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

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-cstdint "" }
   3 //
   4 // 2010-03-16  Paolo Carlini  <paolo.carlini@oracle.com>
   5 //
   6 // Copyright (C) 2010-2019 Free Software Foundation, Inc.
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 3, or (at your option)
  12 // any later version.
  13 //
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18 //
  19 // You should have received a copy of the GNU General Public License along
  20 // with this library; see the file COPYING3.  If not see
  21 // <http://www.gnu.org/licenses/>.
  22
  23 // 26.5.4.2 class template independent_bits_engine [rand.adapt.bits]
  24
  25 #include <random>
  26 #include <testsuite_hooks.h>
  27
  28 void
  29 test01()
  30 {
  31   std::independent_bits_engine
  32     <std::subtract_with_carry_engine<uint_fast64_t, 48, 5, 12>,
  33      48, uint_fast64_t> u, v;
  34
  35   VERIFY( !(u != v) );
  36
  37   u.discard(100);
  38   v.discard(100);
  39
  40   VERIFY( !(u != v) );
  41 }
  42
  43 int main()
  44 {
  45   test01();
  46   return 0;
  47 }