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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 // linear_congruential_engine& operator=(const linear_congruential_engine&);
     16 
     17 #include <random>
     18 #include <cassert>
     19 
     20 template <class T, T a, T c, T m>
     21 void
     22 test1()
     23 {
     24     typedef std::linear_congruential_engine<T, a, c, m> E;
     25     E e1;
     26     E e2;
     27     assert(e1 == e2);
     28     e1();
     29     e2 = e1;
     30     assert(e1 == e2);
     31 }
     32 
     33 template <class T>
     34 void
     35 test()
     36 {
     37     test1<T, 0, 0, 0>();
     38     test1<T, 0, 1, 2>();
     39     test1<T, 1, 1, 2>();
     40     const T M(static_cast<T>(-1));
     41     test1<T, 0, 0, M>();
     42     test1<T, 0, M-2, M>();
     43     test1<T, 0, M-1, M>();
     44     test1<T, M-2, 0, M>();
     45     test1<T, M-2, M-2, M>();
     46     test1<T, M-2, M-1, M>();
     47     test1<T, M-1, 0, M>();
     48     test1<T, M-1, M-2, M>();
     49     test1<T, M-1, M-1, M>();
     50 }
     51 
     52 int main()
     53 {
     54     test<unsigned short>();
     55     test<unsigned int>();
     56     test<unsigned long>();
     57     test<unsigned long long>();
     58 }
     59