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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <algorithm>
// template<InputIterator InIter, OutputIterator<auto, InIter::reference> OutIter,
// Predicate<auto, InIter::value_type> Pred>
// requires CopyConstructible<Pred>
// constexpr OutIter // constexpr after C++17
// remove_copy_if(InIter first, InIter last, OutIter result, Pred pred);
#include <algorithm>
#include <functional>
#include <cassert>
#include "test_macros.h"
#include "test_iterators.h"
TEST_CONSTEXPR bool equalToTwo(int v) { return v == 2; }
#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_if(std::begin(ia), std::end(ia), std::begin(ib), equalToTwo);
return std::distance(std::begin(ib), it) == (std::size(ia) - 1) // we removed one element
&& std::none_of(std::begin(ib), it, equalToTwo)
&& 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_if(InIter(ia), InIter(ia+sa),
OutIter(ib), equalToTwo);
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()
{
test<input_iterator<const int*>, output_iterator<int*> >();
test<input_iterator<const int*>, forward_iterator<int*> >();
test<input_iterator<const int*>, bidirectional_iterator<int*> >();
test<input_iterator<const int*>, random_access_iterator<int*> >();
test<input_iterator<const int*>, int*>();
test<forward_iterator<const int*>, 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*>, 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*>, 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*, 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
}
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