libstdc++-v3/testsuite/26_numerics/random/independent_bits_engine/operators/serialize.cc

   1 // { dg-options "-std=c++0x" }
   2 //
   3 // 2008-11-24  Edward M. Smith-Rowland <3dw4rd@verizon.net>
   4 //
   5 // Copyright (C) 2008, 2009 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 // 26.4.4.1 class template discard_block_engine [rand.adapt.disc]
  23 // 26.4.2.3 concept RandomNumberEngineAdaptor [rand.concept.adapt]
  24
  25 #include <random>
  26 #include <sstream>
  27 #include <testsuite_hooks.h>
  28
  29 void
  30 test01()
  31 {
  32   bool test __attribute__((unused)) = true;
  33
  34   std::stringstream str;
  35   std::independent_bits_engine
  36     <std::subtract_with_carry_engine<uint_fast64_t, 48, 5, 12>,
  37      48, uint_fast64_t> 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 }