libstdc++-v3/testsuite/26_numerics/random/discard_block_engine/operators/equal.cc

   1 // { dg-options "-std=c++0x" }
   2 //
   3 // 2008-11-24  Edward M. Smith-Rowland <3dw4rd@verizon.net>
   4 //
   5 // Copyright (C) 2008 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 2, 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 COPYING.  If not, write to the Free
  20 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  21 // USA.
  22
  23 // 26.4.4.1 class template discard_block_engine [rand.adapt.disc]
  24 // 26.4.2.3 concept RandomNumberEngineAdaptor [rand.concept.adapt]
  25
  26 #include <random>
  27 #include <testsuite_hooks.h>
  28
  29 void
  30 test01()
  31 {
  32   bool test __attribute__((unused)) = true;
  33
  34   std::discard_block_engine
  35     <
  36     std::subtract_with_carry_engine<long, 24, 10, 24>,
  37     389, 24
  38     > u, v;
  39
  40   VERIFY( u == v );
  41
  42   u.discard(100);
  43   v.discard(100);
  44
  45   VERIFY( u == v );
  46 }
  47
  48 int main()
  49 {
  50   test01();
  51   return 0;
  52 }