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();
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> LCE;
25     typedef typename LCE::result_type result_type;
26     LCE e1;
27     LCE e2;
28     e2.seed();
29     assert(e1 == e2);
30 }
31 
32 template <class T>
33 void
34 test()
35 {
36     test1<T, 0, 0, 0>();
37     test1<T, 0, 1, 2>();
38     test1<T, 1, 1, 2>();
39     const T M(~0);
40     test1<T, 0, 0, M>();
41     test1<T, 0, M-2, M>();
42     test1<T, 0, M-1, M>();
43     test1<T, M-2, 0, M>();
44     test1<T, M-2, M-2, M>();
45     test1<T, M-2, M-1, M>();
46     test1<T, M-1, 0, M>();
47     test1<T, M-1, M-2, M>();
48     test1<T, M-1, M-1, M>();
49 }
50 
51 int main()
52 {
53     test<unsigned short>();
54     test<unsigned int>();
55     test<unsigned long>();
56     test<unsigned long long>();
57 }
58