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<InputIterator InIter, OutputIterator<auto, InIter::reference> OutIter, 13 // Predicate<auto, InIter::value_type> Pred> 14 // requires CopyConstructible<Pred> 15 // OutIter 16 // copy_if(InIter first, InIter last, OutIter result, Pred pred); 17 18 #include <algorithm> 19 #include <cassert> 20 21 #include "test_iterators.h" 22 23 struct Pred 24 { 25 bool operator()(int i) {return i % 3 == 0;} 26 }; 27 28 template <class InIter, class OutIter> 29 void 30 test() 31 { 32 const unsigned N = 1000; 33 int ia[N]; 34 for (unsigned i = 0; i < N; ++i) 35 ia[i] = i; 36 int ib[N] = {0}; 37 38 OutIter r = std::copy_if(InIter(ia), InIter(ia+N), OutIter(ib), Pred()); 39 assert(base(r) == ib+N/3+1); 40 for (unsigned i = 0; i < N/3+1; ++i) 41 assert(ib[i] % 3 == 0); 42 } 43 44 int main() 45 { 46 test<input_iterator<const int*>, output_iterator<int*> >(); 47 test<input_iterator<const int*>, input_iterator<int*> >(); 48 test<input_iterator<const int*>, forward_iterator<int*> >(); 49 test<input_iterator<const int*>, bidirectional_iterator<int*> >(); 50 test<input_iterator<const int*>, random_access_iterator<int*> >(); 51 test<input_iterator<const int*>, int*>(); 52 53 test<forward_iterator<const int*>, output_iterator<int*> >(); 54 test<forward_iterator<const int*>, input_iterator<int*> >(); 55 test<forward_iterator<const int*>, forward_iterator<int*> >(); 56 test<forward_iterator<const int*>, bidirectional_iterator<int*> >(); 57 test<forward_iterator<const int*>, random_access_iterator<int*> >(); 58 test<forward_iterator<const int*>, int*>(); 59 60 test<bidirectional_iterator<const int*>, output_iterator<int*> >(); 61 test<bidirectional_iterator<const int*>, input_iterator<int*> >(); 62 test<bidirectional_iterator<const int*>, forward_iterator<int*> >(); 63 test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >(); 64 test<bidirectional_iterator<const int*>, random_access_iterator<int*> >(); 65 test<bidirectional_iterator<const int*>, int*>(); 66 67 test<random_access_iterator<const int*>, output_iterator<int*> >(); 68 test<random_access_iterator<const int*>, input_iterator<int*> >(); 69 test<random_access_iterator<const int*>, forward_iterator<int*> >(); 70 test<random_access_iterator<const int*>, bidirectional_iterator<int*> >(); 71 test<random_access_iterator<const int*>, random_access_iterator<int*> >(); 72 test<random_access_iterator<const int*>, int*>(); 73 74 test<const int*, output_iterator<int*> >(); 75 test<const int*, input_iterator<int*> >(); 76 test<const int*, forward_iterator<int*> >(); 77 test<const int*, bidirectional_iterator<int*> >(); 78 test<const int*, random_access_iterator<int*> >(); 79 test<const int*, int*>(); 80 } 81
