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///////////////////////////////////////////////////////////////
// Copyright 2012 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
#ifdef _MSC_VER
#define _SCL_SECURE_NO_WARNINGS
#endif
#if defined(HAS_GMP)
#include <boost/multiprecision/cpp_int.hpp>
#include <boost/random/mersenne_twister.hpp>
#include <boost/random/uniform_int.hpp>
#include "test.hpp"
#if defined(HAS_GMP)
#include <boost/multiprecision/gmp.hpp>
#endif
#if defined(HAS_MPFR)
#include <boost/multiprecision/mpfr.hpp>
#endif
#if defined(HAS_MPFI)
#include <boost/multiprecision/mpfi.hpp>
#endif
#ifdef HAS_TOMMATH
#include <boost/multiprecision/tommath.hpp>
#endif
#ifdef HAS_FLOAT128
#include <boost/multiprecision/float128.hpp>
#endif
#include <boost/multiprecision/cpp_bin_float.hpp>
#include <boost/multiprecision/cpp_dec_float.hpp>
using namespace boost::multiprecision;
#ifdef BOOST_MSVC
#pragma warning(disable : 4127)
#endif
template <class T>
T generate_random()
{
typedef int e_type;
static boost::random::mt19937 gen;
T val = gen();
T prev_val = -1;
while (val != prev_val)
{
val *= (gen.max)();
prev_val = val;
val += gen();
}
e_type e;
val = frexp(val, &e);
static boost::random::uniform_int_distribution<e_type> ui(-20, 20);
return ldexp(val, ui(gen));
}
template <class From, class To>
void test_convert_neg_int(From from, const boost::mpl::true_&)
{
from = -from;
To t3(from);
To t4 = from.template convert_to<To>();
BOOST_CHECK_EQUAL(From(trunc(from)), From(t3));
BOOST_CHECK_EQUAL(From(trunc(from)), From(t4));
}
template <class From, class To>
void test_convert_neg_int(From const&, const boost::mpl::false_&)
{
}
template <class From, class To>
void test_convert_imp(boost::mpl::int_<number_kind_floating_point> const&, boost::mpl::int_<number_kind_integer> const&)
{
for (unsigned i = 0; i < 100; ++i)
{
From from = generate_random<From>();
To t1(from);
To t2 = from.template convert_to<To>();
BOOST_CHECK_EQUAL(From(trunc(from)), From(t1));
BOOST_CHECK_EQUAL(From(trunc(from)), From(t2));
test_convert_neg_int<From, To>(from, boost::mpl::bool_ < std::numeric_limits<From>::is_signed && std::numeric_limits<To>::is_signed > ());
}
}
template <class From, class To>
void test_convert_neg_rat(From from, const boost::mpl::true_&)
{
from = -from;
To t3(from);
To t4 = from.template convert_to<To>();
From tol = std::numeric_limits<From>::epsilon();
BOOST_CHECK_CLOSE_FRACTION(From(t3), from, tol);
BOOST_CHECK_CLOSE_FRACTION(From(t4), from, tol);
}
template <class From, class To>
void test_convert_rat_int(From const&, const boost::mpl::false_&)
{
}
template <class From, class To>
void test_convert_imp(boost::mpl::int_<number_kind_floating_point> const&, boost::mpl::int_<number_kind_rational> const&)
{
for (unsigned i = 0; i < 100; ++i)
{
From from = generate_random<From>();
To t1(from);
To t2 = from.template convert_to<To>();
From tol = std::numeric_limits<From>::epsilon();
BOOST_CHECK_CLOSE_FRACTION(From(t1), from, tol);
BOOST_CHECK_CLOSE_FRACTION(From(t2), from, tol);
test_convert_neg_rat<From, To>(from, boost::mpl::bool_ < std::numeric_limits<From>::is_signed && std::numeric_limits<To>::is_signed > ());
}
}
template <class From, class To>
void test_convert_neg_float(From from, const boost::mpl::true_&)
{
from = -from;
To t3(from);
To t4 = from.template convert_to<To>();
To answer(from.str());
To tol = (std::max)(std::numeric_limits<To>::epsilon(), To(std::numeric_limits<From>::epsilon())) * 2;
BOOST_CHECK_CLOSE_FRACTION(t3, answer, tol);
BOOST_CHECK_CLOSE_FRACTION(t4, answer, tol);
}
template <class From, class To>
void test_convert_neg_float(From const&, const boost::mpl::false_&)
{
}
template <class From, class To>
void test_convert_imp(boost::mpl::int_<number_kind_floating_point> const&, boost::mpl::int_<number_kind_floating_point> const&)
{
for (unsigned i = 0; i < 100; ++i)
{
From from = generate_random<From>();
To t1(from);
To t2 = from.template convert_to<To>();
To answer(from.str());
To tol = (std::max)(std::numeric_limits<To>::epsilon(), To(std::numeric_limits<From>::epsilon())) * 2;
BOOST_CHECK_CLOSE_FRACTION(t1, answer, tol);
BOOST_CHECK_CLOSE_FRACTION(t2, answer, tol);
test_convert_neg_float<From, To>(from, boost::mpl::bool_ < std::numeric_limits<From>::is_signed && std::numeric_limits<To>::is_signed > ());
}
}
template <class From, class To>
void test_convert()
{
test_convert_imp<From, To>(typename number_category<From>::type(), typename number_category<To>::type());
}
int main()
{
test_convert<mpf_float_50, cpp_int>();
test_convert<mpf_float_50, int128_t>();
test_convert<mpf_float_50, uint128_t>();
test_convert<mpf_float_50, cpp_rational>();
test_convert<mpf_float_50, cpp_dec_float_50>();
test_convert<mpf_float_50, mpz_int>();
test_convert<mpf_float_50, mpq_rational>();
#if defined(HAS_MPFR)
test_convert<mpf_float_50, mpfr_float_50>();
#endif
#if defined(HAS_MPFI)
test_convert<mpf_float_50, mpfi_float_50>();
#endif
#ifdef HAS_TOMMATH
test_convert<mpf_float_50, tom_int>();
test_convert<mpf_float_50, tom_rational>();
#endif
#ifdef HAS_FLOAT128
test_convert<mpf_float_50, float128>();
#endif
return boost::report_errors();
}
#else
int main() { return 0; }
#endif
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