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, class T>
13 // requires HasEqualTo<InIter::value_type, T>
14 // constexpr OutIter // constexpr after C++17
15 // remove_copy(InIter first, InIter last, OutIter result, const T& value);
16
17 #include <algorithm>
18 #include <cassert>
19
20 #include "test_macros.h"
21 #include "test_iterators.h"
22
23 #if TEST_STD_VER > 17
test_constexpr()24 TEST_CONSTEXPR bool test_constexpr() {
25 int ia[] = {1, 3, 5, 2, 5, 6};
26 int ib[std::size(ia)] = {0};
27
28 auto it = std::remove_copy(std::begin(ia), std::end(ia), std::begin(ib), 5);
29
30 return std::distance(std::begin(ib), it) == (std::size(ia) - 2) // we removed two elements
31 && std::none_of(std::begin(ib), it, [](int a) {return a == 5;})
32 && std::all_of (it, std::end(ib), [](int a) {return a == 0;})
33 ;
34 }
35 #endif
36
37 template <class InIter, class OutIter>
38 void
test()39 test()
40 {
41 int ia[] = {0, 1, 2, 3, 4, 2, 3, 4, 2};
42 const unsigned sa = sizeof(ia)/sizeof(ia[0]);
43 int ib[sa];
44 OutIter r = std::remove_copy(InIter(ia), InIter(ia+sa), OutIter(ib), 2);
45 assert(base(r) == ib + sa-3);
46 assert(ib[0] == 0);
47 assert(ib[1] == 1);
48 assert(ib[2] == 3);
49 assert(ib[3] == 4);
50 assert(ib[4] == 3);
51 assert(ib[5] == 4);
52 }
53
main()54 int main()
55 {
56 test<input_iterator<const int*>, output_iterator<int*> >();
57 test<input_iterator<const int*>, forward_iterator<int*> >();
58 test<input_iterator<const int*>, bidirectional_iterator<int*> >();
59 test<input_iterator<const int*>, random_access_iterator<int*> >();
60 test<input_iterator<const int*>, int*>();
61
62 test<forward_iterator<const int*>, output_iterator<int*> >();
63 test<forward_iterator<const int*>, forward_iterator<int*> >();
64 test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
65 test<forward_iterator<const int*>, random_access_iterator<int*> >();
66 test<forward_iterator<const int*>, int*>();
67
68 test<bidirectional_iterator<const int*>, output_iterator<int*> >();
69 test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
70 test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
71 test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
72 test<bidirectional_iterator<const int*>, int*>();
73
74 test<random_access_iterator<const int*>, output_iterator<int*> >();
75 test<random_access_iterator<const int*>, forward_iterator<int*> >();
76 test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
77 test<random_access_iterator<const int*>, random_access_iterator<int*> >();
78 test<random_access_iterator<const int*>, int*>();
79
80 test<const int*, output_iterator<int*> >();
81 test<const int*, forward_iterator<int*> >();
82 test<const int*, bidirectional_iterator<int*> >();
83 test<const int*, random_access_iterator<int*> >();
84 test<const int*, int*>();
85
86 #if TEST_STD_VER > 17
87 static_assert(test_constexpr());
88 #endif
89 }
90