//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <algorithm>
// template<InputIterator InIter, OutputIterator<auto, InIter::reference> OutIter, class T>
// requires HasEqualTo<InIter::value_type, T>
// constexpr OutIter // constexpr after C++17
// remove_copy(InIter first, InIter last, OutIter result, const T& value);
#include <algorithm>
#include <cassert>
#include "test_macros.h"
#include "test_iterators.h"
#if TEST_STD_VER > 17
TEST_CONSTEXPR bool test_constexpr() {
int ia[] = {1, 3, 5, 2, 5, 6};
int ib[std::size(ia)] = {0};
auto it = std::remove_copy(std::begin(ia), std::end(ia), std::begin(ib), 5);
return std::distance(std::begin(ib), it) == static_cast<int>(std::size(ia) - 2) // we removed two elements
&& std::none_of(std::begin(ib), it, [](int a) {return a == 5;})
&& std::all_of (it, std::end(ib), [](int a) {return a == 0;})
;
}
#endif
template <class InIter, class OutIter>
void
test()
{
int ia[] = {0, 1, 2, 3, 4, 2, 3, 4, 2};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
int ib[sa];
OutIter r = std::remove_copy(InIter(ia), InIter(ia+sa), OutIter(ib), 2);
assert(base(r) == ib + sa-3);
assert(ib[0] == 0);
assert(ib[1] == 1);
assert(ib[2] == 3);
assert(ib[3] == 4);
assert(ib[4] == 3);
assert(ib[5] == 4);
}
int main(int, char**)
{
test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
test<cpp17_input_iterator<const int*>, int*>();
test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
test<forward_iterator<const int*>, forward_iterator<int*> >();
test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
test<forward_iterator<const int*>, random_access_iterator<int*> >();
test<forward_iterator<const int*>, int*>();
test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
test<bidirectional_iterator<const int*>, int*>();
test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
test<random_access_iterator<const int*>, forward_iterator<int*> >();
test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
test<random_access_iterator<const int*>, random_access_iterator<int*> >();
test<random_access_iterator<const int*>, int*>();
test<const int*, cpp17_output_iterator<int*> >();
test<const int*, forward_iterator<int*> >();
test<const int*, bidirectional_iterator<int*> >();
test<const int*, random_access_iterator<int*> >();
test<const int*, int*>();
#if TEST_STD_VER > 17
static_assert(test_constexpr());
#endif
return 0;
}