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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 UIntType, UIntType a, UIntType c, UIntType m>
     13 //   class linear_congruential_engine;
     14 
     15 // template <class charT, class traits,
     16 //           class UIntType, UIntType a, UIntType c, UIntType m>
     17 // basic_ostream<charT, traits>&
     18 // operator<<(basic_ostream<charT, traits>& os,
     19 //            const linear_congruential_engine<UIntType, a, c, m>& x);
     20 //
     21 // template <class charT, class traits,
     22 //           class UIntType, UIntType a, UIntType c, UIntType m>
     23 // basic_istream<charT, traits>&
     24 // operator>>(basic_istream<charT, traits>& is,
     25 //            linear_congruential_engine<UIntType, a, c, m>& x);
     26 
     27 #include <random>
     28 #include <sstream>
     29 #include <cassert>
     30 
     31 int main()
     32 {
     33     {
     34         typedef std::linear_congruential_engine<unsigned, 48271, 0, 2147483647> E;
     35         E e1;
     36         e1.discard(100);
     37         std::ostringstream os;
     38         os << e1;
     39         std::istringstream is(os.str());
     40         E e2;
     41         is >> e2;
     42         assert(e1 == e2);
     43     }
     44 }
     45