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

   1 // 2006-06-19  Paolo Carlini  <pcarlini@suse.de>
   2 //
   3 // Copyright (C) 2006-2013 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 // 5.1.4.5 class template discard_block [tr.rand.eng.disc]
  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   bool test __attribute__((unused)) = true;
  31   using std::tr1::discard_block;
  32   using std::tr1::subtract_with_carry;
  33
  34   std::stringstream str;
  35   discard_block
  36     <
  37     subtract_with_carry<long, (1 << 24), 10, 24>,
  38     389, 24
  39     > u, v;
  40
  41   u(); // advance
  42   str << u;
  43
  44   VERIFY( u != v );
  45
  46   str >> v;
  47   VERIFY( u == v );
  48 }
  49
  50 int main()
  51 {
  52   test01();
  53   return 0;
  54 }