1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// UNSUPPORTED: no-threads
10
11// <future>
12
13// enum class launch
14// {
15// async = 1,
16// deferred = 2,
17// any = async | deferred /* EXTENSION */
18// };
19
20#include <future>
21#include <cassert>
22
23#include "test_macros.h"
24
25int main(int, char**)
26{
27#if TEST_STD_VER < 11
28 LIBCPP_STATIC_ASSERT(static_cast<int>(std::launch::any) ==
29 (static_cast<int>(std::launch::async) | static_cast<int>(std::launch::deferred)), "");
30#else
31 LIBCPP_STATIC_ASSERT(std::launch::any == (std::launch::async | std::launch::deferred), "");
32 static_assert(std::launch(0) == (std::launch::async & std::launch::deferred), "");
33 LIBCPP_STATIC_ASSERT(std::launch::any == (std::launch::async ^ std::launch::deferred), "");
34 LIBCPP_STATIC_ASSERT(std::launch::deferred == ~std::launch::async, "");
35 std::launch x = std::launch::async;
36 x &= std::launch::deferred;
37 assert(x == std::launch(0));
38 x = std::launch::async;
39 x |= std::launch::deferred;
40 LIBCPP_ASSERT(x == std::launch::any);
41 x ^= std::launch::deferred;
42 assert(x == std::launch::async);
43#endif
44 static_assert(static_cast<int>(std::launch::async) == 1, "");
45 static_assert(static_cast<int>(std::launch::deferred) == 2, "");
46
47 return 0;
48}
49

source code of libcxx/test/std/thread/futures/futures.overview/launch.pass.cpp