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

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-cstdint "" }
   3 // { dg-require-little-endian "" }
   4 //
   5 // 2010-03-16  Paolo Carlini  <paolo.carlini@oracle.com>
   6 // 2012-08-28  Ulrich Drepper  <drepper@gmail.com>, adapted for SFMT
   7 //
   8 // Copyright (C) 2010-2023 Free Software Foundation, Inc.
   9 //
  10 // This file is part of the GNU ISO C++ Library.  This library is free
  11 // software; you can redistribute it and/or modify it under the
  12 // terms of the GNU General Public License as published by the
  13 // Free Software Foundation; either version 3, or (at your option)
  14 // any later version.
  15 //
  16 // This library is distributed in the hope that it will be useful,
  17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 // GNU General Public License for more details.
  20 //
  21 // You should have received a copy of the GNU General Public License along
  22 // with this library; see the file COPYING3.  If not see
  23 // <http://www.gnu.org/licenses/>.
  24
  25 // 26.5.3.2 Class template mersenne_twister_engine [rand.eng.mers]
  26
  27 #include <ext/random>
  28 #include <testsuite_hooks.h>
  29
  30 void
  31 test01()
  32 {
  33   __gnu_cxx::sfmt19937 u, v;
  34
  35   VERIFY( !(u != v) );
  36
  37   u.discard(100);
  38   v.discard(100);
  39
  40   VERIFY( !(u != v) );
  41
  42   v.discard(1);
  43
  44   VERIFY( u != v );
  45 }
  46
  47 int main()
  48 {
  49   test01();
  50   return 0;
  51 }