78 lines
1.7 KiB
C++
78 lines
1.7 KiB
C++
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///////////////////////////////////////////////////////////////
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// Copyright 2012 John Maddock. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_
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//
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#ifdef _MSC_VER
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# define _SCL_SECURE_NO_WARNINGS
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#endif
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#include <boost/detail/lightweight_test.hpp>
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#include <boost/array.hpp>
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#include "test.hpp"
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#include <boost/multiprecision/cpp_int.hpp>
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int main()
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{
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using namespace boost::multiprecision;
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//
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// Test interconversions between different precisions:
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//
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cpp_int i1(2);
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int128_t i2(3);
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int256_t i3(4);
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number<cpp_int_backend<32, 32, signed_magnitude, checked, void> > i4(5);
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i1 = i3;
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BOOST_TEST(i1 == 4);
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i1 = i4;
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BOOST_TEST(i1 == 5);
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i3 = -1234567;
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i4 = -5677334;
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i1 = i3;
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BOOST_TEST(i1 == -1234567);
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i1 = i4;
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BOOST_TEST(i1 == -5677334);
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i3 = i2;
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BOOST_TEST(i3 == 3);
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i3 = -1234567;
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uint128_t i5(i3);
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BOOST_TEST(i5 == -1234567);
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int128_t i6(i4);
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BOOST_TEST(i6 == -5677334);
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number<cpp_int_backend<32, 32, signed_magnitude, unchecked, void>, et_off> i7(i3);
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BOOST_TEST(i7 == -1234567);
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int256_t i8(i6);
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BOOST_TEST(i8 == -5677334);
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i7.assign(4.0);
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BOOST_TEST(i7 == 4);
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number<cpp_int_backend<30, 30, signed_magnitude, checked, void>, et_off> i9(-5677334);
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i7 = i9;
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BOOST_TEST(i7 == -5677334);
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i7 = number<cpp_int_backend<32, 32, signed_magnitude, checked, void>, et_off>(i9);
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BOOST_TEST(i7 == -5677334);
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i9 = static_cast<number<cpp_int_backend<30, 30, signed_magnitude, checked, void>, et_off> >(i7);
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BOOST_TEST(i9 == -5677334);
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++i9;
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i7 = i9;
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BOOST_TEST(i7 == 1 - 5677334);
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return boost::report_errors();
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}
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