| 1 | // Core algorithmic facilities -*- C++ -*- |
|---|---|
| 2 | |
| 3 | // Copyright (C) 2001-2024 Free Software Foundation, Inc. |
| 4 | // |
| 5 | // This file is part of the GNU ISO C++ Library. This library is free |
| 6 | // software; you can redistribute it and/or modify it under the |
| 7 | // terms of the GNU General Public License as published by the |
| 8 | // Free Software Foundation; either version 3, or (at your option) |
| 9 | // any later version. |
| 10 | |
| 11 | // This library is distributed in the hope that it will be useful, |
| 12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | // GNU General Public License for more details. |
| 15 | |
| 16 | // Under Section 7 of GPL version 3, you are granted additional |
| 17 | // permissions described in the GCC Runtime Library Exception, version |
| 18 | // 3.1, as published by the Free Software Foundation. |
| 19 | |
| 20 | // You should have received a copy of the GNU General Public License and |
| 21 | // a copy of the GCC Runtime Library Exception along with this program; |
| 22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| 23 | // <http://www.gnu.org/licenses/>. |
| 24 | |
| 25 | /* |
| 26 | * |
| 27 | * Copyright (c) 1994 |
| 28 | * Hewlett-Packard Company |
| 29 | * |
| 30 | * Permission to use, copy, modify, distribute and sell this software |
| 31 | * and its documentation for any purpose is hereby granted without fee, |
| 32 | * provided that the above copyright notice appear in all copies and |
| 33 | * that both that copyright notice and this permission notice appear |
| 34 | * in supporting documentation. Hewlett-Packard Company makes no |
| 35 | * representations about the suitability of this software for any |
| 36 | * purpose. It is provided "as is" without express or implied warranty. |
| 37 | * |
| 38 | * |
| 39 | * Copyright (c) 1996-1998 |
| 40 | * Silicon Graphics Computer Systems, Inc. |
| 41 | * |
| 42 | * Permission to use, copy, modify, distribute and sell this software |
| 43 | * and its documentation for any purpose is hereby granted without fee, |
| 44 | * provided that the above copyright notice appear in all copies and |
| 45 | * that both that copyright notice and this permission notice appear |
| 46 | * in supporting documentation. Silicon Graphics makes no |
| 47 | * representations about the suitability of this software for any |
| 48 | * purpose. It is provided "as is" without express or implied warranty. |
| 49 | */ |
| 50 | |
| 51 | /** @file bits/stl_algobase.h |
| 52 | * This is an internal header file, included by other library headers. |
| 53 | * Do not attempt to use it directly. @headername{algorithm} |
| 54 | */ |
| 55 | |
| 56 | #ifndef _STL_ALGOBASE_H |
| 57 | #define _STL_ALGOBASE_H 1 |
| 58 | |
| 59 | #include <bits/c++config.h> |
| 60 | #include <bits/functexcept.h> |
| 61 | #include <bits/cpp_type_traits.h> |
| 62 | #include <ext/type_traits.h> |
| 63 | #include <ext/numeric_traits.h> |
| 64 | #include <bits/stl_pair.h> |
| 65 | #include <bits/stl_iterator_base_types.h> |
| 66 | #include <bits/stl_iterator_base_funcs.h> |
| 67 | #include <bits/stl_iterator.h> |
| 68 | #include <bits/concept_check.h> |
| 69 | #include <debug/debug.h> |
| 70 | #include <bits/move.h> // For std::swap |
| 71 | #include <bits/predefined_ops.h> |
| 72 | #if __cplusplus >= 201103L |
| 73 | # include <type_traits> |
| 74 | #endif |
| 75 | #if __cplusplus >= 201402L |
| 76 | # include <bit> // std::__bit_width |
| 77 | #endif |
| 78 | #if __cplusplus >= 202002L |
| 79 | # include <compare> |
| 80 | #endif |
| 81 | |
| 82 | namespace std _GLIBCXX_VISIBILITY(default) |
| 83 | { |
| 84 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 85 | |
| 86 | /* |
| 87 | * A constexpr wrapper for __builtin_memcmp. |
| 88 | * @param __num The number of elements of type _Tp (not bytes). |
| 89 | */ |
| 90 | template<typename _Tp, typename _Up> |
| 91 | _GLIBCXX14_CONSTEXPR |
| 92 | inline int |
| 93 | __memcmp(const _Tp* __first1, const _Up* __first2, size_t __num) |
| 94 | { |
| 95 | #if __cplusplus >= 201103L |
| 96 | static_assert(sizeof(_Tp) == sizeof(_Up), "can be compared with memcmp"); |
| 97 | #endif |
| 98 | #ifdef __cpp_lib_is_constant_evaluated |
| 99 | if (std::is_constant_evaluated()) |
| 100 | { |
| 101 | for(; __num > 0; ++__first1, ++__first2, --__num) |
| 102 | if (*__first1 != *__first2) |
| 103 | return *__first1 < *__first2 ? -1 : 1; |
| 104 | return 0; |
| 105 | } |
| 106 | else |
| 107 | #endif |
| 108 | return __builtin_memcmp(__first1, __first2, sizeof(_Tp) * __num); |
| 109 | } |
| 110 | |
| 111 | #if __cplusplus < 201103L |
| 112 | // See http://gcc.gnu.org/ml/libstdc++/2004-08/msg00167.html: in a |
| 113 | // nutshell, we are partially implementing the resolution of DR 187, |
| 114 | // when it's safe, i.e., the value_types are equal. |
| 115 | template<bool _BoolType> |
| 116 | struct __iter_swap |
| 117 | { |
| 118 | template<typename _ForwardIterator1, typename _ForwardIterator2> |
| 119 | static void |
| 120 | iter_swap(_ForwardIterator1 __a, _ForwardIterator2 __b) |
| 121 | { |
| 122 | typedef typename iterator_traits<_ForwardIterator1>::value_type |
| 123 | _ValueType1; |
| 124 | _ValueType1 __tmp = *__a; |
| 125 | *__a = *__b; |
| 126 | *__b = __tmp; |
| 127 | } |
| 128 | }; |
| 129 | |
| 130 | template<> |
| 131 | struct __iter_swap<true> |
| 132 | { |
| 133 | template<typename _ForwardIterator1, typename _ForwardIterator2> |
| 134 | static void |
| 135 | iter_swap(_ForwardIterator1 __a, _ForwardIterator2 __b) |
| 136 | { |
| 137 | swap(*__a, *__b); |
| 138 | } |
| 139 | }; |
| 140 | #endif // C++03 |
| 141 | |
| 142 | /** |
| 143 | * @brief Swaps the contents of two iterators. |
| 144 | * @ingroup mutating_algorithms |
| 145 | * @param __a An iterator. |
| 146 | * @param __b Another iterator. |
| 147 | * @return Nothing. |
| 148 | * |
| 149 | * This function swaps the values pointed to by two iterators, not the |
| 150 | * iterators themselves. |
| 151 | */ |
| 152 | template<typename _ForwardIterator1, typename _ForwardIterator2> |
| 153 | _GLIBCXX20_CONSTEXPR |
| 154 | inline void |
| 155 | iter_swap(_ForwardIterator1 __a, _ForwardIterator2 __b) |
| 156 | { |
| 157 | // concept requirements |
| 158 | __glibcxx_function_requires(_Mutable_ForwardIteratorConcept< |
| 159 | _ForwardIterator1>) |
| 160 | __glibcxx_function_requires(_Mutable_ForwardIteratorConcept< |
| 161 | _ForwardIterator2>) |
| 162 | |
| 163 | #if __cplusplus < 201103L |
| 164 | typedef typename iterator_traits<_ForwardIterator1>::value_type |
| 165 | _ValueType1; |
| 166 | typedef typename iterator_traits<_ForwardIterator2>::value_type |
| 167 | _ValueType2; |
| 168 | |
| 169 | __glibcxx_function_requires(_ConvertibleConcept<_ValueType1, |
| 170 | _ValueType2>) |
| 171 | __glibcxx_function_requires(_ConvertibleConcept<_ValueType2, |
| 172 | _ValueType1>) |
| 173 | |
| 174 | typedef typename iterator_traits<_ForwardIterator1>::reference |
| 175 | _ReferenceType1; |
| 176 | typedef typename iterator_traits<_ForwardIterator2>::reference |
| 177 | _ReferenceType2; |
| 178 | std::__iter_swap<__are_same<_ValueType1, _ValueType2>::__value |
| 179 | && __are_same<_ValueType1&, _ReferenceType1>::__value |
| 180 | && __are_same<_ValueType2&, _ReferenceType2>::__value>:: |
| 181 | iter_swap(__a, __b); |
| 182 | #else |
| 183 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 184 | // 187. iter_swap underspecified |
| 185 | swap(*__a, *__b); |
| 186 | #endif |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * @brief Swap the elements of two sequences. |
| 191 | * @ingroup mutating_algorithms |
| 192 | * @param __first1 A forward iterator. |
| 193 | * @param __last1 A forward iterator. |
| 194 | * @param __first2 A forward iterator. |
| 195 | * @return An iterator equal to @p first2+(last1-first1). |
| 196 | * |
| 197 | * Swaps each element in the range @p [first1,last1) with the |
| 198 | * corresponding element in the range @p [first2,(last1-first1)). |
| 199 | * The ranges must not overlap. |
| 200 | */ |
| 201 | template<typename _ForwardIterator1, typename _ForwardIterator2> |
| 202 | _GLIBCXX20_CONSTEXPR |
| 203 | _ForwardIterator2 |
| 204 | swap_ranges(_ForwardIterator1 __first1, _ForwardIterator1 __last1, |
| 205 | _ForwardIterator2 __first2) |
| 206 | { |
| 207 | // concept requirements |
| 208 | __glibcxx_function_requires(_Mutable_ForwardIteratorConcept< |
| 209 | _ForwardIterator1>) |
| 210 | __glibcxx_function_requires(_Mutable_ForwardIteratorConcept< |
| 211 | _ForwardIterator2>) |
| 212 | __glibcxx_requires_valid_range(__first1, __last1); |
| 213 | |
| 214 | for (; __first1 != __last1; ++__first1, (void)++__first2) |
| 215 | std::iter_swap(__first1, __first2); |
| 216 | return __first2; |
| 217 | } |
| 218 | |
| 219 | /** |
| 220 | * @brief This does what you think it does. |
| 221 | * @ingroup sorting_algorithms |
| 222 | * @param __a A thing of arbitrary type. |
| 223 | * @param __b Another thing of arbitrary type. |
| 224 | * @return The lesser of the parameters. |
| 225 | * |
| 226 | * This is the simple classic generic implementation. It will work on |
| 227 | * temporary expressions, since they are only evaluated once, unlike a |
| 228 | * preprocessor macro. |
| 229 | */ |
| 230 | template<typename _Tp> |
| 231 | _GLIBCXX_NODISCARD _GLIBCXX14_CONSTEXPR |
| 232 | inline const _Tp& |
| 233 | min(const _Tp& __a, const _Tp& __b) |
| 234 | { |
| 235 | // concept requirements |
| 236 | __glibcxx_function_requires(_LessThanComparableConcept<_Tp>) |
| 237 | //return __b < __a ? __b : __a; |
| 238 | if (__b < __a) |
| 239 | return __b; |
| 240 | return __a; |
| 241 | } |
| 242 | |
| 243 | /** |
| 244 | * @brief This does what you think it does. |
| 245 | * @ingroup sorting_algorithms |
| 246 | * @param __a A thing of arbitrary type. |
| 247 | * @param __b Another thing of arbitrary type. |
| 248 | * @return The greater of the parameters. |
| 249 | * |
| 250 | * This is the simple classic generic implementation. It will work on |
| 251 | * temporary expressions, since they are only evaluated once, unlike a |
| 252 | * preprocessor macro. |
| 253 | */ |
| 254 | template<typename _Tp> |
| 255 | _GLIBCXX_NODISCARD _GLIBCXX14_CONSTEXPR |
| 256 | inline const _Tp& |
| 257 | max(const _Tp& __a, const _Tp& __b) |
| 258 | { |
| 259 | // concept requirements |
| 260 | __glibcxx_function_requires(_LessThanComparableConcept<_Tp>) |
