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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14
// <optional>
// template <class T> constexpr bool operator>= (const optional<T>& x, const optional<T>& y);
#include <optional>
using std::optional;
struct X
{
int i_;
constexpr X(int i) : i_(i) {}
};
constexpr bool operator >= ( const X &lhs, const X &rhs )
{ return lhs.i_ >= rhs.i_ ; }
int main()
{
{
typedef optional<X> O;
constexpr O o1; // disengaged
constexpr O o2; // disengaged
constexpr O o3{1}; // engaged
constexpr O o4{2}; // engaged
constexpr O o5{1}; // engaged
static_assert ( (o1 >= o1), "" );
static_assert ( (o1 >= o2), "" );
static_assert ( !(o1 >= o3), "" );
static_assert ( !(o1 >= o4), "" );
static_assert ( !(o1 >= o5), "" );
static_assert ( (o2 >= o1), "" );
static_assert ( (o2 >= o2), "" );
static_assert ( !(o2 >= o3), "" );
static_assert ( !(o2 >= o4), "" );
static_assert ( !(o2 >= o5), "" );
static_assert ( (o3 >= o1), "" );
static_assert ( (o3 >= o2), "" );
static_assert ( (o3 >= o3), "" );
static_assert ( !(o3 >= o4), "" );
static_assert ( (o3 >= o5), "" );
static_assert ( (o4 >= o1), "" );
static_assert ( (o4 >= o2), "" );
static_assert ( (o4 >= o3), "" );
static_assert ( (o4 >= o4), "" );
static_assert ( (o4 >= o5), "" );
static_assert ( (o5 >= o1), "" );
static_assert ( (o5 >= o2), "" );
static_assert ( (o5 >= o3), "" );
static_assert ( !(o5 >= o4), "" );
static_assert ( (o5 >= o5), "" );
}
}
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