• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 Iter, MoveConstructible T>
13 //   requires HasPlus<T, Iter::reference>
14 //         && HasAssign<T, HasPlus<T, Iter::reference>::result_type>
15 //   T
16 //   accumulate(Iter first, Iter last, T init);
17 
18 #include <numeric>
19 #include <cassert>
20 
21 #include "test_iterators.h"
22 
23 template <class Iter, class T>
24 void
test(Iter first,Iter last,T init,T x)25 test(Iter first, Iter last, T init, T x)
26 {
27     assert(std::accumulate(first, last, init) == x);
28 }
29 
30 template <class Iter>
31 void
test()32 test()
33 {
34     int ia[] = {1, 2, 3, 4, 5, 6};
35     unsigned sa = sizeof(ia) / sizeof(ia[0]);
36     test(Iter(ia), Iter(ia), 0, 0);
37     test(Iter(ia), Iter(ia), 10, 10);
38     test(Iter(ia), Iter(ia+1), 0, 1);
39     test(Iter(ia), Iter(ia+1), 10, 11);
40     test(Iter(ia), Iter(ia+2), 0, 3);
41     test(Iter(ia), Iter(ia+2), 10, 13);
42     test(Iter(ia), Iter(ia+sa), 0, 21);
43     test(Iter(ia), Iter(ia+sa), 10, 31);
44 }
45 
main()46 int main()
47 {
48     test<input_iterator<const int*> >();
49     test<forward_iterator<const int*> >();
50     test<bidirectional_iterator<const int*> >();
51     test<random_access_iterator<const int*> >();
52     test<const int*>();
53 }
54