binary_transform.pass.cpp (15899B)
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 InIter1, InputIterator InIter2, class OutIter, 13 // Callable<auto, const InIter1::value_type&, const InIter2::value_type&> BinaryOp> 14 // requires OutputIterator<OutIter, BinaryOp::result_type> && CopyConstructible<BinaryOp> 15 // constexpr OutIter // constexpr after C++17 16 // transform(InIter1 first1, InIter1 last1, InIter2 first2, OutIter result, BinaryOp binary_op); 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 26 TEST_CONSTEXPR bool test_constexpr() { 27 const int ia[] = {1, 3, 6, 7}; 28 const int ib[] = {2, 4, 7, 8}; 29 int ic[] = {0, 0, 0, 0, 0}; // one bigger 30 const int expected[] = {3, 7, 13, 15}; 31 32 auto it = std::transform(std::begin(ia), std::end(ia), 33 std::begin(ib), std::begin(ic), std::plus<int>()); 34 35 return it == (std::begin(ic) + std::size(ia)) 36 && *it == 0 // don't overwrite the last value in the output array 37 && std::equal(std::begin(expected), std::end(expected), std::begin(ic), it) 38 ; 39 } 40 #endif 41 42 43 template<class InIter1, class InIter2, class OutIter> 44 void 45 test() 46 { 47 int ia[] = {0, 1, 2, 3, 4}; 48 const unsigned sa = sizeof(ia)/sizeof(ia[0]); 49 int ib[sa] = {1, 2, 3, 4, 5}; 50 OutIter r = std::transform(InIter1(ib), InIter1(ib+sa), InIter2(ia), 51 OutIter(ib), std::minus<int>()); 52 assert(base(r) == ib + sa); 53 assert(ib[0] == 1); 54 assert(ib[1] == 1); 55 assert(ib[2] == 1); 56 assert(ib[3] == 1); 57 assert(ib[4] == 1); 58 } 59 60 int main() 61 { 62 test<input_iterator<const int*>, input_iterator<const int*>, output_iterator<int*> >(); 63 test<input_iterator<const int*>, input_iterator<const int*>, input_iterator<int*> >(); 64 test<input_iterator<const int*>, input_iterator<const int*>, forward_iterator<int*> >(); 65 test<input_iterator<const int*>, input_iterator<const int*>, bidirectional_iterator<int*> >(); 66 test<input_iterator<const int*>, input_iterator<const int*>, random_access_iterator<int*> >(); 67 test<input_iterator<const int*>, input_iterator<const int*>, int*>(); 68 69 test<input_iterator<const int*>, forward_iterator<const int*>, output_iterator<int*> >(); 70 test<input_iterator<const int*>, forward_iterator<const int*>, input_iterator<int*> >(); 71 test<input_iterator<const int*>, forward_iterator<const int*>, forward_iterator<int*> >(); 72 test<input_iterator<const int*>, forward_iterator<const int*>, bidirectional_iterator<int*> >(); 73 test<input_iterator<const int*>, forward_iterator<const int*>, random_access_iterator<int*> >(); 74 test<input_iterator<const int*>, forward_iterator<const int*>, int*>(); 75 76 test<input_iterator<const int*>, bidirectional_iterator<const int*>, output_iterator<int*> >(); 77 test<input_iterator<const int*>, bidirectional_iterator<const int*>, input_iterator<int*> >(); 78 test<input_iterator<const int*>, bidirectional_iterator<const int*>, forward_iterator<int*> >(); 79 test<input_iterator<const int*>, bidirectional_iterator<const int*>, bidirectional_iterator<int*> >(); 80 test<input_iterator<const int*>, bidirectional_iterator<const int*>, random_access_iterator<int*> >(); 81 test<input_iterator<const int*>, bidirectional_iterator<const int*>, int*>(); 82 83 test<input_iterator<const int*>, random_access_iterator<const int*>, output_iterator<int*> >(); 84 test<input_iterator<const int*>, random_access_iterator<const int*>, input_iterator<int*> >(); 85 test<input_iterator<const int*>, random_access_iterator<const int*>, forward_iterator<int*> >(); 86 test<input_iterator<const int*>, random_access_iterator<const int*>, bidirectional_iterator<int*> >(); 87 test<input_iterator<const int*>, random_access_iterator<const int*>, random_access_iterator<int*> >(); 88 test<input_iterator<const int*>, random_access_iterator<const int*>, int*>(); 89 90 test<input_iterator<const