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//===----------------------------------------------------------------------===//
//
// 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<InputIterator Iter1, InputIterator Iter2,
// Predicate<auto, Iter1::value_type, Iter2::value_type> Pred>
// requires CopyConstructible<Pred>
// pair<Iter1, Iter2>
// mismatch(Iter1 first1, Iter1 last1, Iter2 first2, Pred pred);
#include <algorithm>
#include <functional>
#include <cassert>
#include "test_iterators.h"
#if _LIBCPP_STD_VER > 11
#define HAS_FOUR_ITERATOR_VERSION
#endif
int main()
{
int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
int ib[] = {0, 1, 2, 3, 0, 1, 2, 3};
assert(std::mismatch(input_iterator<const int*>(ia),
input_iterator<const int*>(ia + sa),
input_iterator<const int*>(ib),
std::equal_to<int>()) ==
(std::pair<input_iterator<const int*>,
input_iterator<const int*> >(
input_iterator<const int*>(ia+3),
input_iterator<const int*>(ib+3))));
#ifdef HAS_FOUR_ITERATOR_VERSION
assert(std::mismatch(input_iterator<const int*>(ia),
input_iterator<const int*>(ia + sa),
input_iterator<const int*>(ib),
input_iterator<const int*>(ib + sa),
std::equal_to<int>()) ==
(std::pair<input_iterator<const int*>,
input_iterator<const int*> >(
input_iterator<const int*>(ia+3),
input_iterator<const int*>(ib+3))));
#endif
assert(std::mismatch(ia, ia + sa, ib, std::equal_to<int>()) ==
(std::pair<int*,int*>(ia+3,ib+3)));
#ifdef HAS_FOUR_ITERATOR_VERSION
assert(std::mismatch(ia, ia + sa, ib, ib + sa, std::equal_to<int>()) ==
(std::pair<int*,int*>(ia+3,ib+3)));
assert(std::mismatch(ia, ia + sa, ib, ib + 2, std::equal_to<int>()) ==
(std::pair<int*,int*>(ia+2,ib+2)));
#endif
}
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