| 261 | //return __a < __b ? __b : __a; |
| 262 | if (__a < __b) |
| 263 | return __b; |
| 264 | return __a; |
| 265 | } |
| 266 | |
| 267 | /** |
| 268 | * @brief This does what you think it does. |
| 269 | * @ingroup sorting_algorithms |
| 270 | * @param __a A thing of arbitrary type. |
| 271 | * @param __b Another thing of arbitrary type. |
| 272 | * @param __comp A @link comparison_functors comparison functor@endlink. |
| 273 | * @return The lesser of the parameters. |
| 274 | * |
| 275 | * This will work on temporary expressions, since they are only evaluated |
| 276 | * once, unlike a preprocessor macro. |
| 277 | */ |
| 278 | template<typename _Tp, typename _Compare> |
| 279 | _GLIBCXX_NODISCARD _GLIBCXX14_CONSTEXPR |
| 280 | inline const _Tp& |
| 281 | min(const _Tp& __a, const _Tp& __b, _Compare __comp) |
| 282 | { |
| 283 | //return __comp(__b, __a) ? __b : __a; |
| 284 | if (__comp(__b, __a)) |
| 285 | return __b; |
| 286 | return __a; |
| 287 | } |
| 288 | |
| 289 | /** |
| 290 | * @brief This does what you think it does. |
| 291 | * @ingroup sorting_algorithms |
| 292 | * @param __a A thing of arbitrary type. |
| 293 | * @param __b Another thing of arbitrary type. |
| 294 | * @param __comp A @link comparison_functors comparison functor@endlink. |
| 295 | * @return The greater of the parameters. |
| 296 | * |
| 297 | * This will work on temporary expressions, since they are only evaluated |
| 298 | * once, unlike a preprocessor macro. |
| 299 | */ |
| 300 | template<typename _Tp, typename _Compare> |
| 301 | _GLIBCXX_NODISCARD _GLIBCXX14_CONSTEXPR |
| 302 | inline const _Tp& |
| 303 | max(const _Tp& __a, const _Tp& __b, _Compare __comp) |
| 304 | { |
| 305 | //return __comp(__a, __b) ? __b : __a; |
| 306 | if (__comp(__a, __b)) |
| 307 | return __b; |
| 308 | return __a; |
| 309 | } |
| 310 | |
| 311 | // Fallback implementation of the function in bits/stl_iterator.h used to |
| 312 | // remove the __normal_iterator wrapper. See copy, fill, ... |
| 313 | template<typename _Iterator> |
| 314 | _GLIBCXX20_CONSTEXPR |
| 315 | inline _Iterator |
| 316 | __niter_base(_Iterator __it) |
| 317 | _GLIBCXX_NOEXCEPT_IF(std::is_nothrow_copy_constructible<_Iterator>::value) |
| 318 | { return __it; } |
| 319 | |
| 320 | #if __cplusplus < 201103L |
| 321 | template<typename _Ite, typename _Seq> |
| 322 | _Ite |
| 323 | __niter_base(const ::__gnu_debug::_Safe_iterator<_Ite, _Seq, |
| 324 | std::random_access_iterator_tag>&); |
| 325 | |
| 326 | template<typename _Ite, typename _Cont, typename _Seq> |
| 327 | _Ite |
| 328 | __niter_base(const ::__gnu_debug::_Safe_iterator< |
| 329 | ::__gnu_cxx::__normal_iterator<_Ite, _Cont>, _Seq, |
| 330 | std::random_access_iterator_tag>&); |
| 331 | #else |
| 332 | template<typename _Ite, typename _Seq> |
| 333 | _GLIBCXX20_CONSTEXPR |
| 334 | decltype(std::__niter_base(std::declval<_Ite>())) |
| 335 | __niter_base(const ::__gnu_debug::_Safe_iterator<_Ite, _Seq, |
| 336 | std::random_access_iterator_tag>&) |
| 337 | noexcept(std::is_nothrow_copy_constructible<_Ite>::value); |
| 338 | #endif |
| 339 | |
| 340 | // Reverse the __niter_base transformation to get a |
| 341 | // __normal_iterator back again (this assumes that __normal_iterator |
| 342 | // is only used to wrap random access iterators, like pointers). |
| 343 | template<typename _From, typename _To> |
| 344 | _GLIBCXX20_CONSTEXPR |
| 345 | inline _From |
| 346 | __niter_wrap(_From __from, _To __res) |
| 347 | { return __from + (std::__niter_base(__res) - std::__niter_base(__from)); } |
| 348 | |
| 349 | // No need to wrap, iterator already has the right type. |
| 350 | template<typename _Iterator> |
| 351 | _GLIBCXX20_CONSTEXPR |
| 352 | inline _Iterator |
| 353 | __niter_wrap(const _Iterator&, _Iterator __res) |
| 354 | { return __res; } |
| 355 | |
| 356 | // All of these auxiliary structs serve two purposes. (1) Replace |
| 357 | // calls to copy with memmove whenever possible. (Memmove, not memcpy, |
| 358 | // because the input and output ranges are permitted to overlap.) |
| 359 | // (2) If we're using random access iterators, then write the loop as |
| 360 | // a for loop with an explicit count. |
| 361 | |
| 362 | template<bool _IsMove, bool _IsSimple, typename _Category> |
| 363 | struct __copy_move |
| 364 | { |
| 365 | template<typename _II, typename _OI> |
| 366 | _GLIBCXX20_CONSTEXPR |
| 367 | static _OI |
| 368 | __copy_m(_II __first, _II __last, _OI __result) |
| 369 | { |
| 370 | for (; __first != __last; ++__result, (void)++__first) |
| 371 | *__result = *__first; |
| 372 | return __result; |
| 373 | } |
| 374 | }; |
| 375 | |
| 376 | #if __cplusplus >= 201103L |
| 377 | template<typename _Category> |
| 378 | struct __copy_move<true, false, _Category> |
| 379 | { |
| 380 | template<typename _II, typename _OI> |
| 381 | _GLIBCXX20_CONSTEXPR |
| 382 | static _OI |
| 383 | __copy_m(_II __first, _II __last, _OI __result) |
| 384 | { |
| 385 | for (; __first != __last; ++__result, (void)++__first) |
| 386 | *__result = std::move(*__first); |
| 387 | return __result; |
| 388 | } |
| 389 | }; |
| 390 | #endif |
| 391 | |
| 392 | template<> |
| 393 | struct __copy_move<false, false, random_access_iterator_tag> |
| 394 | { |
| 395 | template<typename _II, typename _OI> |
| 396 | _GLIBCXX20_CONSTEXPR |
| 397 | static _OI |
| 398 | __copy_m(_II __first, _II __last, _OI __result) |
| 399 | { |
| 400 | typedef typename iterator_traits<_II>::difference_type _Distance; |
| 401 | for(_Distance __n = __last - __first; __n > 0; --__n) |
| 402 | { |
| 403 | *__result = *__first; |
| 404 | ++__first; |
| 405 | ++__result; |
| 406 | } |
| 407 | return __result; |
| 408 | } |
| 409 | |
| 410 | template<typename _Tp, typename _Up> |
| 411 | static void |
| 412 | __assign_one(_Tp* __to, _Up* __from) |
| 413 | { *__to = *__from; } |
| 414 | }; |
| 415 | |
| 416 | #if __cplusplus >= 201103L |
| 417 | template<> |
| 418 | struct __copy_move<true, false, random_access_iterator_tag> |
| 419 | { |
| 420 | template<typename _II, typename _OI> |
| 421 | _GLIBCXX20_CONSTEXPR |
| 422 | static _OI |
| 423 | __copy_m(_II __first, _II __last, _OI __result) |
| 424 | { |
| 425 | typedef typename iterator_traits<_II>::difference_type _Distance; |
| 426 | for(_Distance __n = __last - __first; __n > 0; --__n) |
| 427 | { |
| 428 | *__result = std::move(*__first); |
| 429 | ++__first; |
| 430 | ++__result; |
| 431 | } |
| 432 | return __result; |
| 433 | } |
| 434 | |
| 435 | template<typename _Tp, typename _Up> |
| 436 | static void |
| 437 | __assign_one(_Tp* __to, _Up* __from) |
| 438 | { *__to = std::move(*__from); } |
| 439 | }; |
| 440 | #endif |
| 441 | |
| 442 | template<bool _IsMove> |
| 443 | struct __copy_move<_IsMove, true, random_access_iterator_tag> |
| 444 | { |
| 445 | template<typename _Tp, typename _Up> |
| 446 | _GLIBCXX20_CONSTEXPR |
| 447 | static _Up* |
| 448 | __copy_m(_Tp* __first, _Tp* __last, _Up* __result) |
| 449 | { |
| 450 | const ptrdiff_t _Num = __last - __first; |
| 451 | if (__builtin_expect(_Num > 1, true)) |
| 452 | __builtin_memmove(__result, __first, sizeof(_Tp) * _Num); |
| 453 | else if (_Num == 1) |
| 454 | std::__copy_move<_IsMove, false, random_access_iterator_tag>:: |
| 455 | __assign_one(__result, __first); |
| 456 | return __result + _Num; |
| 457 | } |
| 458 | }; |
| 459 | |
| 460 | _GLIBCXX_BEGIN_NAMESPACE_CONTAINER |
| 461 | |
| 462 | template<typename _Tp, typename _Ref, typename _Ptr> |
| 463 | struct _Deque_iterator; |
| 464 | |
| 465 | struct _Bit_iterator; |
| 466 | |
| 467 | _GLIBCXX_END_NAMESPACE_CONTAINER |
| 468 | |
| 469 | #if _GLIBCXX_HOSTED |
| 470 | // Helpers for streambuf iterators (either istream or ostream). |
| 471 | // NB: avoid including <iosfwd>, relatively large. |
| 472 | template<typename _CharT> |
| 473 | struct char_traits; |
| 474 | |
| 475 | template<typename _CharT, typename _Traits> |
| 476 | class istreambuf_iterator; |
| 477 | |
| 478 | template<typename _CharT, typename _Traits> |
| 479 | class ostreambuf_iterator; |
| 480 | |
| 481 | template<bool _IsMove, typename _CharT> |
| 482 | typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value, |
| 483 | ostreambuf_iterator<_CharT, char_traits<_CharT> > >::__type |
| 484 | __copy_move_a2(_CharT*, _CharT*, |
| 485 | ostreambuf_iterator<_CharT, char_traits<_CharT> >); |
| 486 | |
| 487 | template<bool _IsMove, typename _CharT> |
| 488 | typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value, |
| 489 | ostreambuf_iterator<_CharT, char_traits<_CharT> > >::__type |
| 490 | __copy_move_a2(const _CharT*, const _CharT*, |
| 491 | ostreambuf_iterator<_CharT, char_traits<_CharT> >); |
| 492 | |
| 493 | template<bool _IsMove, typename _CharT> |
| 494 | typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value, |
| 495 | _CharT*>::__type |
| 496 | __copy_move_a2(istreambuf_iterator<_CharT, char_traits<_CharT> >, |
| 497 | istreambuf_iterator<_CharT, char_traits<_CharT> >, _CharT*); |
| 498 | |
| 499 | template<bool _IsMove, typename _CharT> |
| 500 | typename __gnu_cxx::__enable_if< |
| 501 | __is_char<_CharT>::__value, |
| 502 | _GLIBCXX_STD_C::_Deque_iterator<_CharT, _CharT&, _CharT*> >::__type |
| 503 | __copy_move_a2( |
| 504 | istreambuf_iterator<_CharT, char_traits<_CharT> >, |
| 505 | istreambuf_iterator<_CharT, char_traits<_CharT> >, |
| 506 | _GLIBCXX_STD_C::_Deque_iterator<_CharT, _CharT&, _CharT*>); |
| 507 | #endif // HOSTED |
| 508 | |
| 509 | template<bool _IsMove, typename _II, typename _OI> |
| 510 | _GLIBCXX20_CONSTEXPR |
| 511 | inline _OI |
| 512 | __copy_move_a2(_II __first, _II __last, _OI __result) |
| 513 | { |
| 514 | typedef typename iterator_traits<_II>::iterator_category _Category; |
| 515 | #ifdef __cpp_lib_is_constant_evaluated |
| 516 | if (std::is_constant_evaluated()) |
| 517 | return std::__copy_move<_IsMove, false, _Category>:: |
| 518 | __copy_m(__first, __last, __result); |
| 519 | #endif |
| 520 | return std::__copy_move<_IsMove, __memcpyable<_OI, _II>::__value, |
| 521 | _Category>::__copy_m(__first, __last, __result); |
| 522 | } |
| 523 | |
| 524 | template<bool _IsMove, |
| 525 | typename _Tp, typename _Ref, typename _Ptr, typename _OI> |
| 526 | _OI |
| 527 | __copy_move_a1(_GLIBCXX_STD_C::_Deque_iterator<_Tp, _Ref, _Ptr>, |
| 528 | _GLIBCXX_STD_C::_Deque_iterator<_Tp, _Ref, _Ptr>, |
| 529 | _OI); |
| 530 | |
| 531 | template<bool _IsMove, |