int*>, const int*, output_iterator<int*> >(); 91 test<input_iterator<const int*>, const int*, input_iterator<int*> >(); 92 test<input_iterator<const int*>, const int*, forward_iterator<int*> >(); 93 test<input_iterator<const int*>, const int*, bidirectional_iterator<int*> >(); 94 test<input_iterator<const int*>, const int*, random_access_iterator<int*> >(); 95 test<input_iterator<const int*>, const int*, int*>(); 96 97 test<forward_iterator<const int*>, input_iterator<const int*>, output_iterator<int*> >(); 98 test<forward_iterator<const int*>, input_iterator<const int*>, input_iterator<int*> >(); 99 test<forward_iterator<const int*>, input_iterator<const int*>, forward_iterator<int*> >(); 100 test<forward_iterator<const int*>, input_iterator<const int*>, bidirectional_iterator<int*> >(); 101 test<forward_iterator<const int*>, input_iterator<const int*>, random_access_iterator<int*> >(); 102 test<forward_iterator<const int*>, input_iterator<const int*>, int*>(); 103 104 test<forward_iterator<const int*>, forward_iterator<const int*>, output_iterator<int*> >(); 105 test<forward_iterator<const int*>, forward_iterator<const int*>, input_iterator<int*> >(); 106 test<forward_iterator<const int*>, forward_iterator<const int*>, forward_iterator<int*> >(); 107 test<forward_iterator<const int*>, forward_iterator<const int*>, bidirectional_iterator<int*> >(); 108 test<forward_iterator<const int*>, forward_iterator<const int*>, random_access_iterator<int*> >(); 109 test<forward_iterator<const int*>, forward_iterator<const int*>, int*>(); 110 111 test<forward_iterator<const int*>, bidirectional_iterator<const int*>, output_iterator<int*> >(); 112 test<forward_iterator<const int*>, bidirectional_iterator<const int*>, input_iterator<int*> >(); 113 test<forward_iterator<const int*>, bidirectional_iterator<const int*>, forward_iterator<int*> >(); 114 test<forward_iterator<const int*>, bidirectional_iterator<const int*>, bidirectional_iterator<int*> >(); 115 test<forward_iterator<const int*>, bidirectional_iterator<const int*>, random_access_iterator<int*> >(); 116 test<forward_iterator<const int*>, bidirectional_iterator<const int*>, int*>(); 117 118 test<forward_iterator<const int*>, random_access_iterator<const int*>, output_iterator<int*> >(); 119 test<forward_iterator<const int*>, random_access_iterator<const int*>, input_iterator<int*> >(); 120 test<forward_iterator<const int*>, random_access_iterator<const int*>, forward_iterator<int*> >(); 121 test<forward_iterator<const int*>, random_access_iterator<const int*>, bidirectional_iterator<int*> >(); 122 test<forward_iterator<const int*>, random_access_iterator<const int*>, random_access_iterator<int*> >(); 123 test<forward_iterator<const int*>, random_access_iterator<const int*>, int*>(); 124 125 test<forward_iterator<const int*>, const int*, output_iterator<int*> >(); 126 test<forward_iterator<const int*>, const int*, input_iterator<int*> >(); 127 test<forward_iterator<const int*>, const int*, forward_iterator<int*> >(); 128 test<forward_iterator<const int*>, const int*, bidirectional_iterator<int*> >(); 129 test<forward_iterator<const int*>, const int*, random_access_iterator<int*> >(); 130 test<forward_iterator<const int*>, const int*, int*>(); 131 132 test<bidirectional_iterator<const int*>, input_iterator<const int*>, output_iterator<int*> >(); 133 test<bidirectional_iterator<const int*>, input_iterator<const int*>, input_iterator<int*> >(); 134 test<bidirectional_iterator<const int*>, input_iterator<const int*>, forward_iterator<int*> >(); 135 test<bidirectional_iterator<const int*>, input_iterator<const int*>, bidirectional_iterator<int*> >(); 136 test<bidirectional_iterator<const int*>, input_iterator<const int*>, random_access_iterator<int*> >(); 137 test<bidirectional_iterator<const int*>, input_iterator<const int*>, int*>(); 