1 // 2001-06-18 Benjamin Kosnik <bkoz@redhat.com>
2
3 // Copyright (C) 2001-2021 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 3, 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 COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
19
20 // 20.3.3 Comparisons
21
22 #include <functional>
23
24 class gnu_obj
25 {
26 int i;
27 public:
gnu_obj(int arg=0)28 gnu_obj(int arg = 0): i(arg) { }
operator ==(const gnu_obj & rhs) const29 bool operator==(const gnu_obj& rhs) const { return i == rhs.i; }
operator !=(const gnu_obj & rhs) const30 bool operator!=(const gnu_obj& rhs) const { return i != rhs.i; }
operator <(const gnu_obj & rhs) const31 bool operator<(const gnu_obj& rhs) const { return i < rhs.i; }
32 };
33
34 template<typename T>
35 struct gnu_t
36 {
37 bool b;
38 public:
gnu_tgnu_t39 gnu_t(bool arg = 0): b(arg) { }
operator ==gnu_t40 bool operator==(const gnu_t& rhs) const { return b == rhs.b; }
operator !=gnu_t41 bool operator!=(const gnu_t& rhs) const { return b != rhs.b; }
operator <gnu_t42 bool operator<(const gnu_t& rhs) const { return b == rhs.b; }
43 };
44
45 template struct std::not_equal_to<void*>;
46 template struct std::not_equal_to<gnu_obj>;
47 template struct std::not_equal_to<gnu_t<long> >;
48
main()49 int main()
50 {
51 return 0;
52 }
53