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 // Predicate<auto, Iter1::value_type, Iter2::value_type> Pred>
14 // requires CopyConstructible<Pred>
15 // pair<Iter1, Iter2>
16 // mismatch(Iter1 first1, Iter1 last1, Iter2 first2, Pred pred);
17
18 #include <algorithm>
19 #include <functional>
20 #include <cassert>
21
22 #include "test_iterators.h"
23
24 #if _LIBCPP_STD_VER > 11
25 #define HAS_FOUR_ITERATOR_VERSION
26 #endif
27
28
main()29 int main()
30 {
31 int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
32 const unsigned sa = sizeof(ia)/sizeof(ia[0]);
33 int ib[] = {0, 1, 2, 3, 0, 1, 2, 3};
34 assert(std::mismatch(input_iterator<const int*>(ia),
35 input_iterator<const int*>(ia + sa),
36 input_iterator<const int*>(ib),
37 std::equal_to<int>()) ==
38 (std::pair<input_iterator<const int*>,
39 input_iterator<const int*> >(
40 input_iterator<const int*>(ia+3),
41 input_iterator<const int*>(ib+3))));
42 #ifdef HAS_FOUR_ITERATOR_VERSION
43 assert(std::mismatch(input_iterator<const int*>(ia),
44 input_iterator<const int*>(ia + sa),
45 input_iterator<const int*>(ib),
46 input_iterator<const int*>(ib + sa),
47 std::equal_to<int>()) ==
48 (std::pair<input_iterator<const int*>,
49 input_iterator<const int*> >(
50 input_iterator<const int*>(ia+3),
51 input_iterator<const int*>(ib+3))));
52 #endif
53
54 assert(std::mismatch(ia, ia + sa, ib, std::equal_to<int>()) ==
55 (std::pair<int*,int*>(ia+3,ib+3)));
56 #ifdef HAS_FOUR_ITERATOR_VERSION
57 assert(std::mismatch(ia, ia + sa, ib, ib + sa, std::equal_to<int>()) ==
58 (std::pair<int*,int*>(ia+3,ib+3)));
59 assert(std::mismatch(ia, ia + sa, ib, ib + 2, std::equal_to<int>()) ==
60 (std::pair<int*,int*>(ia+2,ib+2)));
61 #endif
62 }
63