libstdc++-v3/testsuite/ext/random/simd_fast_mersenne_twister_engine/operators/inequal.cc

   1 // { dg-options "-std=c++0x" }
   2 // { dg-require-cstdint "" }
   3 //
   4 // 2010-03-16  Paolo Carlini  <paolo.carlini@oracle.com>
   5 // 2012-08-28  Ulrich Drepper  <drepper@gmail.com>, adapted for SFMT
   6 //
   7 // Copyright (C) 2010, 2012 Free Software Foundation, Inc.
   8 //
   9 // This file is part of the GNU ISO C++ Library.  This library is free
  10 // software; you can redistribute it and/or modify it under the
  11 // terms of the GNU General Public License as published by the
  12 // Free Software Foundation; either version 3, or (at your option)
  13 // any later version.
  14 //
  15 // This library is distributed in the hope that it will be useful,
  16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 // GNU General Public License for more details.
  19 //
  20 // You should have received a copy of the GNU General Public License along
  21 // with this library; see the file COPYING3.  If not see
  22 // <http://www.gnu.org/licenses/>.
  23
  24 // 26.5.3.2 Class template mersenne_twister_engine [rand.eng.mers]
  25
  26 #include <ext/random>
  27 #include <testsuite_hooks.h>
  28
  29 void
  30 test01()
  31 {
  32   bool test __attribute__((unused)) = true;
  33
  34   __gnu_cxx::sfmt19937 u, v;
  35
  36   VERIFY( !(u != v) );
  37
  38   u.discard(100);
  39   v.discard(100);
  40
  41   VERIFY( !(u != v) );
  42
  43   v.discard(1);
  44
  45   VERIFY( u != v );
  46 }
  47
  48 int main()
  49 {
  50   test01();
  51   return 0;
  52 }