1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <algorithm>
11
12// template<InputIterator Iter1, InputIterator Iter2>
13//   requires HasEqualTo<Iter1::value_type, Iter2::value_type>
14//   pair<Iter1, Iter2>
15//   mismatch(Iter1 first1, Iter1 last1, Iter2 first2);
16
17#include <algorithm>
18#include <cassert>
19
20#include "test_iterators.h"
21
22#if _LIBCPP_STD_VER > 11
23#define HAS_FOUR_ITERATOR_VERSION
24#endif
25
26int main()
27{
28    int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
29    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
30    int ib[] = {0, 1, 2, 3, 0, 1, 2, 3};
31    assert(std::mismatch(input_iterator<const int*>(ia),
32                         input_iterator<const int*>(ia + sa),
33                         input_iterator<const int*>(ib)) ==
34                         (std::pair<input_iterator<const int*>,
35                                    input_iterator<const int*> >(
36                            input_iterator<const int*>(ia+3),
37                            input_iterator<const int*>(ib+3))));
38
39#ifdef HAS_FOUR_ITERATOR_VERSION
40    assert(std::mismatch(input_iterator<const int*>(ia),
41                         input_iterator<const int*>(ia + sa),
42                         input_iterator<const int*>(ib),
43                         input_iterator<const int*>(ib + sa)) ==
44                         (std::pair<input_iterator<const int*>,
45                                    input_iterator<const int*> >(
46                            input_iterator<const int*>(ia+3),
47                            input_iterator<const int*>(ib+3))));
48
49    assert(std::mismatch(input_iterator<const int*>(ia),
50                         input_iterator<const int*>(ia + sa),
51                         input_iterator<const int*>(ib),
52                         input_iterator<const int*>(ib + 2)) ==
53                         (std::pair<input_iterator<const int*>,
54                                    input_iterator<const int*> >(
55                            input_iterator<const int*>(ia+2),
56                            input_iterator<const int*>(ib+2))));
57#endif
58}
59