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 Iter1, InputIterator Iter2> 13 // requires HasLess<Iter1::value_type, Iter2::value_type> 14 // && HasLess<Iter2::value_type, Iter1::value_type> 15 // constexpr bool // constexpr after C++17 16 // includes(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2); 17 18 #include <algorithm> 19 #include <cassert> 20 21 #include "test_macros.h" 22 #include "test_iterators.h" 23 24 #if TEST_STD_VER > 17 25 TEST_CONSTEXPR bool test_constexpr() { 26 int ia[] = {1, 2, 2, 3, 3, 3, 4, 4, 4, 4}; 27 int ib[] = {2, 4}; 28 int ic[] = {3, 3, 3, 3}; 29 30 return std::includes(std::begin(ia), std::end(ia), std::begin(ib), std::end(ib)) 31 && !std::includes(std::begin(ia), std::end(ia), std::begin(ic), std::end(ic)) 32 ; 33 } 34 #endif 35 36 template <class Iter1, class Iter2> 37 void 38 test() 39 { 40 int ia[] = {1, 2, 2, 3, 3, 3, 4, 4, 4, 4}; 41 const unsigned sa = sizeof(ia)/sizeof(ia[0]); 42 int ib[] = {2, 4}; 43 const unsigned sb = sizeof(ib)/sizeof(ib[0]); 44 int ic[] = {1, 2}; 45 const unsigned sc = sizeof(ic)/sizeof(ic[0]); ((void)sc); 46 int id[] = {3, 3, 3, 3}; 47 const unsigned sd = sizeof(id)/sizeof(id[0]); ((void)sd); 48 49 assert(std::includes(Iter1(ia), Iter1(ia), Iter2(ib), Iter2(ib))); 50 assert(!std::includes(Iter1(ia), Iter1(ia), Iter2(ib), Iter2(ib+1))); 51 assert(std::includes(Iter1(ia), Iter1(ia+1), Iter2(ib), Iter2(ib))); 52 assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia+sa))); 53 54 assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(ib), Iter2(ib+sb))); 55 assert(!std::includes(Iter1(ib), Iter1(ib+sb), Iter2(ia), Iter2(ia+sa))); 56 57 assert(std::includes(Iter1(ia), Iter1(ia+2), Iter2(ic), Iter2(ic+2))); 58 assert(!std::includes(Iter1(ia), Iter1(ia+2), Iter2(ib), Iter2(ib+2))); 59 60 assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+1))); 61 assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+2))); 62 assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+3))); 63 assert(!std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+4))); 64 } 65 66 int main() 67 { 68 test<input_iterator<const int*>, input_iterator<const int*> >(); 69 test<input_iterator<const int*>, forward_iterator<const int*> >(); 70 test<input_iterator<const int*>, bidirectional_iterator<const int*> >(); 71 test<input_iterator<const int*>, random_access_iterator<const int*> >(); 72 test<input_iterator<const int*>, const int*>(); 73 74 test<forward_iterator<const int*>, input_iterator<const int*> >(); 75 test<forward_iterator<const int*>, forward_iterator<const int*> >(); 76 test<forward_iterator<const int*>, bidirectional_iterator<const int*> >(); 77 test<forward_iterator<const int*>, random_access_iterator<const int*> >(); 78 test<forward_iterator<const int*>, const int*>(); 79 80 test<bidirectional_iterator<const int*>, input_iterator<const int*> >(); 81 test<bidirectional_iterator<const int*>, forward_iterator<const int*> >(); 82 test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >(); 83 test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >(); 84 test<bidirectional_iterator<const int*>, const int*>(); 85 86 test<random_access_iterator<const int*>, input_iterator<const int*> >(); 87 test<random_access_iterator<const int*>, forward_iterator<const int*> >(); 88 test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >(); 89 test<random_access_iterator<const int*>, random_access_iterator<const int*> >(); 90 test<random_access_iterator<const int*>, const int*>(); 91 92 test<const int*, input_iterator<const int*> >(); 93 test<const int*, forward_iterator<const int*> >(); 94 test<const int*, bidirectional_iterator<const int*> >(); 95 test<const int*, random_access_iterator<const int*> >(); 96 test<const int*, const int*>(); 97 98 #if TEST_STD_VER > 17 99 static_assert(test_constexpr()); 100 #endif 101 } 102
