Files
multiprecision/test/test_cpp_int_conv.cpp
John Maddock af9e0c2fe7 Add more explicit constructors and tests for them.
Centralise digits10 to digits2 conversions.

[SVN r80112]
2012-08-21 14:42:15 +00:00

56 lines
1.1 KiB
C++

///////////////////////////////////////////////////////////////
// Copyright 2012 John Maddock. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_
//
#ifdef _MSC_VER
# define _SCL_SECURE_NO_WARNINGS
#endif
#include <boost/detail/lightweight_test.hpp>
#include <boost/array.hpp>
#include "test.hpp"
#include <boost/multiprecision/cpp_int.hpp>
int main()
{
using namespace boost::multiprecision;
//
// Test interconversions between different precisions:
//
cpp_int i1(2);
int128_t i2(3);
int256_t i3(4);
number<cpp_int_backend<32, true, void> > i4(5);
i1 = i3;
BOOST_TEST(i1 == 4);
i1 = i4;
BOOST_TEST(i1 == 5);
i3 = -1234567;
i4 = -5677334;
i1 = i3;
BOOST_TEST(i1 == -1234567);
i1 = i4;
BOOST_TEST(i1 == -5677334);
i3 = i2;
BOOST_TEST(i3 == 3);
i3 = -1234567;
uint128_t i5(i3);
BOOST_TEST(i5 == -1234567);
int128_t i6(i4);
BOOST_TEST(i6 == -5677334);
return boost::report_errors();
}