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// { dg-do run { target c++11 } }
// 2011-01-13 Paolo Carlini <paolo.carlini@oracle.com>
//
// Copyright (C) 2011-2024 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// 25.2.12 [alg.is_permutation] Is permutation
#include <algorithm>
#include <functional>
#include <testsuite_hooks.h>
struct my_equal_to
{
bool
operator()(int __x, int __y) const
{ return __x % 10 == __y % 10; }
};
const int arr0[] = { 11, 22, 33, 44, 55 };
void
do_test(int arr1[5], bool np = true)
{
do
VERIFY( std::is_permutation(arr1, arr1 + 5, arr0) == np );
while (std::next_permutation(arr1, arr1 + 5));
}
template<typename Predicate>
void
do_test(int arr1[5], Predicate pred, bool np = true)
{
do
VERIFY( std::is_permutation(arr1, arr1 + 5, arr0, pred) == np );
while (std::next_permutation(arr1, arr1 + 5));
}
void test01()
{
int arr1[] = { 11, 22, 33, 44, 55 };
do_test(arr1);
int arr2[] = { 11, 33, 33, 44, 55 };
do_test(arr2, false);
int arr3[] = { 33, 33, 33, 44, 44 };
do_test(arr3, false);
int arr4[] = { 11, 22, 33, 44, 55 };
do_test(arr4, std::equal_to<int>());
int arr5[] = { 11, 33, 33, 44, 55 };
do_test(arr5, std::equal_to<int>(), false);
int arr6[] = { 33, 33, 33, 44, 44 };
do_test(arr6, std::equal_to<int>(), false);
int arr7[] = { 1, 2, 3, 4, 5 };
do_test(arr7, my_equal_to());
int arr8[] = { 1, 3, 3, 4, 5 };
do_test(arr8, my_equal_to(), false);
int arr9[] = { 3, 3, 3, 4, 4 };
do_test(arr9, my_equal_to(), false);
int arr10[] = { 111, 222, 333, 444, 555 };
do_test(arr10, my_equal_to());
int arr11[] = { 1, 222, 33, 4, 55 };
do_test(arr11, my_equal_to());
int arr12[] = { 111, 333, 333, 444, 555 };
do_test(arr12, my_equal_to(), false);
int arr13[] = { 333, 333, 333, 444, 444 };
do_test(arr13, my_equal_to(), false);
}
int main()
{
test01();
return 0;
}
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