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: libcpp-has-no-random-device
10 
11 // <random>
12 
13 // class random_device;
14 
15 // double entropy() const;
16 
17 #include <random>
18 #include <cassert>
19 
20 #include "test_macros.h"
21 
22 int main(int, char**)
23 {
24     std::random_device r;
25     double e = r.entropy();
26     ((void)e); // Prevent unused warning
27 
28   return 0;
29 }
30