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 23template <class Iter, class T> 24void 25test(Iter first, Iter last, T init, T x) 26{ 27 assert(std::accumulate(first, last, init) == x); 28} 29 30template <class Iter> 31void 32test() 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 46int 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