1 ///////////////////////////////////////////////////////////////
2 // Copyright Christopher Kormanyos 2002 - 2011.
3 // Copyright 2011 John Maddock. Distributed under the Boost
4 // Software License, Version 1.0. (See accompanying file
5 // LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
7 // This work is based on an earlier work:
8 // "Algorithm 910: A Portable C++ Multiple-Precision System for Special-Function Calculations",
9 // in ACM TOMS, {VOL 37, ISSUE 4, (February 2011)} (C) ACM, 2011. http://doi.acm.org/10.1145/1916461.1916469
12 #define _SCL_SECURE_NO_WARNINGS
15 #include <boost/detail/lightweight_test.hpp>
16 #include <boost/array.hpp>
19 #include <boost/multiprecision/gmp.hpp>
23 using namespace boost::multiprecision;
25 // Test interconversions between GMP supported backends:
35 mpq_set_ui(mpq, 2u, 1u);
37 BOOST_TEST(mpf_float(mpf) == 2);
38 BOOST_TEST(mpf_float_50(mpf) == 2);
39 BOOST_TEST(mpf_float(mpz) == 2);
40 BOOST_TEST(mpf_float_50(mpz) == 2);
41 BOOST_TEST(mpf_float(mpq) == 2);
42 BOOST_TEST(mpf_float_50(mpq) == 2);
71 BOOST_TEST(mpf_float(f50) == 4);
72 BOOST_TEST(mpf_float_50(f0) == 3);
80 BOOST_TEST(mpf_float(iz) == 2);
81 BOOST_TEST(mpf_float_50(iz) == 2);
82 BOOST_TEST(mpf_float(rat) == 2);
83 BOOST_TEST(mpf_float_50(rat) == 2);
85 BOOST_TEST(mpz_int(mpf) == 2);
86 BOOST_TEST(mpz_int(mpz) == 2);
87 BOOST_TEST(mpz_int(mpq) == 2);
89 iz = mpz_int(mpf); // explicit conversion only
95 iz = mpz_int(mpq); // explicit conversion only
100 BOOST_TEST(mpz_int(f0) == 2);
101 BOOST_TEST(mpz_int(f50) == 2);
103 BOOST_TEST(mpz_int(rat) == 2);
105 iz = static_cast<mpz_int>(f0);
108 iz = static_cast<mpz_int>(f50);
111 iz = static_cast<mpz_int>(rat);
114 BOOST_TEST(mpq_rational(mpz) == 2);
115 BOOST_TEST(mpq_rational(mpq) == 2);
116 BOOST_TEST(mpq_rational(iz) == 2);
119 BOOST_TEST(rat == 2);
122 BOOST_TEST(rat == 2);
125 BOOST_TEST(rat == 2);
129 iz = denominator(rat);
133 // Conversions involving precision only,
134 // note that mpf_t precisions are only approximate:
136 mpf_float::default_precision(30);
138 mpf_float_100 f100(3);
141 BOOST_TEST(f0a.precision() >= 30);
142 BOOST_TEST(f0b.precision() >= 100);
144 BOOST_TEST(f0a == 3);
145 BOOST_TEST(f0a.precision() >= 100);
148 BOOST_TEST(f100 == 2);
154 return boost::report_errors();