forked from OSchip/llvm-project
135 lines
4.2 KiB
C++
135 lines
4.2 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<ForwardIterator InIter, OutputIterator<auto, InIter::reference> OutIter>
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// OutIter
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// rotate_copy(InIter first, InIter middle, InIter last, OutIter result);
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#include <algorithm>
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#include <cassert>
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#include "../../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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int ia[] = {0, 1, 2, 3};
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const unsigned sa = sizeof(ia)/sizeof(ia[0]);
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int ib[sa] = {0};
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OutIter r = std::rotate_copy(InIter(ia), InIter(ia), InIter(ia), OutIter(ib));
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assert(base(r) == ib);
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r = std::rotate_copy(InIter(ia), InIter(ia), InIter(ia+1), OutIter(ib));
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assert(base(r) == ib+1);
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assert(ib[0] == 0);
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r = std::rotate_copy(InIter(ia), InIter(ia+1), InIter(ia+1), OutIter(ib));
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assert(base(r) == ib+1);
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assert(ib[0] == 0);
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r = std::rotate_copy(InIter(ia), InIter(ia), InIter(ia+2), OutIter(ib));
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assert(base(r) == ib+2);
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assert(ib[0] == 0);
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assert(ib[1] == 1);
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r = std::rotate_copy(InIter(ia), InIter(ia+1), InIter(ia+2), OutIter(ib));
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assert(base(r) == ib+2);
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assert(ib[0] == 1);
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assert(ib[1] == 0);
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r = std::rotate_copy(InIter(ia), InIter(ia+2), InIter(ia+2), OutIter(ib));
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assert(base(r) == ib+2);
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assert(ib[0] == 0);
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assert(ib[1] == 1);
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r = std::rotate_copy(InIter(ia), InIter(ia), InIter(ia+3), OutIter(ib));
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assert(base(r) == ib+3);
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assert(ib[0] == 0);
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assert(ib[1] == 1);
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assert(ib[2] == 2);
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r = std::rotate_copy(InIter(ia), InIter(ia+1), InIter(ia+3), OutIter(ib));
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assert(base(r) == ib+3);
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assert(ib[0] == 1);
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assert(ib[1] == 2);
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assert(ib[2] == 0);
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r = std::rotate_copy(InIter(ia), InIter(ia+2), InIter(ia+3), OutIter(ib));
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assert(base(r) == ib+3);
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assert(ib[0] == 2);
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assert(ib[1] == 0);
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assert(ib[2] == 1);
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r = std::rotate_copy(InIter(ia), InIter(ia+3), InIter(ia+3), OutIter(ib));
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assert(base(r) == ib+3);
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assert(ib[0] == 0);
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assert(ib[1] == 1);
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assert(ib[2] == 2);
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r = std::rotate_copy(InIter(ia), InIter(ia), InIter(ia+4), OutIter(ib));
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assert(base(r) == ib+4);
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assert(ib[0] == 0);
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assert(ib[1] == 1);
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assert(ib[2] == 2);
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assert(ib[3] == 3);
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r = std::rotate_copy(InIter(ia), InIter(ia+1), InIter(ia+4), OutIter(ib));
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assert(base(r) == ib+4);
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assert(ib[0] == 1);
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assert(ib[1] == 2);
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assert(ib[2] == 3);
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assert(ib[3] == 0);
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r = std::rotate_copy(InIter(ia), InIter(ia+2), InIter(ia+4), OutIter(ib));
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assert(base(r) == ib+4);
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assert(ib[0] == 2);
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assert(ib[1] == 3);
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assert(ib[2] == 0);
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assert(ib[3] == 1);
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r = std::rotate_copy(InIter(ia), InIter(ia+3), InIter(ia+4), OutIter(ib));
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assert(base(r) == ib+4);
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assert(ib[0] == 3);
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assert(ib[1] == 0);
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assert(ib[2] == 1);
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assert(ib[3] == 2);
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r = std::rotate_copy(InIter(ia), InIter(ia+4), InIter(ia+4), OutIter(ib));
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assert(base(r) == ib+4);
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assert(ib[0] == 0);
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assert(ib[1] == 1);
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assert(ib[2] == 2);
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assert(ib[3] == 3);
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}
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int main()
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{
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test<bidirectional_iterator<const int*>, output_iterator<int*> >();
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test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
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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*>, output_iterator<int*> >();
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test<random_access_iterator<const int*>, forward_iterator<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*, output_iterator<int*> >();
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test<const int*, forward_iterator<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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}
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