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 
main()26 int 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