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52066eae | 1 | // { dg-do run { target c++11 } } |
453def3e | 2 | // { dg-require-cstdint "" } |
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3 | // |
4 | // 2008-11-24 Edward M. Smith-Rowland <3dw4rd@verizon.net> | |
5 | // | |
99dee823 | 6 | // Copyright (C) 2008-2021 Free Software Foundation, Inc. |
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7 | // |
8 | // This file is part of the GNU ISO C++ Library. This library is free | |
9 | // software; you can redistribute it and/or modify it under the | |
10 | // terms of the GNU General Public License as published by the | |
748086b7 | 11 | // Free Software Foundation; either version 3, or (at your option) |
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12 | // any later version. |
13 | // | |
14 | // This library is distributed in the hope that it will be useful, | |
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | // GNU General Public License for more details. | |
18 | // | |
19 | // You should have received a copy of the GNU General Public License along | |
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20 | // with this library; see the file COPYING3. If not see |
21 | // <http://www.gnu.org/licenses/>. | |
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22 | |
23 | // 26.4.4.1 class template discard_block_engine [rand.adapt.disc] | |
24 | // 26.4.2.3 concept RandomNumberEngineAdaptor [rand.concept.adapt] | |
25 | ||
26 | #include <random> | |
27 | #include <sstream> | |
28 | #include <testsuite_hooks.h> | |
29 | ||
30 | void | |
31 | test01() | |
32 | { | |
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33 | std::stringstream str; |
34 | std::shuffle_order_engine | |
35 | < | |
36 | std::linear_congruential_engine<uint_fast32_t,16807UL, 0UL, 2147483647UL>, | |
37 | 256 | |
38 | > u, v; | |
39 | ||
40 | u(); // advance | |
41 | str << u; | |
42 | ||
43 | VERIFY( !(u == v) ); | |
44 | ||
45 | str >> v; | |
46 | VERIFY( u == v ); | |
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47 | for (unsigned i = 0; i < 1000; ++i) |
48 | VERIFY( u() == v() ); | |
49 | ||
50 | str.clear(); | |
51 | str << v; | |
52 | ||
53 | u(); | |
54 | u(); | |
55 | u(); | |
56 | ||
57 | str >> u; | |
58 | VERIFY( u == v ); | |
59 | for (unsigned i = 0; i < 1000; ++i) | |
60 | VERIFY( u() == v() ); | |
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61 | } |
62 | ||
63 | int main() | |
64 | { | |
65 | test01(); | |
66 | return 0; | |
67 | } |