libstdc++-v3/testsuite/26_numerics/random/random_device/cons/token.cc

   1 // { dg-options "-std=c++0x" }
   2 // { dg-require-cstdint "" }
   3 //
   4 // 2008-11-24  Edward M. Smith-Rowland <3dw4rd@verizon.net>
   5 //
   6 // Copyright (C) 2008-2013 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 // 26.4.6 class random_device [rand.device]
  24 // 26.4.6 [3]
  25
  26 #include <random>
  27 #include <testsuite_hooks.h>
  28
  29 void
  30 test01()
  31 {
  32   bool test __attribute__((unused)) = true;
  33
  34 #ifdef _GLIBCXX_USE_RANDOM_TR1
  35   std::random_device x("/dev/random");
  36 #else
  37   std::random_device x("0");
  38 #endif
  39
  40   VERIFY( x.min() == std::numeric_limits<std::random_device::result_type>::min() );
  41   VERIFY( x.max() == std::numeric_limits<std::random_device::result_type>::max() );
  42 }
  43
  44 int main()
  45 {
  46   test01();
  47   return 0;
  48 }