1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10export namespace std {
11  // [optional.optional], class template optional
12  using std::optional;
13
14  // [optional.nullopt], no-value state indicator
15  using std::nullopt;
16  using std::nullopt_t;
17
18  // [optional.bad.access], class bad_optional_access
19  using std::bad_optional_access;
20
21  // [optional.relops], relational operators
22  using std::operator==;
23  using std::operator!=;
24  using std::operator<;
25  using std::operator>;
26  using std::operator<=;
27  using std::operator>=;
28  using std::operator<=>;
29
30  // [optional.specalg], specialized algorithms
31  using std::swap;
32
33  using std::make_optional;
34
35  // [optional.hash], hash support
36  using std::hash;
37} // namespace std
38