138 139 test<bidirectional_iterator<const int*>, forward_iterator<const int*>, output_iterator<int*> >(); 140 test<bidirectional_iterator<const int*>, forward_iterator<const int*>, input_iterator<int*> >(); 141 test<bidirectional_iterator<const int*>, forward_iterator<const int*>, forward_iterator<int*> >(); 142 test<bidirectional_iterator<const int*>, forward_iterator<const int*>, bidirectional_iterator<int*> >(); 143 test<bidirectional_iterator<const int*>, forward_iterator<const int*>, random_access_iterator<int*> >(); 144 test<bidirectional_iterator<const int*>, forward_iterator<const int*>, int*>(); 145 146 test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>, output_iterator<int*> >(); 147 test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>, input_iterator<int*> >(); 148 test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>, forward_iterator<int*> >(); 149 test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>, bidirectional_iterator<int*> >(); 150 test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>, random_access_iterator<int*> >(); 151 test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>, int*>(); 152 153 test<bidirectional_iterator<const int*>, random_access_iterator<const int*>, output_iterator<int*> >(); 154 test<bidirectional_iterator<const int*>, random_access_iterator<const int*>, input_iterator<int*> >(); 155 test<bidirectional_iterator<const int*>, random_access_iterator<const int*>, forward_iterator<int*> >(); 156 test<bidirectional_iterator<const int*>, random_access_iterator<const int*>, bidirectional_iterator<int*> >(); 157 test<bidirectional_iterator<const int*>, random_access_iterator<const int*>, random_access_iterator<int*> >(); 158 test<bidirectional_iterator<const int*>, random_access_iterator<const int*>, int*>(); 159 160 test<bidirectional_iterator<const int*>, const int*, output_iterator<int*> >(); 161 test<bidirectional_iterator<const int*>, const int*, input_iterator<int*> >(); 162 test<bidirectional_iterator<const int*>, const int*, forward_iterator<int*> >(); 163 test<bidirectional_iterator<const int*>, const int*, bidirectional_iterator<int*> >(); 164 test<bidirectional_iterator<const int*>, const int*, random_access_iterator<int*> >(); 165 test<bidirectional_iterator<const int*>, const int*, int*>(); 166 167 test<random_access_iterator<const int*>, input_iterator<const int*>, output_iterator<int*> >(); 168 test<random_access_iterator<const int*>, input_iterator<const int*>, input_iterator<int*> >(); 169 test<random_access_iterator<const int*>, input_iterator<const int*>, forward_iterator<int*> >(); 170 test<random_access_iterator<const int*>, input_iterator<const int*>, bidirectional_iterator<int*> >(); 171 test<random_access_iterator<const int*>, input_iterator<const int*>, random_access_iterator<int*> >(); 172 test<random_access_iterator<const int*>, input_iterator<const int*>, int*>(); 173 174 test<random_access_iterator<const int*>, forward_iterator<const int*>, output_iterator<int*> >(); 175 test<random_access_iterator<const int*>, forward_iterator<const int*>, input_iterator<int*> >(); 176 test<random_access_iterator<const int*>, forward_iterator<const int*>, forward_iterator<int*> >(); 177 test<random_access_iterator<const int*>, forward_iterator<const int*>, bidirectional_iterator<int*> >(); 178 test<random_access_iterator<const int*>, forward_iterator<const int*>, random_access_iterator<int*> >(); 179 test<random_access_iterator<const int*>, forward_iterator<const int*>, int*>(); 180 181 test<random_access_iterator<const int*>, bidirectional_iterator<const int*>, output_iterator<int*> >(); 182 test<random_access_iterator<const int*>, bidirectional_iterator<const int*>, input_iterator<int*> >(); 183 test<random_access_iterator<const int*>, bidirectional_iterator<const int*>, forward_iterator<int*> >(); 