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<class ForwardIterator, class Predicate>
13//     ForwardIterator
14//     partition_point(ForwardIterator first, ForwardIterator last, Predicate pred);
15
16#include <algorithm>
17#include <cassert>
18
19#include "test_iterators.h"
20
21struct is_odd
22{
23    bool operator()(const int& i) const {return i & 1;}
24};
25
26int main()
27{
28    {
29        const int ia[] = {2, 4, 6, 8, 10};
30        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
31                                    forward_iterator<const int*>(std::end(ia)),
32                                    is_odd()) == forward_iterator<const int*>(ia));
33    }
34    {
35        const int ia[] = {1, 2, 4, 6, 8};
36        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
37                                    forward_iterator<const int*>(std::end(ia)),
38                                    is_odd()) == forward_iterator<const int*>(ia + 1));
39    }
40    {
41        const int ia[] = {1, 3, 2, 4, 6};
42        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
43                                    forward_iterator<const int*>(std::end(ia)),
44                                    is_odd()) == forward_iterator<const int*>(ia + 2));
45    }
46    {
47        const int ia[] = {1, 3, 5, 2, 4, 6};
48        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
49                                    forward_iterator<const int*>(std::end(ia)),
50                                    is_odd()) == forward_iterator<const int*>(ia + 3));
51    }
52    {
53        const int ia[] = {1, 3, 5, 7, 2, 4};
54        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
55                                    forward_iterator<const int*>(std::end(ia)),
56                                    is_odd()) == forward_iterator<const int*>(ia + 4));
57    }
58    {
59        const int ia[] = {1, 3, 5, 7, 9, 2};
60        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
61                                    forward_iterator<const int*>(std::end(ia)),
62                                    is_odd()) == forward_iterator<const int*>(ia + 5));
63    }
64    {
65        const int ia[] = {1, 3, 5, 7, 9, 11};
66        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
67                                    forward_iterator<const int*>(std::end(ia)),
68                                    is_odd()) == forward_iterator<const int*>(ia + 6));
69    }
70    {
71        const int ia[] = {1, 3, 5, 2, 4, 6, 7};
72        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
73                                    forward_iterator<const int*>(std::begin(ia)),
74                                    is_odd()) == forward_iterator<const int*>(ia));
75    }
76}
77