1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // UNSUPPORTED: libcpp-has-no-threads
11 
12 // <atomic>
13 
14 // typedef enum memory_order
15 // {
16 //     memory_order_relaxed, memory_order_consume, memory_order_acquire,
17 //     memory_order_release, memory_order_acq_rel, memory_order_seq_cst
18 // } memory_order;
19 
20 #include <atomic>
21 #include <cassert>
22 
main()23 int main()
24 {
25     assert(std::memory_order_relaxed == 0);
26     assert(std::memory_order_consume == 1);
27     assert(std::memory_order_acquire == 2);
28     assert(std::memory_order_release == 3);
29     assert(std::memory_order_acq_rel == 4);
30     assert(std::memory_order_seq_cst == 5);
31     std::memory_order o = std::memory_order_seq_cst;
32     assert(o == 5);
33 }
34