//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <algorithm>

// template<ForwardIterator Iter1, ForwardIterator Iter2>
//   requires HasEqualTo<Iter1::value_type, Iter2::value_type>
//   Iter1
//   find_end(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2);

#include <algorithm>
#include <cassert>

#include "test_iterators.h"

template <class Iter1, class Iter2>
void
test()
{
    int ia[] = {0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 0, 1, 2, 3, 0, 1, 2, 0, 1, 0};
    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
    int b[] = {0};
    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(b), Iter2(b+1)) == Iter1(ia+sa-1));
    int c[] = {0, 1};
    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(c), Iter2(c+2)) == Iter1(ia+18));
    int d[] = {0, 1, 2};
    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(d), Iter2(d+3)) == Iter1(ia+15));
    int e[] = {0, 1, 2, 3};
    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(e), Iter2(e+4)) == Iter1(ia+11));
    int f[] = {0, 1, 2, 3, 4};
    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(f), Iter2(f+5)) == Iter1(ia+6));
    int g[] = {0, 1, 2, 3, 4, 5};
    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(g), Iter2(g+6)) == Iter1(ia));
    int h[] = {0, 1, 2, 3, 4, 5, 6};
    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(h), Iter2(h+7)) == Iter1(ia+sa));
    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(b), Iter2(b)) == Iter1(ia+sa));
    assert(std::find_end(Iter1(ia), Iter1(ia), Iter2(b), Iter2(b+1)) == Iter1(ia));
}

int main()
{
    test<forward_iterator<const int*>, forward_iterator<const int*> >();
    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
}