| 532 | typename _ITp, typename _IRef, typename _IPtr, typename _OTp> |
| 533 | _GLIBCXX_STD_C::_Deque_iterator<_OTp, _OTp&, _OTp*> |
| 534 | __copy_move_a1(_GLIBCXX_STD_C::_Deque_iterator<_ITp, _IRef, _IPtr>, |
| 535 | _GLIBCXX_STD_C::_Deque_iterator<_ITp, _IRef, _IPtr>, |
| 536 | _GLIBCXX_STD_C::_Deque_iterator<_OTp, _OTp&, _OTp*>); |
| 537 | |
| 538 | template<bool _IsMove, typename _II, typename _Tp> |
| 539 | typename __gnu_cxx::__enable_if< |
| 540 | __is_random_access_iter<_II>::__value, |
| 541 | _GLIBCXX_STD_C::_Deque_iterator<_Tp, _Tp&, _Tp*> >::__type |
| 542 | __copy_move_a1(_II, _II, _GLIBCXX_STD_C::_Deque_iterator<_Tp, _Tp&, _Tp*>); |
| 543 | |
| 544 | template<bool _IsMove, typename _II, typename _OI> |
| 545 | _GLIBCXX20_CONSTEXPR |
| 546 | inline _OI |
| 547 | __copy_move_a1(_II __first, _II __last, _OI __result) |
| 548 | { return std::__copy_move_a2<_IsMove>(__first, __last, __result); } |
| 549 | |
| 550 | template<bool _IsMove, typename _II, typename _OI> |
| 551 | _GLIBCXX20_CONSTEXPR |
| 552 | inline _OI |
| 553 | __copy_move_a(_II __first, _II __last, _OI __result) |
| 554 | { |
| 555 | return std::__niter_wrap(__result, |
| 556 | std::__copy_move_a1<_IsMove>(std::__niter_base(__first), |
| 557 | std::__niter_base(__last), |
| 558 | std::__niter_base(__result))); |
| 559 | } |
| 560 | |
| 561 | template<bool _IsMove, |
| 562 | typename _Ite, typename _Seq, typename _Cat, typename _OI> |
| 563 | _GLIBCXX20_CONSTEXPR |
| 564 | _OI |
| 565 | __copy_move_a(const ::__gnu_debug::_Safe_iterator<_Ite, _Seq, _Cat>&, |
| 566 | const ::__gnu_debug::_Safe_iterator<_Ite, _Seq, _Cat>&, |
| 567 | _OI); |
| 568 | |
| 569 | template<bool _IsMove, |
| 570 | typename _II, typename _Ite, typename _Seq, typename _Cat> |
| 571 | _GLIBCXX20_CONSTEXPR |
| 572 | __gnu_debug::_Safe_iterator<_Ite, _Seq, _Cat> |
| 573 | __copy_move_a(_II, _II, |
| 574 | const ::__gnu_debug::_Safe_iterator<_Ite, _Seq, _Cat>&); |
| 575 | |
| 576 | template<bool _IsMove, |
| 577 | typename _IIte, typename _ISeq, typename _ICat, |
| 578 | typename _OIte, typename _OSeq, typename _OCat> |
| 579 | _GLIBCXX20_CONSTEXPR |
| 580 | ::__gnu_debug::_Safe_iterator<_OIte, _OSeq, _OCat> |
| 581 | __copy_move_a(const ::__gnu_debug::_Safe_iterator<_IIte, _ISeq, _ICat>&, |
| 582 | const ::__gnu_debug::_Safe_iterator<_IIte, _ISeq, _ICat>&, |
| 583 | const ::__gnu_debug::_Safe_iterator<_OIte, _OSeq, _OCat>&); |
| 584 | |
| 585 | template<typename _InputIterator, typename _Size, typename _OutputIterator> |
| 586 | _GLIBCXX20_CONSTEXPR |
| 587 | _OutputIterator |
| 588 | __copy_n_a(_InputIterator __first, _Size __n, _OutputIterator __result, |
| 589 | bool) |
| 590 | { |
| 591 | if (__n > 0) |
| 592 | { |
| 593 | while (true) |
| 594 | { |
| 595 | *__result = *__first; |
| 596 | ++__result; |
| 597 | if (--__n > 0) |
| 598 | ++__first; |
| 599 | else |
| 600 | break; |
| 601 | } |
| 602 | } |
| 603 | return __result; |
| 604 | } |
| 605 | |
| 606 | #if _GLIBCXX_HOSTED |
| 607 | template<typename _CharT, typename _Size> |
| 608 | typename __gnu_cxx::__enable_if< |
| 609 | __is_char<_CharT>::__value, _CharT*>::__type |
| 610 | __copy_n_a(istreambuf_iterator<_CharT, char_traits<_CharT> >, |
| 611 | _Size, _CharT*, bool); |
| 612 | |
| 613 | template<typename _CharT, typename _Size> |
| 614 | typename __gnu_cxx::__enable_if< |
| 615 | __is_char<_CharT>::__value, |
| 616 | _GLIBCXX_STD_C::_Deque_iterator<_CharT, _CharT&, _CharT*> >::__type |
| 617 | __copy_n_a(istreambuf_iterator<_CharT, char_traits<_CharT> >, _Size, |
| 618 | _GLIBCXX_STD_C::_Deque_iterator<_CharT, _CharT&, _CharT*>, |
| 619 | bool); |
| 620 | #endif |
| 621 | |
| 622 | /** |
| 623 | * @brief Copies the range [first,last) into result. |
| 624 | * @ingroup mutating_algorithms |
| 625 | * @param __first An input iterator. |
| 626 | * @param __last An input iterator. |
| 627 | * @param __result An output iterator. |
| 628 | * @return result + (last - first) |
| 629 | * |
| 630 | * This inline function will boil down to a call to @c memmove whenever |
| 631 | * possible. Failing that, if random access iterators are passed, then the |
| 632 | * loop count will be known (and therefore a candidate for compiler |
| 633 | * optimizations such as unrolling). Result may not be contained within |
| 634 | * [first,last); the copy_backward function should be used instead. |
| 635 | * |
| 636 | * Note that the end of the output range is permitted to be contained |
| 637 | * within [first,last). |
| 638 | */ |
| 639 | template<typename _II, typename _OI> |
| 640 | _GLIBCXX20_CONSTEXPR |
| 641 | inline _OI |
| 642 | copy(_II __first, _II __last, _OI __result) |
| 643 | { |
| 644 | // concept requirements |
| 645 | __glibcxx_function_requires(_InputIteratorConcept<_II>) |
| 646 | __glibcxx_function_requires(_OutputIteratorConcept<_OI, |
| 647 | typename iterator_traits<_II>::reference>) |
| 648 | __glibcxx_requires_can_increment_range(__first, __last, __result); |
| 649 | |
| 650 | return std::__copy_move_a<__is_move_iterator<_II>::__value> |
| 651 | (std::__miter_base(__first), std::__miter_base(__last), __result); |
| 652 | } |
| 653 | |
| 654 | #if __cplusplus >= 201103L |
| 655 | /** |
| 656 | * @brief Moves the range [first,last) into result. |
| 657 | * @ingroup mutating_algorithms |
| 658 | * @param __first An input iterator. |
| 659 | * @param __last An input iterator. |
| 660 | * @param __result An output iterator. |
| 661 | * @return result + (last - first) |
| 662 | * |
| 663 | * This inline function will boil down to a call to @c memmove whenever |
| 664 | * possible. Failing that, if random access iterators are passed, then the |
| 665 | * loop count will be known (and therefore a candidate for compiler |
| 666 | * optimizations such as unrolling). Result may not be contained within |
| 667 | * [first,last); the move_backward function should be used instead. |
| 668 | * |
| 669 | * Note that the end of the output range is permitted to be contained |
| 670 | * within [first,last). |
| 671 | */ |
| 672 | template<typename _II, typename _OI> |
| 673 | _GLIBCXX20_CONSTEXPR |
| 674 | inline _OI |
| 675 | move(_II __first, _II __last, _OI __result) |
| 676 | { |
| 677 | // concept requirements |
| 678 | __glibcxx_function_requires(_InputIteratorConcept<_II>) |
| 679 | __glibcxx_function_requires(_OutputIteratorConcept<_OI, |
| 680 | typename iterator_traits<_II>::value_type&&>) |
| 681 | __glibcxx_requires_can_increment_range(__first, __last, __result); |
| 682 | |
| 683 | return std::__copy_move_a<true>(std::__miter_base(__first), |
| 684 | std::__miter_base(__last), __result); |
| 685 | } |
| 686 | |
| 687 | #define _GLIBCXX_MOVE3(_Tp, _Up, _Vp) std::move(_Tp, _Up, _Vp) |
| 688 | #else |
| 689 | #define _GLIBCXX_MOVE3(_Tp, _Up, _Vp) std::copy(_Tp, _Up, _Vp) |
| 690 | #endif |
| 691 | |
| 692 | template<bool _IsMove, bool _IsSimple, typename _Category> |
| 693 | struct __copy_move_backward |
| 694 | { |
| 695 | template<typename _BI1, typename _BI2> |
| 696 | _GLIBCXX20_CONSTEXPR |
| 697 | static _BI2 |
| 698 | __copy_move_b(_BI1 __first, _BI1 __last, _BI2 __result) |
| 699 | { |
| 700 | while (__first != __last) |
| 701 | *--__result = *--__last; |
| 702 | return __result; |
| 703 | } |
| 704 | }; |
| 705 | |
| 706 | #if __cplusplus >= 201103L |
| 707 | template<typename _Category> |
| 708 | struct __copy_move_backward<true, false, _Category> |
| 709 | { |
| 710 | template<typename _BI1, typename _BI2> |
| 711 | _GLIBCXX20_CONSTEXPR |
| 712 | static _BI2 |
| 713 | __copy_move_b(_BI1 __first, _BI1 __last, _BI2 __result) |
| 714 | { |
| 715 | while (__first != __last) |
| 716 | *--__result = std::move(*--__last); |
| 717 | return __result; |
| 718 | } |
| 719 | }; |
| 720 | #endif |
| 721 | |
| 722 | template<> |
| 723 | struct __copy_move_backward<false, false, random_access_iterator_tag> |
| 724 | { |
| 725 | template<typename _BI1, typename _BI2> |
| 726 | _GLIBCXX20_CONSTEXPR |
| 727 | static _BI2 |
| 728 | __copy_move_b(_BI1 __first, _BI1 __last, _BI2 __result) |
| 729 | { |
| 730 | typename iterator_traits<_BI1>::difference_type |
| 731 | __n = __last - __first; |
| 732 | for (; __n > 0; --__n) |
| 733 | *--__result = *--__last; |
| 734 | return __result; |
| 735 | } |
| 736 | }; |
| 737 | |
| 738 | #if __cplusplus >= 201103L |
| 739 | template<> |
| 740 | struct __copy_move_backward<true, false, random_access_iterator_tag> |
| 741 | { |
| 742 | template<typename _BI1, typename _BI2> |
| 743 | _GLIBCXX20_CONSTEXPR |
| 744 | static _BI2 |
| 745 | __copy_move_b(_BI1 __first, _BI1 __last, _BI2 __result) |
| 746 | { |
| 747 | typename iterator_traits<_BI1>::difference_type |
| 748 | __n = __last - __first; |
| 749 | for (; __n > 0; --__n) |
| 750 | *--__result = std::move(*--__last); |
| 751 | return __result; |
| 752 | } |
| 753 | }; |
| 754 | #endif |
| 755 | |
| 756 | template<bool _IsMove> |
| 757 | struct __copy_move_backward<_IsMove, true, random_access_iterator_tag> |
| 758 | { |
| 759 | template<typename _Tp, typename _Up> |
| 760 | _GLIBCXX20_CONSTEXPR |
| 761 | static _Up* |
| 762 | __copy_move_b(_Tp* __first, _Tp* __last, _Up* __result) |
| 763 | { |
| 764 | const ptrdiff_t _Num = __last - __first; |
| 765 | if (__builtin_expect(_Num > 1, true)) |
| 766 | __builtin_memmove(__result - _Num, __first, sizeof(_Tp) * _Num); |
| 767 | else if (_Num == 1) |
| 768 | std::__copy_move<_IsMove, false, random_access_iterator_tag>:: |
| 769 | __assign_one(__result - 1, __first); |
| 770 | return __result - _Num; |
| 771 | } |
| 772 | }; |
| 773 | |
| 774 | template<bool _IsMove, typename _BI1, typename _BI2> |
| 775 | _GLIBCXX20_CONSTEXPR |
| 776 | inline _BI2 |
| 777 | __copy_move_backward_a2(_BI1 __first, _BI1 __last, _BI2 __result) |
| 778 | { |
| 779 | typedef typename iterator_traits<_BI1>::iterator_category _Category; |
| 780 | #ifdef __cpp_lib_is_constant_evaluated |
| 781 | if (std::is_constant_evaluated()) |
| 782 | return std::__copy_move_backward<_IsMove, false, _Category>:: |
| 783 | __copy_move_b(__first, __last, __result); |
| 784 | #endif |
| 785 | return std::__copy_move_backward<_IsMove, |
| 786 | __memcpyable<_BI2, _BI1>::__value, |
| 787 | _Category>::__copy_move_b(__first, |
| 788 | __last, |
| 789 | __result); |
| 790 | } |
| 791 | |
| 792 | template<bool _IsMove, typename _BI1, typename _BI2> |
| 793 | _GLIBCXX20_CONSTEXPR |
| 794 | inline _BI2 |
| 795 | __copy_move_backward_a1(_BI1 __first, _BI1 __last, _BI2 __result) |
