89 lines
3.0 KiB
C++
89 lines
3.0 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <algorithm>
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// template<BidirectionalIterator InIter, BidirectionalIterator OutIter>
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// requires OutputIterator<OutIter, RvalueOf<InIter::reference>::type>
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// OutIter
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// move_backward(InIter first, InIter last, OutIter result);
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#include <algorithm>
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#include <cassert>
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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#include <memory>
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#endif
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#include "test_iterators.h"
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template <class InIter, class OutIter>
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void
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test()
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{
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const unsigned N = 1000;
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int ia[N];
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for (unsigned i = 0; i < N; ++i)
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ia[i] = i;
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int ib[N] = {0};
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OutIter r = std::move_backward(InIter(ia), InIter(ia+N), OutIter(ib+N));
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assert(base(r) == ib);
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for (unsigned i = 0; i < N; ++i)
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assert(ia[i] == ib[i]);
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}
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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template <class InIter, class OutIter>
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void
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test1()
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{
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const unsigned N = 100;
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std::unique_ptr<int> ia[N];
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for (unsigned i = 0; i < N; ++i)
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ia[i].reset(new int(i));
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std::unique_ptr<int> ib[N];
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OutIter r = std::move_backward(InIter(ia), InIter(ia+N), OutIter(ib+N));
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assert(base(r) == ib);
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for (unsigned i = 0; i < N; ++i)
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assert(*ib[i] == i);
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}
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#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
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int main()
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{
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test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
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test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
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test<bidirectional_iterator<const int*>, int*>();
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test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
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test<random_access_iterator<const int*>, random_access_iterator<int*> >();
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test<random_access_iterator<const int*>, int*>();
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test<const int*, bidirectional_iterator<int*> >();
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test<const int*, random_access_iterator<int*> >();
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test<const int*, int*>();
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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test1<bidirectional_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
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test1<bidirectional_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
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test1<bidirectional_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
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test1<random_access_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
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test1<random_access_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
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test1<random_access_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
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test1<std::unique_ptr<int>*, bidirectional_iterator<std::unique_ptr<int>*> >();
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test1<std::unique_ptr<int>*, random_access_iterator<std::unique_ptr<int>*> >();
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test1<std::unique_ptr<int>*, std::unique_ptr<int>*>();
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#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
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}
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