libstdc++-v3/testsuite/tr1/5_numerical_facilities/random/mersenne_twister/operators/serialize.cc

   1 // 2006-06-06  Paolo Carlini  <pcarlini@suse.de>
   2 //
   3 // Copyright (C) 2006-2022 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10 //
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 5.1.4.2 class template mersenne_twister [tr.rand.eng.mers]
  21 // 5.1.1 Table 16
  22
  23 #include <sstream>
  24 #include <tr1/random>
  25 #include <testsuite_hooks.h>
  26
  27 void
  28 test01()
  29 {
  30   using std::tr1::mersenne_twister;
  31
  32   std::stringstream str;
  33   mersenne_twister<
  34     unsigned long, 32, 624, 397, 31,
  35     0x9908b0dful, 11, 7,
  36     0x9d2c5680ul, 15,
  37     0xefc60000ul, 18> u, v;
  38
  39   u(); // advance
  40   str << u;
  41
  42   VERIFY( u != v );
  43
  44   str >> v;
  45   VERIFY( u == v );
  46 }
  47
  48 int main()
  49 {
  50   test01();
  51   return 0;
  52 }