libstdc++-v3/testsuite/25_algorithms/is_permutation/check_type2.cc

   1 // Copyright (C) 2013-2014 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // 25.2.12 [alg.is_permutation] Is permutation
  19
  20 // { dg-do compile }
  21 // { dg-options " -std=gnu++1y " }
  22
  23 #include <algorithm>
  24 #include <testsuite_iterators.h>
  25
  26 using __gnu_test::forward_iterator_wrapper;
  27
  28 struct X { };
  29 bool operator==(const X&, const X) { return true; }
  30
  31 struct Y { };
  32 bool predicate(const Y&, const Y&) { return true; }
  33
  34 bool
  35 test1(forward_iterator_wrapper<X>& x1,
  36       forward_iterator_wrapper<X>& x2)
  37 {
  38   return std::is_permutation(x1, x1, x2, x2);
  39 }
  40
  41 bool
  42 test2(forward_iterator_wrapper<Y>& y1,
  43       forward_iterator_wrapper<Y>& y2)
  44 {
  45   return std::is_permutation(y1, y1, y2, y2, predicate);
  46 }