| 796 | { return std::__copy_move_backward_a2<_IsMove>(__first, __last, __result); } |
| 797 | |
| 798 | template<bool _IsMove, |
| 799 | typename _Tp, typename _Ref, typename _Ptr, typename _OI> |
| 800 | _OI |
| 801 | __copy_move_backward_a1(_GLIBCXX_STD_C::_Deque_iterator<_Tp, _Ref, _Ptr>, |
| 802 | _GLIBCXX_STD_C::_Deque_iterator<_Tp, _Ref, _Ptr>, |
| 803 | _OI); |
| 804 | |
| 805 | template<bool _IsMove, |
| 806 | typename _ITp, typename _IRef, typename _IPtr, typename _OTp> |
| 807 | _GLIBCXX_STD_C::_Deque_iterator<_OTp, _OTp&, _OTp*> |
| 808 | __copy_move_backward_a1( |
| 809 | _GLIBCXX_STD_C::_Deque_iterator<_ITp, _IRef, _IPtr>, |
| 810 | _GLIBCXX_STD_C::_Deque_iterator<_ITp, _IRef, _IPtr>, |
| 811 | _GLIBCXX_STD_C::_Deque_iterator<_OTp, _OTp&, _OTp*>); |
| 812 | |
| 813 | template<bool _IsMove, typename _II, typename _Tp> |
| 814 | typename __gnu_cxx::__enable_if< |
| 815 | __is_random_access_iter<_II>::__value, |
| 816 | _GLIBCXX_STD_C::_Deque_iterator<_Tp, _Tp&, _Tp*> >::__type |
| 817 | __copy_move_backward_a1(_II, _II, |
| 818 | _GLIBCXX_STD_C::_Deque_iterator<_Tp, _Tp&, _Tp*>); |
| 819 | |
| 820 | template<bool _IsMove, typename _II, typename _OI> |
| 821 | _GLIBCXX20_CONSTEXPR |
| 822 | inline _OI |
| 823 | __copy_move_backward_a(_II __first, _II __last, _OI __result) |
| 824 | { |
| 825 | return std::__niter_wrap(__result, |
| 826 | std::__copy_move_backward_a1<_IsMove> |
| 827 | (std::__niter_base(__first), std::__niter_base(__last), |
| 828 | std::__niter_base(__result))); |
| 829 | } |
| 830 | |
| 831 | template<bool _IsMove, |
| 832 | typename _Ite, typename _Seq, typename _Cat, typename _OI> |
| 833 | _GLIBCXX20_CONSTEXPR |
| 834 | _OI |
| 835 | __copy_move_backward_a( |
| 836 | const ::__gnu_debug::_Safe_iterator<_Ite, _Seq, _Cat>&, |
| 837 | const ::__gnu_debug::_Safe_iterator<_Ite, _Seq, _Cat>&, |
| 838 | _OI); |
| 839 | |
| 840 | template<bool _IsMove, |
| 841 | typename _II, typename _Ite, typename _Seq, typename _Cat> |
| 842 | _GLIBCXX20_CONSTEXPR |
| 843 | __gnu_debug::_Safe_iterator<_Ite, _Seq, _Cat> |
| 844 | __copy_move_backward_a(_II, _II, |
| 845 | const ::__gnu_debug::_Safe_iterator<_Ite, _Seq, _Cat>&); |
| 846 | |
| 847 | template<bool _IsMove, |
| 848 | typename _IIte, typename _ISeq, typename _ICat, |
| 849 | typename _OIte, typename _OSeq, typename _OCat> |
| 850 | _GLIBCXX20_CONSTEXPR |
| 851 | ::__gnu_debug::_Safe_iterator<_OIte, _OSeq, _OCat> |
| 852 | __copy_move_backward_a( |
| 853 | const ::__gnu_debug::_Safe_iterator<_IIte, _ISeq, _ICat>&, |
| 854 | const ::__gnu_debug::_Safe_iterator<_IIte, _ISeq, _ICat>&, |
| 855 | const ::__gnu_debug::_Safe_iterator<_OIte, _OSeq, _OCat>&); |
| 856 | |
| 857 | /** |
| 858 | * @brief Copies the range [first,last) into result. |
| 859 | * @ingroup mutating_algorithms |
| 860 | * @param __first A bidirectional iterator. |
| 861 | * @param __last A bidirectional iterator. |
| 862 | * @param __result A bidirectional iterator. |
| 863 | * @return result - (last - first) |
| 864 | * |
| 865 | * The function has the same effect as copy, but starts at the end of the |
| 866 | * range and works its way to the start, returning the start of the result. |
| 867 | * This inline function will boil down to a call to @c memmove whenever |
| 868 | * possible. Failing that, if random access iterators are passed, then the |
| 869 | * loop count will be known (and therefore a candidate for compiler |
| 870 | * optimizations such as unrolling). |
| 871 | * |
| 872 | * Result may not be in the range (first,last]. Use copy instead. Note |
| 873 | * that the start of the output range may overlap [first,last). |
| 874 | */ |
| 875 | template<typename _BI1, typename _BI2> |
| 876 | _GLIBCXX20_CONSTEXPR |
| 877 | inline _BI2 |
| 878 | copy_backward(_BI1 __first, _BI1 __last, _BI2 __result) |
| 879 | { |
| 880 | // concept requirements |
| 881 | __glibcxx_function_requires(_BidirectionalIteratorConcept<_BI1>) |
| 882 | __glibcxx_function_requires(_Mutable_BidirectionalIteratorConcept<_BI2>) |
| 883 | __glibcxx_function_requires(_OutputIteratorConcept<_BI2, |
| 884 | typename iterator_traits<_BI1>::reference>) |
| 885 | __glibcxx_requires_can_decrement_range(__first, __last, __result); |
| 886 | |
| 887 | return std::__copy_move_backward_a<__is_move_iterator<_BI1>::__value> |
| 888 | (std::__miter_base(__first), std::__miter_base(__last), __result); |
| 889 | } |
| 890 | |
| 891 | #if __cplusplus >= 201103L |
| 892 | /** |
| 893 | * @brief Moves the range [first,last) into result. |
| 894 | * @ingroup mutating_algorithms |
| 895 | * @param __first A bidirectional iterator. |
| 896 | * @param __last A bidirectional iterator. |
| 897 | * @param __result A bidirectional iterator. |
| 898 | * @return result - (last - first) |
| 899 | * |
| 900 | * The function has the same effect as move, but starts at the end of the |
| 901 | * range and works its way to the start, returning the start of the result. |
| 902 | * This inline function will boil down to a call to @c memmove whenever |
| 903 | * possible. Failing that, if random access iterators are passed, then the |
| 904 | * loop count will be known (and therefore a candidate for compiler |
| 905 | * optimizations such as unrolling). |
| 906 | * |
| 907 | * Result may not be in the range (first,last]. Use move instead. Note |
| 908 | * that the start of the output range may overlap [first,last). |
| 909 | */ |
| 910 | template<typename _BI1, typename _BI2> |
| 911 | _GLIBCXX20_CONSTEXPR |
| 912 | inline _BI2 |
| 913 | move_backward(_BI1 __first, _BI1 __last, _BI2 __result) |
| 914 | { |
| 915 | // concept requirements |
| 916 | __glibcxx_function_requires(_BidirectionalIteratorConcept<_BI1>) |
| 917 | __glibcxx_function_requires(_Mutable_BidirectionalIteratorConcept<_BI2>) |
| 918 | __glibcxx_function_requires(_OutputIteratorConcept<_BI2, |
| 919 | typename iterator_traits<_BI1>::value_type&&>) |
| 920 | __glibcxx_requires_can_decrement_range(__first, __last, __result); |
| 921 | |
| 922 | return std::__copy_move_backward_a<true>(std::__miter_base(__first), |
| 923 | std::__miter_base(__last), |
| 924 | __result); |
| 925 | } |
| 926 | |
| 927 | #define _GLIBCXX_MOVE_BACKWARD3(_Tp, _Up, _Vp) std::move_backward(_Tp, _Up, _Vp) |
| 928 | #else |
| 929 | #define _GLIBCXX_MOVE_BACKWARD3(_Tp, _Up, _Vp) std::copy_backward(_Tp, _Up, _Vp) |
| 930 | #endif |
| 931 | |
| 932 | template<typename _ForwardIterator, typename _Tp> |
| 933 | _GLIBCXX20_CONSTEXPR |
| 934 | inline typename |
| 935 | __gnu_cxx::__enable_if<!__is_scalar<_Tp>::__value, void>::__type |
| 936 | __fill_a1(_ForwardIterator __first, _ForwardIterator __last, |
| 937 | const _Tp& __value) |
| 938 | { |
| 939 | for (; __first != __last; ++__first) |
| 940 | *__first = __value; |
| 941 | } |
| 942 | |
| 943 | template<typename _ForwardIterator, typename _Tp> |
| 944 | _GLIBCXX20_CONSTEXPR |
| 945 | inline typename |
| 946 | __gnu_cxx::__enable_if<__is_scalar<_Tp>::__value, void>::__type |
| 947 | __fill_a1(_ForwardIterator __first, _ForwardIterator __last, |
| 948 | const _Tp& __value) |
| 949 | { |
| 950 | const _Tp __tmp = __value; |
| 951 | for (; __first != __last; ++__first) |
| 952 | *__first = __tmp; |
| 953 | } |
| 954 | |
| 955 | // Specialization: for char types we can use memset. |
| 956 | template<typename _Tp> |
| 957 | _GLIBCXX20_CONSTEXPR |
| 958 | inline typename |
| 959 | __gnu_cxx::__enable_if<__is_byte<_Tp>::__value, void>::__type |
| 960 | __fill_a1(_Tp* __first, _Tp* __last, const _Tp& __c) |
| 961 | { |
| 962 | const _Tp __tmp = __c; |
| 963 | #if __cpp_lib_is_constant_evaluated |
| 964 | if (std::is_constant_evaluated()) |
| 965 | { |
| 966 | for (; __first != __last; ++__first) |
| 967 | *__first = __tmp; |
| 968 | return; |
| 969 | } |
| 970 | #endif |
| 971 | if (const size_t __len = __last - __first) |
| 972 | __builtin_memset(__first, static_cast<unsigned char>(__tmp), __len); |
| 973 | } |
| 974 | |
| 975 | template<typename _Ite, typename _Cont, typename _Tp> |
| 976 | _GLIBCXX20_CONSTEXPR |
| 977 | inline void |
| 978 | __fill_a1(::__gnu_cxx::__normal_iterator<_Ite, _Cont> __first, |
| 979 | ::__gnu_cxx::__normal_iterator<_Ite, _Cont> __last, |
| 980 | const _Tp& __value) |
| 981 | { std::__fill_a1(__first.base(), __last.base(), __value); } |
| 982 | |
| 983 | template<typename _Tp, typename _VTp> |
| 984 | void |
| 985 | __fill_a1(const _GLIBCXX_STD_C::_Deque_iterator<_Tp, _Tp&, _Tp*>&, |
| 986 | const _GLIBCXX_STD_C::_Deque_iterator<_Tp, _Tp&, _Tp*>&, |
| 987 | const _VTp&); |
| 988 | |
| 989 | _GLIBCXX20_CONSTEXPR |
| 990 | void |
| 991 | __fill_a1(_GLIBCXX_STD_C::_Bit_iterator, _GLIBCXX_STD_C::_Bit_iterator, |
| 992 | const bool&); |
| 993 | |
| 994 | template<typename _FIte, typename _Tp> |
| 995 | _GLIBCXX20_CONSTEXPR |
| 996 | inline void |
| 997 | __fill_a(_FIte __first, _FIte __last, const _Tp& __value) |
| 998 | { std::__fill_a1(__first, __last, __value); } |
| 999 | |
| 1000 | template<typename _Ite, typename _Seq, typename _Cat, typename _Tp> |
| 1001 | _GLIBCXX20_CONSTEXPR |
| 1002 | void |
| 1003 | __fill_a(const ::__gnu_debug::_Safe_iterator<_Ite, _Seq, _Cat>&, |
| 1004 | const ::__gnu_debug::_Safe_iterator<_Ite, _Seq, _Cat>&, |
| 1005 | const _Tp&); |
| 1006 | |
| 1007 | /** |
| 1008 | * @brief Fills the range [first,last) with copies of value. |
| 1009 | * @ingroup mutating_algorithms |
| 1010 | * @param __first A forward iterator. |
| 1011 | * @param __last A forward iterator. |
| 1012 | * @param __value A reference-to-const of arbitrary type. |
| 1013 | * @return Nothing. |
| 1014 | * |
| 1015 | * This function fills a range with copies of the same value. For char |
| 1016 | * types filling contiguous areas of memory, this becomes an inline call |
| 1017 | * to @c memset or @c wmemset. |
| 1018 | */ |
| 1019 | template<typename _ForwardIterator, typename _Tp> |
| 1020 | _GLIBCXX20_CONSTEXPR |
| 1021 | inline void |
| 1022 | fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) |
| 1023 | { |
| 1024 | // concept requirements |
| 1025 | __glibcxx_function_requires(_Mutable_ForwardIteratorConcept< |
| 1026 | _ForwardIterator>) |
| 1027 | __glibcxx_requires_valid_range(__first, __last); |
| 1028 | |
| 1029 | std::__fill_a(__first, __last, __value); |
| 1030 | } |
| 1031 | |
| 1032 | #pragma GCC diagnostic push |
| 1033 | #pragma GCC diagnostic ignored "-Wlong-long" |
