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 // UNSUPPORTED: clang-8 10 11 // <algorithm> 12 13 // template<InputIterator InIter, OutputIterator<auto, InIter::reference> OutIter> 14 // constexpr OutIter // constexpr after C++17 15 // copy(InIter first, InIter last, OutIter result); 16 17 #include <algorithm> 18 #include <cassert> 19 20 #include "test_macros.h" 21 #include "test_iterators.h" 22 23 template <class InIter, class OutIter> 24 TEST_CONSTEXPR_CXX20 void 25 test_copy() 26 { 27 const unsigned N = 1000; 28 int ia[N] = {}; 29 for (unsigned i = 0; i < N; ++i) 30 ia[i] = i; 31 int ib[N] = {0}; 32 33 OutIter r = std::copy(InIter(ia), InIter(ia+N), OutIter(ib)); 34 assert(base(r) == ib+N); 35 for (unsigned i = 0; i < N; ++i) 36 assert(ia[i] == ib[i]); 37 } 38 39 TEST_CONSTEXPR_CXX20 bool 40 test() 41 { 42 test_copy<input_iterator<const int*>, output_iterator<int*> >(); 43 test_copy<input_iterator<const int*>, input_iterator<int*> >(); 44 test_copy<input_iterator<const int*>, forward_iterator<int*> >(); 45 test_copy<input_iterator<const int*>, bidirectional_iterator<int*> >(); 46 test_copy<input_iterator<const int*>, random_access_iterator<int*> >(); 47 test_copy<input_iterator<const int*>, int*>(); 48 49 test_copy<forward_iterator<const int*>, output_iterator<int*> >(); 50 test_copy<forward_iterator<const int*>, input_iterator<int*> >(); 51 test_copy<forward_iterator<const int*>, forward_iterator<int*> >(); 52 test_copy<forward_iterator<const int*>, bidirectional_iterator<int*> >(); 53 test_copy<forward_iterator<const int*>, random_access_iterator<int*> >(); 54 test_copy<forward_iterator<const int*>, int*>(); 55 56 test_copy<bidirectional_iterator<const int*>, output_iterator<int*> >(); 57 test_copy<bidirectional_iterator<const int*>, input_iterator<int*> >(); 58 test_copy<bidirectional_iterator<const int*>, forward_iterator<int*> >(); 59 test_copy<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >(); 60 test_copy<bidirectional_iterator<const int*>, random_access_iterator<int*> >(); 61 test_copy<bidirectional_iterator<const int*>, int*>(); 62 63 test_copy<random_access_iterator<const int*>, output_iterator<int*> >(); 64 test_copy<random_access_iterator<const int*>, input_iterator<int*> >(); 65 test_copy<random_access_iterator<const int*>, forward_iterator<int*> >(); 66 test_copy<random_access_iterator<const int*>, bidirectional_iterator<int*> >(); 67 test_copy<random_access_iterator<const int*>, random_access_iterator<int*> >(); 68 test_copy<random_access_iterator<const int*>, int*>(); 69 70 test_copy<const int*, output_iterator<int*> >(); 71 test_copy<const int*, input_iterator<int*> >(); 72 test_copy<const int*, forward_iterator<int*> >(); 73 test_copy<const int*, bidirectional_iterator<int*> >(); 74 test_copy<const int*, random_access_iterator<int*> >(); 75 test_copy<const int*, int*>(); 76 77 return true; 78 } 79 80 int main(int, char**) 81 { 82 test(); 83 84 #if TEST_STD_VER > 17 85 static_assert(test()); 86 #endif 87 88 return 0; 89 } 90