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 // <numeric>
11
12 // template<InputIterator InIter,
13 // OutputIterator<auto, const InIter::value_type&> OutIter,
14 // Callable<auto, const InIter::value_type&, InIter::reference> BinaryOperation>
15 // requires HasAssign<InIter::value_type, BinaryOperation::result_type>
16 // && Constructible<InIter::value_type, InIter::reference>
17 // && CopyConstructible<BinaryOperation>
18 // OutIter
19 // partial_sum(InIter first, InIter last, OutIter result, BinaryOperation binary_op);
20
21 #include <numeric>
22 #include <functional>
23 #include <cassert>
24
25 #include "test_iterators.h"
26
27 template <class InIter, class OutIter>
28 void
test()29 test()
30 {
31 int ia[] = {1, 2, 3, 4, 5};
32 int ir[] = {1, -1, -4, -8, -13};
33 const unsigned s = sizeof(ia) / sizeof(ia[0]);
34 int ib[s] = {0};
35 OutIter r = std::partial_sum(InIter(ia), InIter(ia+s), OutIter(ib), std::minus<int>());
36 assert(base(r) == ib + s);
37 for (unsigned i = 0; i < s; ++i)
38 assert(ib[i] == ir[i]);
39 }
40
main()41 int main()
42 {
43 test<input_iterator<const int*>, output_iterator<int*> >();
44 test<input_iterator<const int*>, forward_iterator<int*> >();
45 test<input_iterator<const int*>, bidirectional_iterator<int*> >();
46 test<input_iterator<const int*>, random_access_iterator<int*> >();
47 test<input_iterator<const int*>, int*>();
48
49 test<forward_iterator<const int*>, output_iterator<int*> >();
50 test<forward_iterator<const int*>, forward_iterator<int*> >();
51 test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
52 test<forward_iterator<const int*>, random_access_iterator<int*> >();
53 test<forward_iterator<const int*>, int*>();
54
55 test<bidirectional_iterator<const int*>, output_iterator<int*> >();
56 test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
57 test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
58 test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
59 test<bidirectional_iterator<const int*>, int*>();
60
61 test<random_access_iterator<const int*>, output_iterator<int*> >();
62 test<random_access_iterator<const int*>, forward_iterator<int*> >();
63 test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
64 test<random_access_iterator<const int*>, random_access_iterator<int*> >();
65 test<random_access_iterator<const int*>, int*>();
66
67 test<const int*, output_iterator<int*> >();
68 test<const int*, forward_iterator<int*> >();
69 test<const int*, bidirectional_iterator<int*> >();
70 test<const int*, random_access_iterator<int*> >();
71 test<const int*, int*>();
72 }
73