| 1034 | // Used by fill_n, generate_n, etc. to convert _Size to an integral type: |
| 1035 | inline _GLIBCXX_CONSTEXPR int |
| 1036 | __size_to_integer(int __n) { return __n; } |
| 1037 | inline _GLIBCXX_CONSTEXPR unsigned |
| 1038 | __size_to_integer(unsigned __n) { return __n; } |
| 1039 | inline _GLIBCXX_CONSTEXPR long |
| 1040 | __size_to_integer(long __n) { return __n; } |
| 1041 | inline _GLIBCXX_CONSTEXPR unsigned long |
| 1042 | __size_to_integer(unsigned long __n) { return __n; } |
| 1043 | inline _GLIBCXX_CONSTEXPR long long |
| 1044 | __size_to_integer(long long __n) { return __n; } |
| 1045 | inline _GLIBCXX_CONSTEXPR unsigned long long |
| 1046 | __size_to_integer(unsigned long long __n) { return __n; } |
| 1047 | |
| 1048 | #if defined(__GLIBCXX_TYPE_INT_N_0) |
| 1049 | __extension__ inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_0 |
| 1050 | __size_to_integer(__GLIBCXX_TYPE_INT_N_0 __n) { return __n; } |
| 1051 | __extension__ inline _GLIBCXX_CONSTEXPR unsigned __GLIBCXX_TYPE_INT_N_0 |
| 1052 | __size_to_integer(unsigned __GLIBCXX_TYPE_INT_N_0 __n) { return __n; } |
| 1053 | #endif |
| 1054 | #if defined(__GLIBCXX_TYPE_INT_N_1) |
| 1055 | __extension__ inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_1 |
| 1056 | __size_to_integer(__GLIBCXX_TYPE_INT_N_1 __n) { return __n; } |
| 1057 | __extension__ inline _GLIBCXX_CONSTEXPR unsigned __GLIBCXX_TYPE_INT_N_1 |
| 1058 | __size_to_integer(unsigned __GLIBCXX_TYPE_INT_N_1 __n) { return __n; } |
| 1059 | #endif |
| 1060 | #if defined(__GLIBCXX_TYPE_INT_N_2) |
| 1061 | __extension__ inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_2 |
| 1062 | __size_to_integer(__GLIBCXX_TYPE_INT_N_2 __n) { return __n; } |
| 1063 | __extension__ inline _GLIBCXX_CONSTEXPR unsigned __GLIBCXX_TYPE_INT_N_2 |
| 1064 | __size_to_integer(unsigned __GLIBCXX_TYPE_INT_N_2 __n) { return __n; } |
| 1065 | #endif |
| 1066 | #if defined(__GLIBCXX_TYPE_INT_N_3) |
| 1067 | __extension__ inline _GLIBCXX_CONSTEXPR unsigned __GLIBCXX_TYPE_INT_N_3 |
| 1068 | __size_to_integer(__GLIBCXX_TYPE_INT_N_3 __n) { return __n; } |
| 1069 | __extension__ inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_3 |
| 1070 | __size_to_integer(unsigned __GLIBCXX_TYPE_INT_N_3 __n) { return __n; } |
| 1071 | #endif |
| 1072 | |
| 1073 | inline _GLIBCXX_CONSTEXPR long long |
| 1074 | __size_to_integer(float __n) { return (long long)__n; } |
| 1075 | inline _GLIBCXX_CONSTEXPR long long |
| 1076 | __size_to_integer(double __n) { return (long long)__n; } |
| 1077 | inline _GLIBCXX_CONSTEXPR long long |
| 1078 | __size_to_integer(long double __n) { return (long long)__n; } |
| 1079 | #if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_FLOAT128) |
| 1080 | __extension__ inline _GLIBCXX_CONSTEXPR long long |
| 1081 | __size_to_integer(__float128 __n) { return (long long)__n; } |
| 1082 | #endif |
| 1083 | #pragma GCC diagnostic pop |
| 1084 | |
| 1085 | template<typename _OutputIterator, typename _Size, typename _Tp> |
| 1086 | _GLIBCXX20_CONSTEXPR |
| 1087 | inline typename |
| 1088 | __gnu_cxx::__enable_if<!__is_scalar<_Tp>::__value, _OutputIterator>::__type |
| 1089 | __fill_n_a1(_OutputIterator __first, _Size __n, const _Tp& __value) |
| 1090 | { |
| 1091 | for (; __n > 0; --__n, (void) ++__first) |
| 1092 | *__first = __value; |
| 1093 | return __first; |
| 1094 | } |
| 1095 | |
| 1096 | template<typename _OutputIterator, typename _Size, typename _Tp> |
| 1097 | _GLIBCXX20_CONSTEXPR |
| 1098 | inline typename |
| 1099 | __gnu_cxx::__enable_if<__is_scalar<_Tp>::__value, _OutputIterator>::__type |
| 1100 | __fill_n_a1(_OutputIterator __first, _Size __n, const _Tp& __value) |
| 1101 | { |
| 1102 | const _Tp __tmp = __value; |
| 1103 | for (; __n > 0; --__n, (void) ++__first) |
| 1104 | *__first = __tmp; |
| 1105 | return __first; |
| 1106 | } |
| 1107 | |
| 1108 | template<typename _Ite, typename _Seq, typename _Cat, typename _Size, |
| 1109 | typename _Tp> |
| 1110 | _GLIBCXX20_CONSTEXPR |
| 1111 | ::__gnu_debug::_Safe_iterator<_Ite, _Seq, _Cat> |
| 1112 | __fill_n_a(const ::__gnu_debug::_Safe_iterator<_Ite, _Seq, _Cat>& __first, |
| 1113 | _Size __n, const _Tp& __value, |
| 1114 | std::input_iterator_tag); |
| 1115 | |
| 1116 | template<typename _OutputIterator, typename _Size, typename _Tp> |
| 1117 | _GLIBCXX20_CONSTEXPR |
| 1118 | inline _OutputIterator |
| 1119 | __fill_n_a(_OutputIterator __first, _Size __n, const _Tp& __value, |
| 1120 | std::output_iterator_tag) |
| 1121 | { |
| 1122 | #if __cplusplus >= 201103L |
| 1123 | static_assert(is_integral<_Size>{}, "fill_n must pass integral size"); |
| 1124 | #endif |
| 1125 | return __fill_n_a1(__first, __n, __value); |
| 1126 | } |
| 1127 | |
| 1128 | template<typename _OutputIterator, typename _Size, typename _Tp> |
| 1129 | _GLIBCXX20_CONSTEXPR |
| 1130 | inline _OutputIterator |
| 1131 | __fill_n_a(_OutputIterator __first, _Size __n, const _Tp& __value, |
| 1132 | std::input_iterator_tag) |
| 1133 | { |
| 1134 | #if __cplusplus >= 201103L |
| 1135 | static_assert(is_integral<_Size>{}, "fill_n must pass integral size"); |
| 1136 | #endif |
| 1137 | return __fill_n_a1(__first, __n, __value); |
| 1138 | } |
| 1139 | |
| 1140 | template<typename _OutputIterator, typename _Size, typename _Tp> |
| 1141 | _GLIBCXX20_CONSTEXPR |
| 1142 | inline _OutputIterator |
| 1143 | __fill_n_a(_OutputIterator __first, _Size __n, const _Tp& __value, |
| 1144 | std::random_access_iterator_tag) |
| 1145 | { |
| 1146 | #if __cplusplus >= 201103L |
| 1147 | static_assert(is_integral<_Size>{}, "fill_n must pass integral size"); |
| 1148 | #endif |
| 1149 | if (__n <= 0) |
| 1150 | return __first; |
| 1151 | |
| 1152 | __glibcxx_requires_can_increment(__first, __n); |
| 1153 | |
| 1154 | std::__fill_a(__first, __first + __n, __value); |
| 1155 | return __first + __n; |
| 1156 | } |
| 1157 | |
| 1158 | /** |
| 1159 | * @brief Fills the range [first,first+n) with copies of value. |
| 1160 | * @ingroup mutating_algorithms |
| 1161 | * @param __first An output iterator. |
| 1162 | * @param __n The count of copies to perform. |
| 1163 | * @param __value A reference-to-const of arbitrary type. |
| 1164 | * @return The iterator at first+n. |
| 1165 | * |
| 1166 | * This function fills a range with copies of the same value. For char |
| 1167 | * types filling contiguous areas of memory, this becomes an inline call |
| 1168 | * to @c memset or @c wmemset. |
| 1169 | * |
| 1170 | * If @p __n is negative, the function does nothing. |
| 1171 | */ |
| 1172 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 1173 | // DR 865. More algorithms that throw away information |
| 1174 | // DR 426. search_n(), fill_n(), and generate_n() with negative n |
| 1175 | template<typename _OI, typename _Size, typename _Tp> |
| 1176 | _GLIBCXX20_CONSTEXPR |
| 1177 | inline _OI |
| 1178 | fill_n(_OI __first, _Size __n, const _Tp& __value) |
| 1179 | { |
| 1180 | // concept requirements |
| 1181 | __glibcxx_function_requires(_OutputIteratorConcept<_OI, const _Tp&>) |
| 1182 | |
| 1183 | return std::__fill_n_a(__first, std::__size_to_integer(__n), __value, |
| 1184 | std::__iterator_category(__first)); |
| 1185 | } |
| 1186 | |
| 1187 | template<bool _BoolType> |
| 1188 | struct __equal |
| 1189 | { |
| 1190 | template<typename _II1, typename _II2> |
| 1191 | _GLIBCXX20_CONSTEXPR |
| 1192 | static bool |
| 1193 | equal(_II1 __first1, _II1 __last1, _II2 __first2) |
| 1194 | { |
| 1195 | for (; __first1 != __last1; ++__first1, (void) ++__first2) |
| 1196 | if (!(*__first1 == *__first2)) |
| 1197 | return false; |
| 1198 | return true; |
| 1199 | } |
| 1200 | }; |
| 1201 | |
| 1202 | template<> |
| 1203 | struct __equal<true> |
| 1204 | { |
| 1205 | template<typename _Tp> |
| 1206 | _GLIBCXX20_CONSTEXPR |
| 1207 | static bool |
| 1208 | equal(const _Tp* __first1, const _Tp* __last1, const _Tp* __first2) |
| 1209 | { |
| 1210 | if (const size_t __len = (__last1 - __first1)) |
| 1211 | return !std::__memcmp(__first1, __first2, __len); |
| 1212 | return true; |
| 1213 | } |
| 1214 | }; |
| 1215 | |
| 1216 | template<typename _Tp, typename _Ref, typename _Ptr, typename _II> |
| 1217 | typename __gnu_cxx::__enable_if< |
| 1218 | __is_random_access_iter<_II>::__value, bool>::__type |
| 1219 | __equal_aux1(_GLIBCXX_STD_C::_Deque_iterator<_Tp, _Ref, _Ptr>, |
| 1220 | _GLIBCXX_STD_C::_Deque_iterator<_Tp, _Ref, _Ptr>, |
| 1221 | _II); |
| 1222 | |
| 1223 | template<typename _Tp1, typename _Ref1, typename _Ptr1, |
| 1224 | typename _Tp2, typename _Ref2, typename _Ptr2> |
| 1225 | bool |
| 1226 | __equal_aux1(_GLIBCXX_STD_C::_Deque_iterator<_Tp1, _Ref1, _Ptr1>, |
| 1227 | _GLIBCXX_STD_C::_Deque_iterator<_Tp1, _Ref1, _Ptr1>, |
| 1228 | _GLIBCXX_STD_C::_Deque_iterator<_Tp2, _Ref2, _Ptr2>); |
| 1229 | |
| 1230 | template<typename _II, typename _Tp, typename _Ref, typename _Ptr> |
| 1231 | typename __gnu_cxx::__enable_if< |
| 1232 | __is_random_access_iter<_II>::__value, bool>::__type |
| 1233 | __equal_aux1(_II, _II, |
| 1234 | _GLIBCXX_STD_C::_Deque_iterator<_Tp, _Ref, _Ptr>); |
| 1235 | |
| 1236 | template<typename _II1, typename _II2> |
| 1237 | _GLIBCXX20_CONSTEXPR |
| 1238 | inline bool |
| 1239 | __equal_aux1(_II1 __first1, _II1 __last1, _II2 __first2) |
| 1240 | { |
| 1241 | typedef typename iterator_traits<_II1>::value_type _ValueType1; |
| 1242 | const bool __simple = ((__is_integer<_ValueType1>::__value |
| 1243 | || __is_pointer<_ValueType1>::__value) |
| 1244 | && __memcmpable<_II1, _II2>::__value); |
| 1245 | return std::__equal<__simple>::equal(__first1, __last1, __first2); |
| 1246 | } |
| 1247 | |
| 1248 | template<typename _II1, typename _II2> |
| 1249 | _GLIBCXX20_CONSTEXPR |
| 1250 | inline bool |
| 1251 | __equal_aux(_II1 __first1, _II1 __last1, _II2 __first2) |
| 1252 | { |
| 1253 | return std::__equal_aux1(std::__niter_base(__first1), |
| 1254 | std::__niter_base(__last1), |
| 1255 | std::__niter_base(__first2)); |
| 1256 | } |
| 1257 | |
| 1258 | template<typename _II1, typename _Seq1, typename _Cat1, typename _II2> |
| 1259 | _GLIBCXX20_CONSTEXPR |
| 1260 | bool |
| 1261 | __equal_aux(const ::__gnu_debug::_Safe_iterator<_II1, _Seq1, _Cat1>&, |
| 1262 | const ::__gnu_debug::_Safe_iterator<_II1, _Seq1, _Cat1>&, |
| 1263 | _II2); |
| 1264 | |
| 1265 | template<typename _II1, typename _II2, typename _Seq2, typename _Cat2> |
| 1266 | _GLIBCXX20_CONSTEXPR |
| 1267 | bool |
| 1268 | __equal_aux(_II1, _II1, |
