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///////////////////////////////////////////////////////////////
// Copyright Christopher Kormanyos 2002 - 2011.
// Copyright 2011 John Maddock. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
//
// This work is based on an earlier work:
// "Algorithm 910: A Portable C++ Multiple-Precision System for Special-Function Calculations",
// in ACM TOMS, {VOL 37, ISSUE 4, (February 2011)} (C) ACM, 2011. http://doi.acm.org/10.1145/1916461.1916469
#ifdef _MSC_VER
#define _SCL_SECURE_NO_WARNINGS
#endif
#include <boost/detail/lightweight_test.hpp>
#include <array>
#include "test.hpp"
#include <boost/multiprecision/gmp.hpp>
int main()
{
using namespace boost::multiprecision;
//
// Test interconversions between GMP supported backends:
//
mpf_t mpf;
mpz_t mpz;
mpq_t mpq;
mpf_init2(mpf, 100);
mpf_set_ui(mpf, 2u);
mpz_init(mpz);
mpz_set_ui(mpz, 2u);
mpq_init(mpq);
mpq_set_ui(mpq, 2u, 1u);
BOOST_TEST(mpf_float(mpf) == 2);
BOOST_TEST(mpf_float_50(mpf) == 2);
BOOST_TEST(mpf_float(mpz) == 2);
BOOST_TEST(mpf_float_50(mpz) == 2);
BOOST_TEST(mpf_float(mpq) == 2);
BOOST_TEST(mpf_float_50(mpq) == 2);
mpf_float f0;
mpf_float_50 f50;
f0 = mpf;
BOOST_TEST(f0 == 2);
f0 = 0;
f0 = mpz;
BOOST_TEST(f0 == 2);
f0 = 0;
f0 = mpq;
BOOST_TEST(f0 == 2);
f50 = mpf;
BOOST_TEST(f50 == 2);
f50 = 0;
f50 = mpz;
BOOST_TEST(f50 == 2);
f50 = 0;
f50 = mpq;
BOOST_TEST(f50 == 2);
f50 = 4;
f0 = f50;
BOOST_TEST(f0 == 4);
f0 = 3;
f50 = f0;
BOOST_TEST(f50 == 3);
f50 = 4;
BOOST_TEST(mpf_float(f50) == 4);
BOOST_TEST(mpf_float_50(f0) == 3);
mpz_int iz(2);
mpq_rational rat(2);
f50 = iz;
BOOST_TEST(f50 == 2);
f0 = iz;
BOOST_TEST(f0 == 2);
BOOST_TEST(mpf_float(iz) == 2);
BOOST_TEST(mpf_float_50(iz) == 2);
BOOST_TEST(mpf_float(rat) == 2);
BOOST_TEST(mpf_float_50(rat) == 2);
BOOST_TEST(mpz_int(mpf) == 2);
BOOST_TEST(mpz_int(mpz) == 2);
BOOST_TEST(mpz_int(mpq) == 2);
iz = 3;
iz = mpz_int(mpf); // explicit conversion only
BOOST_TEST(iz == 2);
iz = 3;
iz = mpz;
BOOST_TEST(iz == 2);
iz = 4;
iz = mpz_int(mpq); // explicit conversion only
BOOST_TEST(iz == 2);
f0 = 2;
f50 = 2;
BOOST_TEST(mpz_int(f0) == 2);
BOOST_TEST(mpz_int(f50) == 2);
rat = 2;
BOOST_TEST(mpz_int(rat) == 2);
iz = 3;
iz = static_cast<mpz_int>(f0);
BOOST_TEST(iz == 2);
iz = 3;
iz = static_cast<mpz_int>(f50);
BOOST_TEST(iz == 2);
iz = 3;
iz = static_cast<mpz_int>(rat);
BOOST_TEST(iz == 2);
BOOST_TEST(mpq_rational(mpz) == 2);
BOOST_TEST(mpq_rational(mpq) == 2);
BOOST_TEST(mpq_rational(iz) == 2);
rat = 3;
rat = mpz;
BOOST_TEST(rat == 2);
rat = 3;
rat = mpq;
BOOST_TEST(rat == 2);
rat = 3;
rat = iz;
BOOST_TEST(rat == 2);
iz = numerator(rat);
BOOST_TEST(iz == 2);
iz = denominator(rat);
BOOST_TEST(iz == 1);
//
// Conversion to floating point types
// see https://github.com/boostorg/multiprecision/issues/178
//
rat = 3;
rat /= 4;
BOOST_TEST(rat.convert_to<float>() == 0.75);
BOOST_TEST(rat.convert_to<double>() == 0.75);
BOOST_TEST(rat.convert_to<long double>() == 0.75);
#ifdef BOOST_HAS_FLOAT128
BOOST_TEST(rat.convert_to<__float128>() == 0.75);
#endif
//
// Conversions involving precision only,
// note that mpf_t precisions are only approximate:
//
mpf_float::default_precision(30);
f50 = 2;
mpf_float_100 f100(3);
mpf_float f0a(4);
mpf_float f0b(f100);
BOOST_TEST(f0a.precision() >= 30);
BOOST_TEST(f0b.precision() >= 100);
f0a = f100;
BOOST_TEST(f0a == 3);
BOOST_TEST(f0a.precision() >= 100);
f100 = f50;
BOOST_TEST(f100 == 2);
mpf_clear(mpf);
mpz_clear(mpz);
mpq_clear(mpq);
return boost::report_errors();
}
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