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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, size_t w, size_t n, size_t m, size_t r,
     13 //           UIntType a, size_t u, UIntType d, size_t s,
     14 //           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
     15 // class mersenne_twister_engine;
     16 
     17 // mersenne_twister_engine& operator=(const mersenne_twister_engine&);
     18 
     19 #include <random>
     20 #include <cassert>
     21 
     22 void
     23 test1()
     24 {
     25     typedef std::mt19937 E;
     26     E e1(2);
     27     (void)e1();
     28     E e2(5);
     29     e2 = e1;
     30     assert(e1 == e2);
     31     assert(e1() == e2());
     32     E::result_type k = e1();
     33     assert(e1 != e2);
     34     assert(e2() == k);
     35     assert(e1 == e2);
     36 }
     37 
     38 void
     39 test2()
     40 {
     41     typedef std::mt19937_64 E;
     42     E e1(3);
     43     (void)e1();
     44     E e2(5);
     45     e2 = e1;
     46     assert(e1 == e2);
     47     assert(e1() == e2());
     48     E::result_type k = e1();
     49     assert(e1 != e2);
     50     assert(e2() == k);
     51     assert(e1 == e2);
     52 }
     53 
     54 int main()
     55 {
     56     test1();
     57     test2();
     58 }
     59