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, CopyConstructible Compare>
13 // requires Predicate<Compare, Iter1::value_type, Iter2::value_type>
14 // && Predicate<Compare, Iter2::value_type, Iter1::value_type>
15 // bool
16 // lexicographical_compare(Iter1 first1, Iter1 last1,
17 // Iter2 first2, Iter2 last2, Compare comp);
18
19 #include <algorithm>
20 #include <functional>
21 #include <cassert>
22
23 #include "test_iterators.h"
24
25 template <class Iter1, class Iter2>
26 void
test()27 test()
28 {
29 int ia[] = {1, 2, 3, 4};
30 const unsigned sa = sizeof(ia)/sizeof(ia[0]);
31 int ib[] = {1, 2, 3};
32 typedef std::greater<int> C;
33 C c;
34 assert(!std::lexicographical_compare(Iter1(ia), Iter1(ia+sa), Iter2(ib), Iter2(ib+2), c));
35 assert( std::lexicographical_compare(Iter1(ib), Iter1(ib+2), Iter2(ia), Iter2(ia+sa), c));
36 assert(!std::lexicographical_compare(Iter1(ia), Iter1(ia+sa), Iter2(ib), Iter2(ib+3), c));
37 assert( std::lexicographical_compare(Iter1(ib), Iter1(ib+3), Iter2(ia), Iter2(ia+sa), c));
38 assert(!std::lexicographical_compare(Iter1(ia), Iter1(ia+sa), Iter2(ib+1), Iter2(ib+3), c));
39 assert( std::lexicographical_compare(Iter1(ib+1), Iter1(ib+3), Iter2(ia), Iter2(ia+sa), c));
40 }
41
main()42 int main()
43 {
44 test<input_iterator<const int*>, input_iterator<const int*> >();
45 test<input_iterator<const int*>, forward_iterator<const int*> >();
46 test<input_iterator<const int*>, bidirectional_iterator<const int*> >();
47 test<input_iterator<const int*>, random_access_iterator<const int*> >();
48 test<input_iterator<const int*>, const int*>();
49
50 test<forward_iterator<const int*>, input_iterator<const int*> >();
51 test<forward_iterator<const int*>, forward_iterator<const int*> >();
52 test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
53 test<forward_iterator<const int*>, random_access_iterator<const int*> >();
54 test<forward_iterator<const int*>, const int*>();
55
56 test<bidirectional_iterator<const int*>, input_iterator<const int*> >();
57 test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
58 test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
59 test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
60 test<bidirectional_iterator<const int*>, const int*>();
61
62 test<random_access_iterator<const int*>, input_iterator<const int*> >();
63 test<random_access_iterator<const int*>, forward_iterator<const int*> >();
64 test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
65 test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
66 test<random_access_iterator<const int*>, const int*>();
67
68 test<const int*, input_iterator<const int*> >();
69 test<const int*, forward_iterator<const int*> >();
70 test<const int*, bidirectional_iterator<const int*> >();
71 test<const int*, random_access_iterator<const int*> >();
72 test<const int*, const int*>();
73 }
74