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// <random>
11
12// class random_device;
13
14// double entropy() const;
15
16#include <random>
17#include <cassert>
18
19int main()
20{
21    std::random_device r;
22    double e = r.entropy();
23    ((void)e); // Prevent unused warning
24}
25