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60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
/*
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Copyright 2020 Glen Joseph Fernandes
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(glenjofe@gmail.com)
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Distributed under the Boost Software License, Version 1.0.
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(http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include <boost/config.hpp>
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#if !defined(BOOST_NO_CXX11_CONSTEXPR) && \
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(!defined(BOOST_MSVC) || (BOOST_MSVC >= 1922))
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#include <boost/operators.hpp>
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#include <boost/static_assert.hpp>
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namespace {
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class Value
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: boost::operators<Value> {
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public:
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BOOST_OPERATORS_CONSTEXPR explicit Value(int v)
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: v_(v) { }
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BOOST_OPERATORS_CONSTEXPR bool
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operator<(const Value& x) const {
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return v_ < x.v_;
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}
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BOOST_OPERATORS_CONSTEXPR bool
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operator==(const Value& x) const {
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return v_ == x.v_;
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}
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private:
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int v_;
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};
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} // namespace
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BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) == Value(2)));
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BOOST_STATIC_ASSERT(Value(1) != Value(2));
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BOOST_STATIC_ASSERT(Value(1) < Value(2));
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BOOST_STATIC_ASSERT(Value(1) <= Value(2));
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BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) > Value(2)));
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BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) >= Value(2)));
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BOOST_STATIC_ASSERT(!static_cast<bool>(Value(2) == Value(1)));
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BOOST_STATIC_ASSERT(Value(2) != Value(1));
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BOOST_STATIC_ASSERT(!static_cast<bool>(Value(2) < Value(1)));
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BOOST_STATIC_ASSERT(!static_cast<bool>(Value(2) <= Value(1)));
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BOOST_STATIC_ASSERT(Value(2) > Value(1));
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BOOST_STATIC_ASSERT(Value(2) >= Value(1));
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BOOST_STATIC_ASSERT(Value(1) == Value(1));
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BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) != Value(1)));
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BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) < Value(1)));
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BOOST_STATIC_ASSERT(Value(1) <= Value(1));
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BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) > Value(1)));
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BOOST_STATIC_ASSERT(Value(1) >= Value(1));
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#endif
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