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, typename Compare> 13// requires Predicate<Compare, Iter1::value_type, Iter2::value_type> 14// && Predicate<Compare, Iter2::value_type, Iter1::value_type> 15// constexpr bool // constexpr after C++17 16// includes(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2, Compare comp); 17 18#include <algorithm> 19#include <functional> 20#include <cassert> 21 22#include "test_macros.h" 23#include "test_iterators.h" 24 25#if TEST_STD_VER > 17 26TEST_CONSTEXPR bool test_constexpr() { 27 int ia[] = {1, 2, 2, 3, 3, 3, 4, 4, 4, 4}; 28 int ib[] = {2, 4}; 29 int ic[] = {3, 3, 3, 3}; 30 31 auto comp = [](int a, int b) {return a < b; }; 32 return std::includes(std::begin(ia), std::end(ia), std::begin(ib), std::end(ib), comp) 33 && !std::includes(std::begin(ia), std::end(ia), std::begin(ic), std::end(ic), comp) 34 ; 35 } 36#endif 37 38 39template <class Iter1, class Iter2> 40void 41test() 42{ 43 int ia[] = {1, 2, 2, 3, 3, 3, 4, 4, 4, 4}; 44 const unsigned sa = sizeof(ia)/sizeof(ia[0]); 45 int ib[] = {2, 4}; 46 const unsigned sb = sizeof(ib)/sizeof(ib[0]); 47 int ic[] = {1, 2}; 48 const unsigned sc = sizeof(ic)/sizeof(ic[0]); ((void)sc); 49 int id[] = {3, 3, 3, 3}; 50 const unsigned sd = sizeof(id)/sizeof(id[0]); ((void)sd); 51 52 assert(std::includes(Iter1(ia), Iter1(ia), Iter2(ib), Iter2(ib), std::less<int>())); 53 assert(!std::includes(Iter1(ia), Iter1(ia), Iter2(ib), Iter2(ib+1), std::less<int>())); 54 assert(std::includes(Iter1(ia), Iter1(ia+1), Iter2(ib), Iter2(ib), std::less<int>())); 55 assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia+sa), std::less<int>())); 56 57 assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(ib), Iter2(ib+sb), std::less<int>())); 58 assert(!std::includes(Iter1(ib), Iter1(ib+sb), Iter2(ia), Iter2(ia+sa), std::less<int>())); 59 60 assert(std::includes(Iter1(ia), Iter1(ia+2), Iter2(ic), Iter2(ic+2), std::less<int>())); 61 assert(!std::includes(Iter1(ia), Iter1(ia+2), Iter2(ib), Iter2(ib+2), std::less<int>())); 62 63 assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+1), std::less<int>())); 64 assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+2), std::less<int>())); 65 assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+3), std::less<int>())); 66 assert(!std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+4), std::less<int>())); 67} 68 69int main() 70{ 71 test<input_iterator<const int*>, input_iterator<const int*> >(); 72 test<input_iterator<const int*>, forward_iterator<const int*> >(); 73 test<input_iterator<const int*>, bidirectional_iterator<const int*> >(); 74 test<input_iterator<const int*>, random_access_iterator<const int*> >(); 75 test<input_iterator<const int*>, const int*>(); 76 77 test<forward_iterator<const int*>, input_iterator<const int*> >(); 78 test<forward_iterator<const int*>, forward_iterator<const int*> >(); 79 test<forward_iterator<const int*>, bidirectional_iterator<const int*> >(); 80 test<forward_iterator<const int*>, random_access_iterator<const int*> >(); 81 test<forward_iterator<const int*>, const int*>(); 82 83 test<bidirectional_iterator<const int*>, input_iterator<const int*> >(); 84 test<bidirectional_iterator<const int*>, forward_iterator<const int*> >(); 85 test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >(); 86 test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >(); 87 test<bidirectional_iterator<const int*>, const int*>(); 88 89 test<random_access_iterator<const int*>, input_iterator<const int*> >(); 90 test<random_access_iterator<const int*>, forward_iterator<const int*> >(); 91 test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >(); 92 test<random_access_iterator<const int*>, random_access_iterator<const int*> >(); 93 test<random_access_iterator<const int*>, const int*>(); 94 95 test<const int*, input_iterator<const int*> >(); 96 test<const int*, forward_iterator<const int*> >(); 97 test<const int*, bidirectional_iterator<const int*> >(); 98 test<const int*, random_access_iterator<const int*> >(); 99 test<const int*, const int*>(); 100 101#if TEST_STD_VER > 17 102 static_assert(test_constexpr()); 103#endif 104} 105