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 InIter, OutputIterator<auto, InIter::reference> OutIter,
13 // Predicate<auto, InIter::value_type> Pred>
14 // requires CopyConstructible<Pred>
15 // OutIter
16 // copy_if(InIter first, InIter last, OutIter result, Pred pred);
17
18 #include <algorithm>
19 #include <cassert>
20
21 #include "test_iterators.h"
22
23 struct Pred
24 {
operator ()Pred25 bool operator()(int i) {return i % 3 == 0;}
26 };
27
28 template <class InIter, class OutIter>
29 void
test()30 test()
31 {
32 const unsigned N = 1000;
33 int ia[N];
34 for (unsigned i = 0; i < N; ++i)
35 ia[i] = i;
36 int ib[N] = {0};
37
38 OutIter r = std::copy_if(InIter(ia), InIter(ia+N), OutIter(ib), Pred());
39 assert(base(r) == ib+N/3+1);
40 for (unsigned i = 0; i < N/3+1; ++i)
41 assert(ib[i] % 3 == 0);
42 }
43
main()44 int main()
45 {
46 test<input_iterator<const int*>, output_iterator<int*> >();
47 test<input_iterator<const int*>, input_iterator<int*> >();
48 test<input_iterator<const int*>, forward_iterator<int*> >();
49 test<input_iterator<const int*>, bidirectional_iterator<int*> >();
50 test<input_iterator<const int*>, random_access_iterator<int*> >();
51 test<input_iterator<const int*>, int*>();
52
53 test<forward_iterator<const int*>, output_iterator<int*> >();
54 test<forward_iterator<const int*>, input_iterator<int*> >();
55 test<forward_iterator<const int*>, forward_iterator<int*> >();
56 test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
57 test<forward_iterator<const int*>, random_access_iterator<int*> >();
58 test<forward_iterator<const int*>, int*>();
59
60 test<bidirectional_iterator<const int*>, output_iterator<int*> >();
61 test<bidirectional_iterator<const int*>, input_iterator<int*> >();
62 test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
63 test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
64 test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
65 test<bidirectional_iterator<const int*>, int*>();
66
67 test<random_access_iterator<const int*>, output_iterator<int*> >();
68 test<random_access_iterator<const int*>, input_iterator<int*> >();
69 test<random_access_iterator<const int*>, forward_iterator<int*> >();
70 test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
71 test<random_access_iterator<const int*>, random_access_iterator<int*> >();
72 test<random_access_iterator<const int*>, int*>();
73
74 test<const int*, output_iterator<int*> >();
75 test<const int*, input_iterator<int*> >();
76 test<const int*, forward_iterator<int*> >();
77 test<const int*, bidirectional_iterator<int*> >();
78 test<const int*, random_access_iterator<int*> >();
79 test<const int*, int*>();
80 }
81