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 // UNSUPPORTED: no-localization
10 
11 // <random>
12 
13 // template<class Engine, size_t p, size_t r>
14 // class discard_block_engine
15 
16 // template <class charT, class traits,
17 //           class Engine, size_t p, size_t r>
18 // basic_ostream<charT, traits>&
19 // operator<<(basic_ostream<charT, traits>& os,
20 //            const discard_block_engine<Engine, p, r>& x);
21 //
22 // template <class charT, class traits,
23 //           class Engine, size_t p, size_t r>
24 // basic_istream<charT, traits>&
25 // operator>>(basic_istream<charT, traits>& is,
26 //            discard_block_engine<Engine, p, r>& x);
27 
28 #include <random>
29 #include <sstream>
30 #include <cassert>
31 
32 #include "test_macros.h"
33 
34 void
35 test1()
36 {
37     typedef std::ranlux24 E;
38     E e1;
39     e1.discard(100);
40     std::ostringstream os;
41     os << e1;
42     std::istringstream is(os.str());
43     E e2;
44     is >> e2;
45     assert(e1 == e2);
46 }
47 
48 void
49 test2()
50 {
51     typedef std::ranlux48 E;
52     E e1;
53     e1.discard(100);
54     std::ostringstream os;
55     os << e1;
56     std::istringstream is(os.str());
57     E e2;
58     is >> e2;
59     assert(e1 == e2);
60 }
61 
62 int main(int, char**)
63 {
64     test1();
65     test2();
66 
67   return 0;
68 }
69