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// { dg-options "-std=c++0x" }

// { dg-require-cstdint "" }

//

// 2008-11-24  Edward M. Smith-Rowland <3dw4rd@verizon.net>

//

// Copyright (C) 2008, 2009, 2010, 2011 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 3, or (at your option)

// any later version.

//

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING3.  If not see

// <http://www.gnu.org/licenses/>.

// 26.4.4.1 class template discard_block_engine [rand.adapt.disc]

// 26.4.2.3 concept RandomNumberEngineAdaptor [rand.concept.adapt]

#include <random>

#include <sstream>

#include <testsuite_hooks.h>

void

test01()

{

  bool test __attribute__((unused)) = true;

  std::stringstream str;

  std::discard_block_engine

    <

    std::subtract_with_carry_engine<unsigned long, 24, 10, 24>,

    389, 24

    > u, v;

  u(); // advance

  str << u;

  VERIFY( !(u == v) );

  str >> v;

  VERIFY( u == v );

  for (unsigned i = 0; i < 1000; ++i)

    VERIFY( u() == v() );

  str.clear();

  str << v;

  u();

  u();

  u();

  str >> u;

  VERIFY( u == v );

  for (unsigned i = 0; i < 1000; ++i)

    VERIFY( u() == v() );

}

int main()

{

  test01();

  return 0;

}