| 1269 | const ::__gnu_debug::_Safe_iterator<_II2, _Seq2, _Cat2>&); |
| 1270 | |
| 1271 | template<typename _II1, typename _Seq1, typename _Cat1, |
| 1272 | typename _II2, typename _Seq2, typename _Cat2> |
| 1273 | _GLIBCXX20_CONSTEXPR |
| 1274 | bool |
| 1275 | __equal_aux(const ::__gnu_debug::_Safe_iterator<_II1, _Seq1, _Cat1>&, |
| 1276 | const ::__gnu_debug::_Safe_iterator<_II1, _Seq1, _Cat1>&, |
| 1277 | const ::__gnu_debug::_Safe_iterator<_II2, _Seq2, _Cat2>&); |
| 1278 | |
| 1279 | template<typename, typename> |
| 1280 | struct __lc_rai |
| 1281 | { |
| 1282 | template<typename _II1, typename _II2> |
| 1283 | _GLIBCXX20_CONSTEXPR |
| 1284 | static _II1 |
| 1285 | __newlast1(_II1, _II1 __last1, _II2, _II2) |
| 1286 | { return __last1; } |
| 1287 | |
| 1288 | template<typename _II> |
| 1289 | _GLIBCXX20_CONSTEXPR |
| 1290 | static bool |
| 1291 | __cnd2(_II __first, _II __last) |
| 1292 | { return __first != __last; } |
| 1293 | }; |
| 1294 | |
| 1295 | template<> |
| 1296 | struct __lc_rai<random_access_iterator_tag, random_access_iterator_tag> |
| 1297 | { |
| 1298 | template<typename _RAI1, typename _RAI2> |
| 1299 | _GLIBCXX20_CONSTEXPR |
| 1300 | static _RAI1 |
| 1301 | __newlast1(_RAI1 __first1, _RAI1 __last1, |
| 1302 | _RAI2 __first2, _RAI2 __last2) |
| 1303 | { |
| 1304 | const typename iterator_traits<_RAI1>::difference_type |
| 1305 | __diff1 = __last1 - __first1; |
| 1306 | const typename iterator_traits<_RAI2>::difference_type |
| 1307 | __diff2 = __last2 - __first2; |
| 1308 | return __diff2 < __diff1 ? __first1 + __diff2 : __last1; |
| 1309 | } |
| 1310 | |
| 1311 | template<typename _RAI> |
| 1312 | static _GLIBCXX20_CONSTEXPR bool |
| 1313 | __cnd2(_RAI, _RAI) |
| 1314 | { return true; } |
| 1315 | }; |
| 1316 | |
| 1317 | template<typename _II1, typename _II2, typename _Compare> |
| 1318 | _GLIBCXX20_CONSTEXPR |
| 1319 | bool |
| 1320 | __lexicographical_compare_impl(_II1 __first1, _II1 __last1, |
| 1321 | _II2 __first2, _II2 __last2, |
| 1322 | _Compare __comp) |
| 1323 | { |
| 1324 | typedef typename iterator_traits<_II1>::iterator_category _Category1; |
| 1325 | typedef typename iterator_traits<_II2>::iterator_category _Category2; |
| 1326 | typedef std::__lc_rai<_Category1, _Category2> __rai_type; |
| 1327 | |
| 1328 | __last1 = __rai_type::__newlast1(__first1, __last1, __first2, __last2); |
| 1329 | for (; __first1 != __last1 && __rai_type::__cnd2(__first2, __last2); |
| 1330 | ++__first1, (void)++__first2) |
| 1331 | { |
| 1332 | if (__comp(__first1, __first2)) |
| 1333 | return true; |
| 1334 | if (__comp(__first2, __first1)) |
| 1335 | return false; |
| 1336 | } |
| 1337 | return __first1 == __last1 && __first2 != __last2; |
| 1338 | } |
| 1339 | |
| 1340 | template<bool _BoolType> |
| 1341 | struct __lexicographical_compare |
| 1342 | { |
| 1343 | template<typename _II1, typename _II2> |
| 1344 | _GLIBCXX20_CONSTEXPR |
| 1345 | static bool |
| 1346 | __lc(_II1 __first1, _II1 __last1, _II2 __first2, _II2 __last2) |
| 1347 | { |
| 1348 | using __gnu_cxx::__ops::__iter_less_iter; |
| 1349 | return std::__lexicographical_compare_impl(__first1, __last1, |
| 1350 | __first2, __last2, |
| 1351 | __iter_less_iter()); |
| 1352 | } |
| 1353 | |
| 1354 | template<typename _II1, typename _II2> |
| 1355 | _GLIBCXX20_CONSTEXPR |
| 1356 | static int |
| 1357 | __3way(_II1 __first1, _II1 __last1, _II2 __first2, _II2 __last2) |
| 1358 | { |
| 1359 | while (__first1 != __last1) |
| 1360 | { |
| 1361 | if (__first2 == __last2) |
| 1362 | return +1; |
| 1363 | if (*__first1 < *__first2) |
| 1364 | return -1; |
| 1365 | if (*__first2 < *__first1) |
| 1366 | return +1; |
| 1367 | ++__first1; |
| 1368 | ++__first2; |
| 1369 | } |
| 1370 | return int(__first2 == __last2) - 1; |
| 1371 | } |
| 1372 | }; |
| 1373 | |
| 1374 | template<> |
| 1375 | struct __lexicographical_compare<true> |
| 1376 | { |
| 1377 | template<typename _Tp, typename _Up> |
| 1378 | _GLIBCXX20_CONSTEXPR |
| 1379 | static bool |
| 1380 | __lc(const _Tp* __first1, const _Tp* __last1, |
| 1381 | const _Up* __first2, const _Up* __last2) |
| 1382 | { return __3way(__first1, __last1, __first2, __last2) < 0; } |
| 1383 | |
| 1384 | template<typename _Tp, typename _Up> |
| 1385 | _GLIBCXX20_CONSTEXPR |
| 1386 | static ptrdiff_t |
| 1387 | __3way(const _Tp* __first1, const _Tp* __last1, |
| 1388 | const _Up* __first2, const _Up* __last2) |
| 1389 | { |
| 1390 | const size_t __len1 = __last1 - __first1; |
| 1391 | const size_t __len2 = __last2 - __first2; |
| 1392 | if (const size_t __len = std::min(a: __len1, b: __len2)) |
| 1393 | if (int __result = std::__memcmp(__first1, __first2, __len)) |
| 1394 | return __result; |
| 1395 | return ptrdiff_t(__len1 - __len2); |
| 1396 | } |
| 1397 | }; |
| 1398 | |
| 1399 | template<typename _II1, typename _II2> |
| 1400 | _GLIBCXX20_CONSTEXPR |
| 1401 | inline bool |
| 1402 | __lexicographical_compare_aux1(_II1 __first1, _II1 __last1, |
| 1403 | _II2 __first2, _II2 __last2) |
| 1404 | { |
| 1405 | typedef typename iterator_traits<_II1>::value_type _ValueType1; |
| 1406 | typedef typename iterator_traits<_II2>::value_type _ValueType2; |
| 1407 | const bool __simple = |
| 1408 | (__is_memcmp_ordered_with<_ValueType1, _ValueType2>::__value |
| 1409 | && __is_pointer<_II1>::__value |
| 1410 | && __is_pointer<_II2>::__value |
| 1411 | #if __cplusplus > 201703L && __glibcxx_concepts |
| 1412 | // For C++20 iterator_traits<volatile T*>::value_type is non-volatile |
| 1413 | // so __is_byte<T> could be true, but we can't use memcmp with |
| 1414 | // volatile data. |
| 1415 | && !is_volatile_v<remove_reference_t<iter_reference_t<_II1>>> |
| 1416 | && !is_volatile_v<remove_reference_t<iter_reference_t<_II2>>> |
| 1417 | #endif |
| 1418 | ); |
| 1419 | |
| 1420 | return std::__lexicographical_compare<__simple>::__lc(__first1, __last1, |
| 1421 | __first2, __last2); |
| 1422 | } |
| 1423 | |
| 1424 | template<typename _Tp1, typename _Ref1, typename _Ptr1, |
| 1425 | typename _Tp2> |
| 1426 | bool |
| 1427 | __lexicographical_compare_aux1( |
| 1428 | _GLIBCXX_STD_C::_Deque_iterator<_Tp1, _Ref1, _Ptr1>, |
| 1429 | _GLIBCXX_STD_C::_Deque_iterator<_Tp1, _Ref1, _Ptr1>, |
| 1430 | _Tp2*, _Tp2*); |
| 1431 | |
| 1432 | template<typename _Tp1, |
| 1433 | typename _Tp2, typename _Ref2, typename _Ptr2> |
| 1434 | bool |
| 1435 | __lexicographical_compare_aux1(_Tp1*, _Tp1*, |
| 1436 | _GLIBCXX_STD_C::_Deque_iterator<_Tp2, _Ref2, _Ptr2>, |
| 1437 | _GLIBCXX_STD_C::_Deque_iterator<_Tp2, _Ref2, _Ptr2>); |
| 1438 | |
| 1439 | template<typename _Tp1, typename _Ref1, typename _Ptr1, |
| 1440 | typename _Tp2, typename _Ref2, typename _Ptr2> |
| 1441 | bool |
| 1442 | __lexicographical_compare_aux1( |
| 1443 | _GLIBCXX_STD_C::_Deque_iterator<_Tp1, _Ref1, _Ptr1>, |
| 1444 | _GLIBCXX_STD_C::_Deque_iterator<_Tp1, _Ref1, _Ptr1>, |
| 1445 | _GLIBCXX_STD_C::_Deque_iterator<_Tp2, _Ref2, _Ptr2>, |
| 1446 | _GLIBCXX_STD_C::_Deque_iterator<_Tp2, _Ref2, _Ptr2>); |
| 1447 | |
| 1448 | template<typename _II1, typename _II2> |
| 1449 | _GLIBCXX20_CONSTEXPR |
| 1450 | inline bool |
| 1451 | __lexicographical_compare_aux(_II1 __first1, _II1 __last1, |
| 1452 | _II2 __first2, _II2 __last2) |
| 1453 | { |
| 1454 | return std::__lexicographical_compare_aux1(std::__niter_base(__first1), |
| 1455 | std::__niter_base(__last1), |
| 1456 | std::__niter_base(__first2), |
| 1457 | std::__niter_base(__last2)); |
| 1458 | } |
| 1459 | |
| 1460 | template<typename _Iter1, typename _Seq1, typename _Cat1, |
| 1461 | typename _II2> |
| 1462 | _GLIBCXX20_CONSTEXPR |
| 1463 | bool |
| 1464 | __lexicographical_compare_aux( |
| 1465 | const ::__gnu_debug::_Safe_iterator<_Iter1, _Seq1, _Cat1>&, |
| 1466 | const ::__gnu_debug::_Safe_iterator<_Iter1, _Seq1, _Cat1>&, |
| 1467 | _II2, _II2); |
| 1468 | |
| 1469 | template<typename _II1, |
| 1470 | typename _Iter2, typename _Seq2, typename _Cat2> |
| 1471 | _GLIBCXX20_CONSTEXPR |
| 1472 | bool |
| 1473 | __lexicographical_compare_aux( |
| 1474 | _II1, _II1, |
| 1475 | const ::__gnu_debug::_Safe_iterator<_Iter2, _Seq2, _Cat2>&, |
| 1476 | const ::__gnu_debug::_Safe_iterator<_Iter2, _Seq2, _Cat2>&); |
| 1477 | |
| 1478 | template<typename _Iter1, typename _Seq1, typename _Cat1, |
| 1479 | typename _Iter2, typename _Seq2, typename _Cat2> |
| 1480 | _GLIBCXX20_CONSTEXPR |
| 1481 | bool |
| 1482 | __lexicographical_compare_aux( |
| 1483 | const ::__gnu_debug::_Safe_iterator<_Iter1, _Seq1, _Cat1>&, |
| 1484 | const ::__gnu_debug::_Safe_iterator<_Iter1, _Seq1, _Cat1>&, |
| 1485 | const ::__gnu_debug::_Safe_iterator<_Iter2, _Seq2, _Cat2>&, |
| 1486 | const ::__gnu_debug::_Safe_iterator<_Iter2, _Seq2, _Cat2>&); |
| 1487 | |
| 1488 | template<typename _ForwardIterator, typename _Tp, typename _Compare> |
| 1489 | _GLIBCXX20_CONSTEXPR |
| 1490 | _ForwardIterator |
| 1491 | __lower_bound(_ForwardIterator __first, _ForwardIterator __last, |
| 1492 | const _Tp& __val, _Compare __comp) |
| 1493 | { |
| 1494 | typedef typename iterator_traits<_ForwardIterator>::difference_type |
| 1495 | _DistanceType; |
| 1496 | |
| 1497 | _DistanceType __len = std::distance(__first, __last); |
| 1498 | |
| 1499 | while (__len > 0) |
| 1500 | { |
| 1501 | _DistanceType __half = __len >> 1; |
| 1502 | _ForwardIterator __middle = __first; |
| 1503 | std::advance(__middle, __half); |
| 1504 | if (__comp(__middle, __val)) |
| 1505 | { |
| 1506 | __first = __middle; |
| 1507 | ++__first; |
| 1508 | __len = __len - __half - 1; |
| 1509 | } |
| 1510 | else |
| 1511 | __len = __half; |
| 1512 | } |
| 1513 | return __first; |
| 1514 | } |
| 1515 | |
| 1516 | /** |
| 1517 | * @brief Finds the first position in which @a val could be inserted |
| 1518 | * without changing the ordering. |
| 1519 | * @param __first An iterator. |
| 1520 | * @param __last Another iterator. |
| 1521 | * @param __val The search term. |
| 1522 | * @return An iterator pointing to the first element <em>not less |
| 1523 | * than</em> @a val, or end() if every element is less than |
| 1524 | * @a val. |
| 1525 | * @ingroup binary_search_algorithms |
| 1526 | */ |
| 1527 | template<typename _ForwardIterator, typename _Tp> |
| 1528 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
| 1529 | inline _ForwardIterator |
| 1530 | lower_bound(_ForwardIterator __first, _ForwardIterator __last, |
| 1531 | const _Tp& __val) |
| 1532 | { |
| 1533 | // concept requirements |
| 1534 | __glibcxx_function_requires(_ForwardIteratorConcept<_ForwardIterator>) |
