2 //===----------------------------------------------------------------------===//
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
8 //===----------------------------------------------------------------------===//
10 export namespace std {
11 // [optional.optional], class template optional
14 // [optional.nullopt], no-value state indicator
18 // [optional.bad.access], class bad_optional_access
19 using std::bad_optional_access;
21 // [optional.relops], relational operators
22 using std::operator==;
23 using std::operator!=;
26 using std::operator<=;
27 using std::operator>=;
28 using std::operator<=>;
30 // [optional.specalg], specialized algorithms
33 using std::make_optional;
35 // [optional.hash], hash support