libstdc++-v3/testsuite/20_util/comparisons.cc

   1 // 2001-06-18  Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 2, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // 20.3.3 Comparisons
  22
  23 #include <functional>
  24
  25 class gnu_obj
  26 {
  27   int i;
  28 public:
  29   gnu_obj(int arg = 0): i(arg) { }
  30   bool operator==(const gnu_obj& rhs) const { return i == rhs.i; }
  31   bool operator!=(const gnu_obj& rhs) const { return i != rhs.i; }
  32   bool operator<(const gnu_obj& rhs) const { return i < rhs.i; }
  33 };
  34
  35 template<typename T>
  36   struct gnu_t
  37   {
  38     bool b;
  39   public:
  40     gnu_t(bool arg = 0): b(arg) { }
  41     bool operator==(const gnu_t& rhs) const { return b == rhs.b; }
  42     bool operator!=(const gnu_t& rhs) const { return b != rhs.b; }
  43     bool operator<(const gnu_t& rhs) const { return b == rhs.b; }
  44   };
  45
  46 template struct std::not_equal_to<void*>;
  47 template struct std::not_equal_to<gnu_obj>;
  48 template struct std::not_equal_to<gnu_t<long> >;
  49
  50 int main()
  51 {
  52   return 0;
  53 }