| 1535 | __glibcxx_function_requires(_LessThanOpConcept< |
| 1536 | typename iterator_traits<_ForwardIterator>::value_type, _Tp>) |
| 1537 | __glibcxx_requires_partitioned_lower(__first, __last, __val); |
| 1538 | |
| 1539 | return std::__lower_bound(__first, __last, __val, |
| 1540 | __gnu_cxx::__ops::__iter_less_val()); |
| 1541 | } |
| 1542 | |
| 1543 | /// This is a helper function for the sort routines and for random.tcc. |
| 1544 | // Precondition: __n > 0. |
| 1545 | template<typename _Tp> |
| 1546 | inline _GLIBCXX_CONSTEXPR _Tp |
| 1547 | __lg(_Tp __n) |
| 1548 | { |
| 1549 | #if __cplusplus >= 201402L |
| 1550 | return std::__bit_width(make_unsigned_t<_Tp>(__n)) - 1; |
| 1551 | #else |
| 1552 | #pragma GCC diagnostic push |
| 1553 | #pragma GCC diagnostic ignored "-Wlong-long" |
| 1554 | // Use +__n so it promotes to at least int. |
| 1555 | return (sizeof(+__n) * __CHAR_BIT__ - 1) |
| 1556 | - (sizeof(+__n) == sizeof(long long) |
| 1557 | ? __builtin_clzll(+__n) |
| 1558 | : (sizeof(+__n) == sizeof(long) |
| 1559 | ? __builtin_clzl(+__n) |
| 1560 | : __builtin_clz(+__n))); |
| 1561 | #pragma GCC diagnostic pop |
| 1562 | #endif |
| 1563 | } |
| 1564 | |
| 1565 | _GLIBCXX_BEGIN_NAMESPACE_ALGO |
| 1566 | |
| 1567 | /** |
| 1568 | * @brief Tests a range for element-wise equality. |
| 1569 | * @ingroup non_mutating_algorithms |
| 1570 | * @param __first1 An input iterator. |
| 1571 | * @param __last1 An input iterator. |
| 1572 | * @param __first2 An input iterator. |
| 1573 | * @return A boolean true or false. |
| 1574 | * |
| 1575 | * This compares the elements of two ranges using @c == and returns true or |
| 1576 | * false depending on whether all of the corresponding elements of the |
| 1577 | * ranges are equal. |
| 1578 | */ |
| 1579 | template<typename _II1, typename _II2> |
| 1580 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
| 1581 | inline bool |
| 1582 | equal(_II1 __first1, _II1 __last1, _II2 __first2) |
| 1583 | { |
| 1584 | // concept requirements |
| 1585 | __glibcxx_function_requires(_InputIteratorConcept<_II1>) |
| 1586 | __glibcxx_function_requires(_InputIteratorConcept<_II2>) |
| 1587 | __glibcxx_function_requires(_EqualOpConcept< |
| 1588 | typename iterator_traits<_II1>::value_type, |
| 1589 | typename iterator_traits<_II2>::value_type>) |
| 1590 | __glibcxx_requires_can_increment_range(__first1, __last1, __first2); |
| 1591 | |
| 1592 | return std::__equal_aux(__first1, __last1, __first2); |
| 1593 | } |
| 1594 | |
| 1595 | /** |
| 1596 | * @brief Tests a range for element-wise equality. |
| 1597 | * @ingroup non_mutating_algorithms |
| 1598 | * @param __first1 An input iterator. |
| 1599 | * @param __last1 An input iterator. |
| 1600 | * @param __first2 An input iterator. |
| 1601 | * @param __binary_pred A binary predicate @link functors |
| 1602 | * functor@endlink. |
| 1603 | * @return A boolean true or false. |
| 1604 | * |
| 1605 | * This compares the elements of two ranges using the binary_pred |
| 1606 | * parameter, and returns true or |
| 1607 | * false depending on whether all of the corresponding elements of the |
| 1608 | * ranges are equal. |
| 1609 | */ |
| 1610 | template<typename _IIter1, typename _IIter2, typename _BinaryPredicate> |
| 1611 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
| 1612 | inline bool |
| 1613 | equal(_IIter1 __first1, _IIter1 __last1, |
| 1614 | _IIter2 __first2, _BinaryPredicate __binary_pred) |
| 1615 | { |
| 1616 | // concept requirements |
| 1617 | __glibcxx_function_requires(_InputIteratorConcept<_IIter1>) |
| 1618 | __glibcxx_function_requires(_InputIteratorConcept<_IIter2>) |
| 1619 | __glibcxx_requires_valid_range(__first1, __last1); |
| 1620 | |
| 1621 | for (; __first1 != __last1; ++__first1, (void)++__first2) |
| 1622 | if (!bool(__binary_pred(*__first1, *__first2))) |
| 1623 | return false; |
| 1624 | return true; |
| 1625 | } |
| 1626 | |
| 1627 | #if __cplusplus >= 201103L |
| 1628 | #pragma GCC diagnostic push |
| 1629 | #pragma GCC diagnostic ignored "-Wc++17-extensions" // if constexpr |
| 1630 | |
| 1631 | // 4-iterator version of std::equal<It1, It2> for use in C++11. |
| 1632 | template<typename _II1, typename _II2> |
| 1633 | _GLIBCXX20_CONSTEXPR |
| 1634 | inline bool |
| 1635 | __equal4(_II1 __first1, _II1 __last1, _II2 __first2, _II2 __last2) |
| 1636 | { |
| 1637 | using _RATag = random_access_iterator_tag; |
| 1638 | using _Cat1 = typename iterator_traits<_II1>::iterator_category; |
| 1639 | using _Cat2 = typename iterator_traits<_II2>::iterator_category; |
| 1640 | using _RAIters = __and_<is_same<_Cat1, _RATag>, is_same<_Cat2, _RATag>>; |
| 1641 | if constexpr (_RAIters::value) |
| 1642 | { |
| 1643 | if ((__last1 - __first1) != (__last2 - __first2)) |
| 1644 | return false; |
| 1645 | return _GLIBCXX_STD_A::equal(__first1, __last1, __first2); |
| 1646 | } |
| 1647 | else |
| 1648 | { |
| 1649 | for (; __first1 != __last1 && __first2 != __last2; |
| 1650 | ++__first1, (void)++__first2) |
| 1651 | if (!(*__first1 == *__first2)) |
| 1652 | return false; |
| 1653 | return __first1 == __last1 && __first2 == __last2; |
| 1654 | } |
| 1655 | } |
| 1656 | |
| 1657 | // 4-iterator version of std::equal<It1, It2, BinaryPred> for use in C++11. |
| 1658 | template<typename _II1, typename _II2, typename _BinaryPredicate> |
| 1659 | _GLIBCXX20_CONSTEXPR |
| 1660 | inline bool |
| 1661 | __equal4(_II1 __first1, _II1 __last1, _II2 __first2, _II2 __last2, |
| 1662 | _BinaryPredicate __binary_pred) |
| 1663 | { |
| 1664 | using _RATag = random_access_iterator_tag; |
| 1665 | using _Cat1 = typename iterator_traits<_II1>::iterator_category; |
| 1666 | using _Cat2 = typename iterator_traits<_II2>::iterator_category; |
| 1667 | using _RAIters = __and_<is_same<_Cat1, _RATag>, is_same<_Cat2, _RATag>>; |
| 1668 | if constexpr (_RAIters::value) |
| 1669 | { |
| 1670 | if ((__last1 - __first1) != (__last2 - __first2)) |
| 1671 | return false; |
| 1672 | return _GLIBCXX_STD_A::equal(__first1, __last1, __first2, |
| 1673 | __binary_pred); |
| 1674 | } |
| 1675 | else |
| 1676 | { |
| 1677 | for (; __first1 != __last1 && __first2 != __last2; |
| 1678 | ++__first1, (void)++__first2) |
| 1679 | if (!bool(__binary_pred(*__first1, *__first2))) |
| 1680 | return false; |
| 1681 | return __first1 == __last1 && __first2 == __last2; |
| 1682 | } |
| 1683 | } |
| 1684 | #pragma GCC diagnostic pop |
| 1685 | #endif // C++11 |
| 1686 | |
| 1687 | #ifdef __glibcxx_robust_nonmodifying_seq_ops // C++ >= 14 |
| 1688 | /** |
| 1689 | * @brief Tests a range for element-wise equality. |
| 1690 | * @ingroup non_mutating_algorithms |
| 1691 | * @param __first1 An input iterator. |
| 1692 | * @param __last1 An input iterator. |
| 1693 | * @param __first2 An input iterator. |
| 1694 | * @param __last2 An input iterator. |
| 1695 | * @return A boolean true or false. |
| 1696 | * |
| 1697 | * This compares the elements of two ranges using @c == and returns true or |
| 1698 | * false depending on whether all of the corresponding elements of the |
| 1699 | * ranges are equal. |
| 1700 | */ |
| 1701 | template<typename _II1, typename _II2> |
| 1702 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
| 1703 | inline bool |
| 1704 | equal(_II1 __first1, _II1 __last1, _II2 __first2, _II2 __last2) |
| 1705 | { |
| 1706 | // concept requirements |
| 1707 | __glibcxx_function_requires(_InputIteratorConcept<_II1>) |
| 1708 | __glibcxx_function_requires(_InputIteratorConcept<_II2>) |
| 1709 | __glibcxx_function_requires(_EqualOpConcept< |
| 1710 | typename iterator_traits<_II1>::value_type, |
| 1711 | typename iterator_traits<_II2>::value_type>) |
| 1712 | __glibcxx_requires_valid_range(__first1, __last1); |
| 1713 | __glibcxx_requires_valid_range(__first2, __last2); |
| 1714 | |
| 1715 | return _GLIBCXX_STD_A::__equal4(__first1, __last1, __first2, __last2); |
| 1716 | } |
| 1717 | |
| 1718 | /** |
| 1719 | * @brief Tests a range for element-wise equality. |
| 1720 | * @ingroup non_mutating_algorithms |
| 1721 | * @param __first1 An input iterator. |
| 1722 | * @param __last1 An input iterator. |
| 1723 | * @param __first2 An input iterator. |
| 1724 | * @param __last2 An input iterator. |
| 1725 | * @param __binary_pred A binary predicate @link functors |
| 1726 | * functor@endlink. |
| 1727 | * @return A boolean true or false. |
| 1728 | * |
| 1729 | * This compares the elements of two ranges using the binary_pred |
| 1730 | * parameter, and returns true or |
| 1731 | * false depending on whether all of the corresponding elements of the |
| 1732 | * ranges are equal. |
| 1733 | */ |
| 1734 | template<typename _IIter1, typename _IIter2, typename _BinaryPredicate> |
| 1735 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
| 1736 | inline bool |
| 1737 | equal(_IIter1 __first1, _IIter1 __last1, |
| 1738 | _IIter2 __first2, _IIter2 __last2, _BinaryPredicate __binary_pred) |
| 1739 | { |
| 1740 | // concept requirements |
| 1741 | __glibcxx_function_requires(_InputIteratorConcept<_IIter1>) |
| 1742 | __glibcxx_function_requires(_InputIteratorConcept<_IIter2>) |
| 1743 | __glibcxx_requires_valid_range(__first1, __last1); |
| 1744 | __glibcxx_requires_valid_range(__first2, __last2); |
| 1745 | |
| 1746 | return _GLIBCXX_STD_A::__equal4(__first1, __last1, __first2, __last2, |
| 1747 | __binary_pred); |
| 1748 | } |
| 1749 | #endif // __glibcxx_robust_nonmodifying_seq_ops |
| 1750 | |
| 1751 | /** |
| 1752 | * @brief Performs @b dictionary comparison on ranges. |
| 1753 | * @ingroup sorting_algorithms |
| 1754 | * @param __first1 An input iterator. |
| 1755 | * @param __last1 An input iterator. |
| 1756 | * @param __first2 An input iterator. |
| 1757 | * @param __last2 An input iterator. |
| 1758 | * @return A boolean true or false. |
| 1759 | * |
| 1760 | * <em>Returns true if the sequence of elements defined by the range |
| 1761 | * [first1,last1) is lexicographically less than the sequence of elements |
| 1762 | * defined by the range [first2,last2). Returns false otherwise.</em> |
| 1763 | * (Quoted from [25.3.8]/1.) If the iterators are all character pointers, |
| 1764 | * then this is an inline call to @c memcmp. |
| 1765 | */ |
| 1766 | template<typename _II1, typename _II2> |
| 1767 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
| 1768 | inline bool |
| 1769 | lexicographical_compare(_II1 __first1, _II1 __last1, |
