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 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 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 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
