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 // template<class IntType = int>
13 // class poisson_distribution
14 
15 // explicit poisson_distribution(RealType lambda = 1.0);
16 
17 #include <random>
18 #include <cassert>
19 
main()20 int main()
21 {
22     {
23         typedef std::poisson_distribution<> D;
24         D d;
25         assert(d.mean() == 1);
26     }
27     {
28         typedef std::poisson_distribution<> D;
29         D d(3.5);
30         assert(d.mean() == 3.5);
31     }
32 }
33