184 test<random_access_iterator<const int*>, bidirectional_iterator<const int*>, bidirectional_iterator<int*> >(); 185 test<random_access_iterator<const int*>, bidirectional_iterator<const int*>, random_access_iterator<int*> >(); 186 test<random_access_iterator<const int*>, bidirectional_iterator<const int*>, int*>(); 187 188 test<random_access_iterator<const int*>, random_access_iterator<const int*>, output_iterator<int*> >(); 189 test<random_access_iterator<const int*>, random_access_iterator<const int*>, input_iterator<int*> >(); 190 test<random_access_iterator<const int*>, random_access_iterator<const int*>, forward_iterator<int*> >(); 191 test<random_access_iterator<const int*>, random_access_iterator<const int*>, bidirectional_iterator<int*> >(); 192 test<random_access_iterator<const int*>, random_access_iterator<const int*>, random_access_iterator<int*> >(); 193 test<random_access_iterator<const int*>, random_access_iterator<const int*>, int*>(); 194 195 test<random_access_iterator<const int*>, const int*, output_iterator<int*> >(); 196 test<random_access_iterator<const int*>, const int*, input_iterator<int*> >(); 197 test<random_access_iterator<const int*>, const int*, forward_iterator<int*> >(); 198 test<random_access_iterator<const int*>, const int*, bidirectional_iterator<int*> >(); 199 test<random_access_iterator<const int*>, const int*, random_access_iterator<int*> >(); 200 test<random_access_iterator<const int*>, const int*, int*>(); 201 202 test<const int*, input_iterator<const int*>, output_iterator<int*> >(); 203 test<const int*, input_iterator<const int*>, input_iterator<int*> >(); 204 test<const int*, input_iterator<const int*>, forward_iterator<int*> >(); 205 test<const int*, input_iterator<const int*>, bidirectional_iterator<int*> >(); 206 test<const int*, input_iterator<const int*>, random_access_iterator<int*> >(); 207 test<const int*, input_iterator<const int*>, int*>(); 208 209 test<const int*, forward_iterator<const int*>, output_iterator<int*> >(); 210 test<const int*, forward_iterator<const int*>, input_iterator<int*> >(); 211 test<const int*, forward_iterator<const int*>, forward_iterator<int*> >(); 212 test<const int*, forward_iterator<const int*>, bidirectional_iterator<int*> >(); 213 test<const int*, forward_iterator<const int*>, random_access_iterator<int*> >(); 214 test<const int*, forward_iterator<const int*>, int*>(); 215 216 test<const int*, bidirectional_iterator<const int*>, output_iterator<int*> >(); 217 test<const int*, bidirectional_iterator<const int*>, input_iterator<int*> >(); 218 test<const int*, bidirectional_iterator<const int*>, forward_iterator<int*> >(); 219 test<const int*, bidirectional_iterator<const int*>, bidirectional_iterator<int*> >(); 220 test<const int*, bidirectional_iterator<const int*>, random_access_iterator<int*> >(); 221 test<const int*, bidirectional_iterator<const int*>, int*>(); 222 223 test<const int*, random_access_iterator<const int*>, output_iterator<int*> >(); 224 test<const int*, random_access_iterator<const int*>, input_iterator<int*> >(); 225 test<const int*, random_access_iterator<const int*>, forward_iterator<int*> >(); 226 test<const int*, random_access_iterator<const int*>, bidirectional_iterator<int*> >(); 227 test<const int*, random_access_iterator<const int*>, random_access_iterator<int*> >(); 228 test<const int*, random_access_iterator<const int*>, int*>(); 229 230 test<const int*, const int*, output_iterator<int*> >(); 231 test<const int*, const int*, input_iterator<int*> >(); 232 test<const int*, const int*, forward_iterator<int*> >(); 233 test<const int*, const int*, bidirectional_iterator<int*> >(); 234 test<const int*, const int*, random_access_iterator<int*> >(); 235 test<const int*, const int*, int*>(); 236 237 #if TEST_STD_VER > 17 238 static_assert(test_constexpr()); 239 #endif 240 }