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      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 
     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