//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <random>
// class random_device;
// double entropy() const;
#include <random>
#include <cassert>
int main()
{
std::random_device r;
double e = r.entropy();
}