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Another batch of P0202 constepr algirithms. remove/remove_if/remove_copy/remove_copy_if/reverse_copy, and tests (commented out) for rotate_copy, because that depends on std::copy

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@323152 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2018-01-22 21:43:04 +00:00
parent a15161a030
commit 63be4189d8
7 changed files with 127 additions and 18 deletions
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23
test/std/algorithms/alg.modifying.operations/alg.rotate/rotate_copy.pass.cpp
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@@ -10,14 +10,31 @@
// <algorithm>
// template<ForwardIterator InIter, OutputIterator<auto, InIter::reference> OutIter>
// OutIter
// constexpr OutIter // constexpr after C++17
// rotate_copy(InIter first, InIter middle, InIter last, OutIter result);
#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};
//
// const size_t N = 2;
// const auto middle = std::begin(ia) + N;
// auto it = std::rotate_copy(std::begin(ia), middle, std::end(ia), std::begin(ib));
//
// return std::distance(std::begin(ib), it) == std::size(ia)
// && std::equal (std::begin(ia), middle, std::begin(ib) + std::size(ia) - N)
// && std::equal (middle, std::end(ia), std::begin(ib))
// ;
// }
// #endif
template <class InIter, class OutIter>
void
test()
@@ -131,4 +148,8 @@ int main()
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
}