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

   1
   2 // 2011-01-13  Paolo Carlini  <paolo.carlini@oracle.com>
   3 //
   4 // Copyright (C) 2011-2024 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 // 25.2.12 [alg.is_permutation] Is permutation
  22
  23 // { dg-do compile { target c++11 } }
  24
  25 #include <algorithm>
  26 #include <testsuite_iterators.h>
  27
  28 using __gnu_test::forward_iterator_wrapper;
  29
  30 struct X { };
  31 bool operator==(const X&, const X) { return true; }
  32
  33 struct Y { };
  34 bool predicate(const Y&, const Y&) { return true; }
  35
  36 bool
  37 test1(forward_iterator_wrapper<X>& x1,
  38       forward_iterator_wrapper<X>& x2)
  39 {
  40   return std::is_permutation(x1, x1, x2);
  41 }
  42
  43 bool
  44 test2(forward_iterator_wrapper<Y>& y1,
  45       forward_iterator_wrapper<Y>& y2)
  46 {
  47   return std::is_permutation(y1, y1, y2, predicate);
  48 }