91 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// <algorithm>10 11// template<InputIterator InIter, OutputIterator<auto, InIter::reference> OutIter, class T>12// requires HasEqualTo<InIter::value_type, T>13// constexpr OutIter // constexpr after C++1714// remove_copy(InIter first, InIter last, OutIter result, const T& value);15 16#include <algorithm>17#include <cassert>18 19#include "test_macros.h"20#include "test_iterators.h"21 22#if TEST_STD_VER > 1723TEST_CONSTEXPR bool test_constexpr() {24 int ia[] = {1, 3, 5, 2, 5, 6};25 int ib[std::size(ia)] = {0};26 27 auto it = std::remove_copy(std::begin(ia), std::end(ia), std::begin(ib), 5);28 29 return std::distance(std::begin(ib), it) == static_cast<int>(std::size(ia) - 2) // we removed two elements30 && std::none_of(std::begin(ib), it, [](int a) {return a == 5;})31 && std::all_of (it, std::end(ib), [](int a) {return a == 0;})32 ;33 }34#endif35 36template <class InIter, class OutIter>37void38test()39{40 int ia[] = {0, 1, 2, 3, 4, 2, 3, 4, 2};41 const unsigned sa = sizeof(ia)/sizeof(ia[0]);42 int ib[sa];43 OutIter r = std::remove_copy(InIter(ia), InIter(ia+sa), OutIter(ib), 2);44 assert(base(r) == ib + sa-3);45 assert(ib[0] == 0);46 assert(ib[1] == 1);47 assert(ib[2] == 3);48 assert(ib[3] == 4);49 assert(ib[4] == 3);50 assert(ib[5] == 4);51}52 53int main(int, char**)54{55 test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();56 test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();57 test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();58 test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();59 test<cpp17_input_iterator<const int*>, int*>();60 61 test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();62 test<forward_iterator<const int*>, forward_iterator<int*> >();63 test<forward_iterator<const int*>, bidirectional_iterator<int*> >();64 test<forward_iterator<const int*>, random_access_iterator<int*> >();65 test<forward_iterator<const int*>, int*>();66 67 test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();68 test<bidirectional_iterator<const int*>, forward_iterator<int*> >();69 test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();70 test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();71 test<bidirectional_iterator<const int*>, int*>();72 73 test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();74 test<random_access_iterator<const int*>, forward_iterator<int*> >();75 test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();76 test<random_access_iterator<const int*>, random_access_iterator<int*> >();77 test<random_access_iterator<const int*>, int*>();78 79 test<const int*, cpp17_output_iterator<int*> >();80 test<const int*, forward_iterator<int*> >();81 test<const int*, bidirectional_iterator<int*> >();82 test<const int*, random_access_iterator<int*> >();83 test<const int*, int*>();84 85#if TEST_STD_VER > 1786 static_assert(test_constexpr());87#endif88 89 return 0;90}91