1 // { dg-do run { target c++11 } }
2 // { dg-require-cstdint "" }
3 // { dg-require-little-endian "" }
4 //
5 // 2008-11-24 Edward M. Smith-Rowland <3dw4rd@verizon.net>
6 // 2012-08-28 Ulrich Drepper <drepper@gmail.com>, adapted for SFMT
7 //
8 // Copyright (C) 2008-2021 Free Software Foundation, Inc.
9 //
10 // This file is part of the GNU ISO C++ Library. This library is free
11 // software; you can redistribute it and/or modify it under the
12 // terms of the GNU General Public License as published by the
13 // Free Software Foundation; either version 3, or (at your option)
14 // any later version.
15 //
16 // This library is distributed in the hope that it will be useful,
17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 // GNU General Public License for more details.
20 //
21 // You should have received a copy of the GNU General Public License along
22 // with this library; see the file COPYING3. If not see
23 // <http://www.gnu.org/licenses/>.
24
25 // 26.4.3.2 Class template mersenne_twister_engine [rand.eng.mers]
26 // 26.4.2.2 Concept RandomNumberEngine [rand.concept.eng]
27
28 #include <sstream>
29 #include <ext/random>
30 #include <testsuite_hooks.h>
31
32 void
test01()33 test01()
34 {
35 std::stringstream str;
36 __gnu_cxx::sfmt19937 u, v;
37
38 u(); // advance
39 str << u;
40
41 VERIFY( !(u == v) );
42
43 str >> v;
44 VERIFY( u == v );
45 for (unsigned i = 0; i < 1000; ++i)
46 VERIFY( u() == v() );
47
48 str.clear();
49 str << v;
50
51 u();
52 u();
53 u();
54
55 str >> u;
56 VERIFY( u == v );
57 for (unsigned i = 0; i < 1000; ++i)
58 VERIFY( u() == v() );
59 }
60
main()61 int main()
62 {
63 test01();
64 return 0;
65 }
66