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, size_t w, size_t n, size_t m, size_t r,
12 // UIntType a, size_t u, UIntType d, size_t s,
13 // UIntType b, size_t t, UIntType c, size_t l, UIntType f>
14 // class mersenne_twister_engine;
15
16 // void discard(unsigned long long z);
17
18 #include <random>
19 #include <cassert>
20
21 #include "test_macros.h"
22
23 void
test1()24 test1()
25 {
26 std::mt19937 e1;
27 std::mt19937 e2 = e1;
28 assert(e1 == e2);
29 e1.discard(3);
30 assert(e1 != e2);
31 (void)e2();
32 (void)e2();
33 (void)e2();
34 assert(e1 == e2);
35 }
36
37 void
test2()38 test2()
39 {
40 std::mt19937_64 e1;
41 std::mt19937_64 e2 = e1;
42 assert(e1 == e2);
43 e1.discard(3);
44 assert(e1 != e2);
45 (void)e2();
46 (void)e2();
47 (void)e2();
48 assert(e1 == e2);
49 }
50
main(int,char **)51 int main(int, char**)
52 {
53 test1();
54 test2();
55
56 return 0;
57 }
58