1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <numeric> 10 11 // template<InputIterator InIter, 12 // OutputIterator<auto, const InIter::value_type&> OutIter, 13 // Callable<auto, const InIter::value_type&, InIter::reference> BinaryOperation> 14 // requires HasAssign<InIter::value_type, BinaryOperation::result_type> 15 // && Constructible<InIter::value_type, InIter::reference> 16 // && CopyConstructible<BinaryOperation> 17 // OutIter 18 // partial_sum(InIter first, InIter last, OutIter result, BinaryOperation binary_op); 19 20 #include <numeric> 21 #include <functional> 22 #include <cassert> 23 24 #include "test_iterators.h" 25 26 template <class InIter, class OutIter> 27 void 28 test() 29 { 30 int ia[] = {1, 2, 3, 4, 5}; 31 int ir[] = {1, -1, -4, -8, -13}; 32 const unsigned s = sizeof(ia) / sizeof(ia[0]); 33 int ib[s] = {0}; 34 OutIter r = std::partial_sum(InIter(ia), InIter(ia+s), OutIter(ib), std::minus<int>()); 35 assert(base(r) == ib + s); 36 for (unsigned i = 0; i < s; ++i) 37 assert(ib[i] == ir[i]); 38 } 39 40 int main(int, char**) 41 { 42 test<input_iterator<const int*>, output_iterator<int*> >(); 43 test<input_iterator<const int*>, forward_iterator<int*> >(); 44 test<input_iterator<const int*>, bidirectional_iterator<int*> >(); 45 test<input_iterator<const int*>, random_access_iterator<int*> >(); 46 test<input_iterator<const int*>, int*>(); 47 48 test<forward_iterator<const int*>, output_iterator<int*> >(); 49 test<forward_iterator<const int*>, forward_iterator<int*> >(); 50 test<forward_iterator<const int*>, bidirectional_iterator<int*> >(); 51 test<forward_iterator<const int*>, random_access_iterator<int*> >(); 52 test<forward_iterator<const int*>, int*>(); 53 54 test<bidirectional_iterator<const int*>, output_iterator<int*> >(); 55 test<bidirectional_iterator<const int*>, forward_iterator<int*> >(); 56 test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >(); 57 test<bidirectional_iterator<const int*>, random_access_iterator<int*> >(); 58 test<bidirectional_iterator<const int*>, int*>(); 59 60 test<random_access_iterator<const int*>, output_iterator<int*> >(); 61 test<random_access_iterator<const int*>, forward_iterator<int*> >(); 62 test<random_access_iterator<const int*>, bidirectional_iterator<int*> >(); 63 test<random_access_iterator<const int*>, random_access_iterator<int*> >(); 64 test<random_access_iterator<const int*>, int*>(); 65 66 test<const int*, output_iterator<int*> >(); 67 test<const int*, forward_iterator<int*> >(); 68 test<const int*, bidirectional_iterator<int*> >(); 69 test<const int*, random_access_iterator<int*> >(); 70 test<const int*, int*>(); 71 72 return 0; 73 } 74