(t4));
68 template <class From, class To>
69 void test_convert_neg_int(From const&, const boost::mpl::false_&)
73 template <class From, class To>
74 void test_convert_imp(boost::mpl::int_<number_kind_floating_point> const&, boost::mpl::int_<number_kind_integer> const&)
76 for (unsigned i = 0; i < 100; ++i)
78 From from = generate_random<From>();
80 To t2 = from.template convert_to<To>();
81 BOOST_CHECK_EQUAL(From(trunc(from)), From(t1));
82 BOOST_CHECK_EQUAL(From(trunc(from)), From(t2));
83 test_convert_neg_int<From, To>(from, boost::mpl::bool_ < std::numeric_limits<From>::is_signed && std::numeric_limits<To>::is_signed > ());
87 template <class From, class To>
88 void test_convert_neg_rat(From from, const boost::mpl::true_&)
92 To t4 = from.template convert_to<To>();
93 From tol = std::numeric_limits<From>::epsilon();
94 BOOST_CHECK_CLOSE_FRACTION(From(t3), from, tol);
95 BOOST_CHECK_CLOSE_FRACTION(From(t4), from, tol);
97 template <class From, class To>
98 void test_convert_rat_int(From const&, const boost::mpl::false_&)
102 template <class From, class To>
103 void test_convert_imp(boost::mpl::int_<number_kind_floating_point> const&, boost::mpl::int_<number_kind_rational> const&)
105 for (unsigned i = 0; i < 100; ++i)
107 From from = generate_random<From>();
109 To t2 = from.template convert_to<To>();
110 From tol = std::numeric_limits<From>::epsilon();
111 BOOST_CHECK_CLOSE_FRACTION(From(t1), from, tol);
112 BOOST_CHECK_CLOSE_FRACTION(From(t2), from, tol);
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());
157 test_convert<cpp_dec_float_50, cpp_int>();
158 test_convert<cpp_dec_float_50, int128_t>();
159 test_convert<cpp_dec_float_50, uint128_t>();
161 test_convert<cpp_dec_float_50, cpp_rational>();
163 test_convert<cpp_dec_float_50, cpp_bin_float_50>();
166 test_convert<cpp_dec_float_50, mpz_int>();
167 test_convert<cpp_dec_float_50, mpq_rational>();
168 test_convert<cpp_dec_float_50, mpf_float_50>();
170 #if defined(HAS_MPFR)
171 test_convert<cpp_dec_float_50, mpfr_float_50>();
173 #if defined(HAS_MPFI)
174 test_convert<cpp_dec_float_50, mpfi_float_50>();
177 test_convert<cpp_dec_float_50, tom_int>();
178 test_convert<cpp_dec_float_50, tom_rational>();
181 test_convert<cpp_dec_float_50, float128>();
183 return boost::report_errors();