1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // <random>
10
11 // template <class UIntType, UIntType a, UIntType c, UIntType m>
12 // class linear_congruential_engine;
13
14 // linear_congruential_engine();
15
16 #include <random>
17 #include <cassert>
18
19 #include "test_macros.h"
20
21 template <class T, T a, T c, T m>
22 void
test1()23 test1()
24 {
25 typedef std::linear_congruential_engine<T, a, c, m> LCE;
26 LCE e1;
27 LCE e2;
28 e2.seed();
29 assert(e1 == e2);
30 }
31
32 template <class T>
33 void
test()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(static_cast<T>(-1));
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
main(int,char **)51 int main(int, char**)
52 {
53 test<unsigned short>();
54 test<unsigned int>();
55 test<unsigned long>();
56 test<unsigned long long>();
57
58 return 0;
59 }
60