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 // <chrono>
10 
11 // duration
12 
13 // Period shall be a specialization of ratio, diagnostic required.
14 
15 #include <chrono>
16 
17 template <int N, int D = 1>
18 class Ratio
19 {
20 public:
21     static const int num = N;
22     static const int den = D;
23 };
24 
25 int main(int, char**)
26 {
27     typedef std::chrono::duration<int, Ratio<1> > D;
28     D d;
29 
30   return 0;
31 }
32