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      1 //===----------------------------------------------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is dual licensed under the MIT and the University of Illinois Open
      6 // Source Licenses. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 // <algorithm>
     11 
     12 // template<ForwardIterator Iter, class T>
     13 //   requires OutputIterator<Iter, RvalueOf<Iter::reference>::type>
     14 //         && HasEqualTo<Iter::value_type, T>
     15 //   Iter
     16 //   remove(Iter first, Iter last, const T& value);
     17 
     18 #include <algorithm>
     19 #include <cassert>
     20 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
     21 #include <memory>
     22 #endif
     23 
     24 #include "test_iterators.h"
     25 
     26 template <class Iter>
     27 void
     28 test()
     29 {
     30     int ia[] = {0, 1, 2, 3, 4, 2, 3, 4, 2};
     31     const unsigned sa = sizeof(ia)/sizeof(ia[0]);
     32     Iter r = std::remove(Iter(ia), Iter(ia+sa), 2);
     33     assert(base(r) == ia + sa-3);
     34     assert(ia[0] == 0);
     35     assert(ia[1] == 1);
     36     assert(ia[2] == 3);
     37     assert(ia[3] == 4);
     38     assert(ia[4] == 3);
     39     assert(ia[5] == 4);
     40 }
     41 
     42 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
     43 
     44 template <class Iter>
     45 void
     46 test1()
     47 {
     48     const unsigned sa = 9;
     49     std::unique_ptr<int> ia[sa];
     50     ia[0].reset(new int(0));
     51     ia[1].reset(new int(1));
     52     ia[3].reset(new int(3));
     53     ia[4].reset(new int(4));
     54     ia[6].reset(new int(3));
     55     ia[7].reset(new int(4));
     56     Iter r = std::remove(Iter(ia), Iter(ia+sa), std::unique_ptr<int>());
     57     assert(base(r) == ia + sa-3);
     58     assert(*ia[0] == 0);
     59     assert(*ia[1] == 1);
     60     assert(*ia[2] == 3);
     61     assert(*ia[3] == 4);
     62     assert(*ia[4] == 3);
     63     assert(*ia[5] == 4);
     64 }
     65 
     66 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
     67 
     68 int main()
     69 {
     70     test<forward_iterator<int*> >();
     71     test<bidirectional_iterator<int*> >();
     72     test<random_access_iterator<int*> >();
     73     test<int*>();
     74 
     75 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
     76 
     77     test1<forward_iterator<std::unique_ptr<int>*> >();
     78     test1<bidirectional_iterator<std::unique_ptr<int>*> >();
     79     test1<random_access_iterator<std::unique_ptr<int>*> >();
     80     test1<std::unique_ptr<int>*>();
     81 
     82 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
     83 }
     84