| 1770 | _II2 __first2, _II2 __last2) |
| 1771 | { |
| 1772 | #ifdef _GLIBCXX_CONCEPT_CHECKS |
| 1773 | // concept requirements |
| 1774 | typedef typename iterator_traits<_II1>::value_type _ValueType1; |
| 1775 | typedef typename iterator_traits<_II2>::value_type _ValueType2; |
| 1776 | #endif |
| 1777 | __glibcxx_function_requires(_InputIteratorConcept<_II1>) |
| 1778 | __glibcxx_function_requires(_InputIteratorConcept<_II2>) |
| 1779 | __glibcxx_function_requires(_LessThanOpConcept<_ValueType1, _ValueType2>) |
| 1780 | __glibcxx_function_requires(_LessThanOpConcept<_ValueType2, _ValueType1>) |
| 1781 | __glibcxx_requires_valid_range(__first1, __last1); |
| 1782 | __glibcxx_requires_valid_range(__first2, __last2); |
| 1783 | |
| 1784 | return std::__lexicographical_compare_aux(__first1, __last1, |
| 1785 | __first2, __last2); |
| 1786 | } |
| 1787 | |
| 1788 | /** |
| 1789 | * @brief Performs @b dictionary comparison on ranges. |
| 1790 | * @ingroup sorting_algorithms |
| 1791 | * @param __first1 An input iterator. |
| 1792 | * @param __last1 An input iterator. |
| 1793 | * @param __first2 An input iterator. |
| 1794 | * @param __last2 An input iterator. |
| 1795 | * @param __comp A @link comparison_functors comparison functor@endlink. |
| 1796 | * @return A boolean true or false. |
| 1797 | * |
| 1798 | * The same as the four-parameter @c lexicographical_compare, but uses the |
| 1799 | * comp parameter instead of @c <. |
| 1800 | */ |
| 1801 | template<typename _II1, typename _II2, typename _Compare> |
| 1802 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
| 1803 | inline bool |
| 1804 | lexicographical_compare(_II1 __first1, _II1 __last1, |
| 1805 | _II2 __first2, _II2 __last2, _Compare __comp) |
| 1806 | { |
| 1807 | // concept requirements |
| 1808 | __glibcxx_function_requires(_InputIteratorConcept<_II1>) |
| 1809 | __glibcxx_function_requires(_InputIteratorConcept<_II2>) |
| 1810 | __glibcxx_requires_valid_range(__first1, __last1); |
| 1811 | __glibcxx_requires_valid_range(__first2, __last2); |
| 1812 | |
| 1813 | return std::__lexicographical_compare_impl |
| 1814 | (__first1, __last1, __first2, __last2, |
| 1815 | __gnu_cxx::__ops::__iter_comp_iter(__comp)); |
| 1816 | } |
| 1817 | |
| 1818 | #if __cpp_lib_three_way_comparison |
| 1819 | // Both iterators refer to contiguous ranges of unsigned narrow characters, |
| 1820 | // or std::byte, or big-endian unsigned integers, suitable for comparison |
| 1821 | // using memcmp. |
| 1822 | template<typename _Iter1, typename _Iter2> |
| 1823 | concept __memcmp_ordered_with |
| 1824 | = (__is_memcmp_ordered_with<iter_value_t<_Iter1>, |
| 1825 | iter_value_t<_Iter2>>::__value) |
| 1826 | && contiguous_iterator<_Iter1> && contiguous_iterator<_Iter2>; |
| 1827 | |
| 1828 | // Return a struct with two members, initialized to the smaller of x and y |
| 1829 | // (or x if they compare equal) and the result of the comparison x <=> y. |
| 1830 | template<typename _Tp> |
| 1831 | constexpr auto |
| 1832 | __min_cmp(_Tp __x, _Tp __y) |
| 1833 | { |
| 1834 | struct _Res { |
| 1835 | _Tp _M_min; |
| 1836 | decltype(__x <=> __y) _M_cmp; |
| 1837 | }; |
| 1838 | auto __c = __x <=> __y; |
| 1839 | if (__c > 0) |
| 1840 | return _Res{__y, __c}; |
| 1841 | return _Res{__x, __c}; |
| 1842 | } |
| 1843 | |
| 1844 | /** |
| 1845 | * @brief Performs dictionary comparison on ranges. |
| 1846 | * @ingroup sorting_algorithms |
| 1847 | * @param __first1 An input iterator. |
| 1848 | * @param __last1 An input iterator. |
| 1849 | * @param __first2 An input iterator. |
| 1850 | * @param __last2 An input iterator. |
| 1851 | * @param __comp A @link comparison_functors comparison functor@endlink. |
| 1852 | * @return The comparison category that `__comp(*__first1, *__first2)` |
| 1853 | * returns. |
| 1854 | */ |
| 1855 | template<typename _InputIter1, typename _InputIter2, typename _Comp> |
| 1856 | [[nodiscard]] constexpr auto |
| 1857 | lexicographical_compare_three_way(_InputIter1 __first1, |
| 1858 | _InputIter1 __last1, |
| 1859 | _InputIter2 __first2, |
| 1860 | _InputIter2 __last2, |
| 1861 | _Comp __comp) |
| 1862 | -> decltype(__comp(*__first1, *__first2)) |
| 1863 | { |
| 1864 | // concept requirements |
| 1865 | __glibcxx_function_requires(_InputIteratorConcept<_InputIter1>) |
| 1866 | __glibcxx_function_requires(_InputIteratorConcept<_InputIter2>) |
| 1867 | __glibcxx_requires_valid_range(__first1, __last1); |
| 1868 | __glibcxx_requires_valid_range(__first2, __last2); |
| 1869 | |
| 1870 | using _Cat = decltype(__comp(*__first1, *__first2)); |
| 1871 | static_assert(same_as<common_comparison_category_t<_Cat>, _Cat>); |
| 1872 | |
| 1873 | if (!std::__is_constant_evaluated()) |
| 1874 | if constexpr (same_as<_Comp, __detail::_Synth3way> |
| 1875 | || same_as<_Comp, compare_three_way>) |
| 1876 | if constexpr (__memcmp_ordered_with<_InputIter1, _InputIter2>) |
| 1877 | { |
| 1878 | const auto [__len, __lencmp] = _GLIBCXX_STD_A:: |
| 1879 | __min_cmp(__last1 - __first1, __last2 - __first2); |
| 1880 | if (__len) |
| 1881 | { |
| 1882 | const auto __blen = __len * sizeof(*__first1); |
| 1883 | const auto __c |
| 1884 | = __builtin_memcmp(&*__first1, &*__first2, __blen) <=> 0; |
| 1885 | if (__c != 0) |
| 1886 | return __c; |
| 1887 | } |
| 1888 | return __lencmp; |
| 1889 | } |
| 1890 | |
| 1891 | while (__first1 != __last1) |
| 1892 | { |
| 1893 | if (__first2 == __last2) |
| 1894 | return strong_ordering::greater; |
| 1895 | if (auto __cmp = __comp(*__first1, *__first2); __cmp != 0) |
| 1896 | return __cmp; |
| 1897 | ++__first1; |
| 1898 | ++__first2; |
| 1899 | } |
| 1900 | return (__first2 == __last2) <=> true; // See PR 94006 |
| 1901 | } |
| 1902 | |
| 1903 | template<typename _InputIter1, typename _InputIter2> |
| 1904 | constexpr auto |
| 1905 | lexicographical_compare_three_way(_InputIter1 __first1, |
| 1906 | _InputIter1 __last1, |
| 1907 | _InputIter2 __first2, |
| 1908 | _InputIter2 __last2) |
| 1909 | { |
| 1910 | return _GLIBCXX_STD_A:: |
| 1911 | lexicographical_compare_three_way(__first1, __last1, __first2, __last2, |
| 1912 | compare_three_way{}); |
| 1913 | } |
| 1914 | #endif // three_way_comparison |
| 1915 | |
| 1916 | template<typename _InputIterator1, typename _InputIterator2, |
| 1917 | typename _BinaryPredicate> |
| 1918 | _GLIBCXX20_CONSTEXPR |
| 1919 | pair<_InputIterator1, _InputIterator2> |
| 1920 | __mismatch(_InputIterator1 __first1, _InputIterator1 __last1, |
| 1921 | _InputIterator2 __first2, _BinaryPredicate __binary_pred) |
| 1922 | { |
| 1923 | while (__first1 != __last1 && __binary_pred(__first1, __first2)) |
| 1924 | { |
| 1925 | ++__first1; |
| 1926 | ++__first2; |
| 1927 | } |
| 1928 | return pair<_InputIterator1, _InputIterator2>(__first1, __first2); |
| 1929 | } |
| 1930 | |
| 1931 | /** |
| 1932 | * @brief Finds the places in ranges which don't match. |
| 1933 | * @ingroup non_mutating_algorithms |
| 1934 | * @param __first1 An input iterator. |
| 1935 | * @param __last1 An input iterator. |
| 1936 | * @param __first2 An input iterator. |
| 1937 | * @return A pair of iterators pointing to the first mismatch. |
| 1938 | * |
| 1939 | * This compares the elements of two ranges using @c == and returns a pair |
| 1940 | * of iterators. The first iterator points into the first range, the |
| 1941 | * second iterator points into the second range, and the elements pointed |
| 1942 | * to by the iterators are not equal. |
| 1943 | */ |
| 1944 | template<typename _InputIterator1, typename _InputIterator2> |
| 1945 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
| 1946 | inline pair<_InputIterator1, _InputIterator2> |
| 1947 | mismatch(_InputIterator1 __first1, _InputIterator1 __last1, |
| 1948 | _InputIterator2 __first2) |
| 1949 | { |
| 1950 | // concept requirements |
| 1951 | __glibcxx_function_requires(_InputIteratorConcept<_InputIterator1>) |
| 1952 | __glibcxx_function_requires(_InputIteratorConcept<_InputIterator2>) |
| 1953 | __glibcxx_function_requires(_EqualOpConcept< |
| 1954 | typename iterator_traits<_InputIterator1>::value_type, |
| 1955 | typename iterator_traits<_InputIterator2>::value_type>) |
| 1956 | __glibcxx_requires_valid_range(__first1, __last1); |
| 1957 | |
| 1958 | return _GLIBCXX_STD_A::__mismatch(__first1, __last1, __first2, |
| 1959 | __gnu_cxx::__ops::__iter_equal_to_iter()); |
| 1960 | } |
| 1961 | |
| 1962 | /** |
| 1963 | * @brief Finds the places in ranges which don't match. |
| 1964 | * @ingroup non_mutating_algorithms |
| 1965 | * @param __first1 An input iterator. |
| 1966 | * @param __last1 An input iterator. |
| 1967 | * @param __first2 An input iterator. |
| 1968 | * @param __binary_pred A binary predicate @link functors |
| 1969 | * functor@endlink. |
| 1970 | * @return A pair of iterators pointing to the first mismatch. |
| 1971 | * |
| 1972 | * This compares the elements of two ranges using the binary_pred |
| 1973 | * parameter, and returns a pair |
| 1974 | * of iterators. The first iterator points into the first range, the |
| 1975 | * second iterator points into the second range, and the elements pointed |
| 1976 | * to by the iterators are not equal. |
| 1977 | */ |
| 1978 | template<typename _InputIterator1, typename _InputIterator2, |
| 1979 | typename _BinaryPredicate> |
| 1980 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
| 1981 | inline pair<_InputIterator1, _InputIterator2> |
| 1982 | mismatch(_InputIterator1 __first1, _InputIterator1 __last1, |
| 1983 | _InputIterator2 __first2, _BinaryPredicate __binary_pred) |
| 1984 | { |
| 1985 | // concept requirements |
| 1986 | __glibcxx_function_requires(_InputIteratorConcept<_InputIterator1>) |
| 1987 | __glibcxx_function_requires(_InputIteratorConcept<_InputIterator2>) |
| 1988 | __glibcxx_requires_valid_range(__first1, __last1); |
| 1989 | |
| 1990 | return _GLIBCXX_STD_A::__mismatch(__first1, __last1, __first2, |
| 1991 | __gnu_cxx::__ops::__iter_comp_iter(__binary_pred)); |
| 1992 | } |
| 1993 | |
| 1994 | #if __glibcxx_robust_nonmodifying_seq_ops // C++ >= 14 |
| 1995 | template<typename _InputIterator1, typename _InputIterator2, |
| 1996 | typename _BinaryPredicate> |
| 1997 | _GLIBCXX20_CONSTEXPR |
| 1998 | pair<_InputIterator1, _InputIterator2> |
| 1999 | __mismatch(_InputIterator1 __first1, _InputIterator1 __last1, |
| 2000 | _InputIterator2 __first2, _InputIterator2 __last2, |
| 2001 | _BinaryPredicate __binary_pred) |
| 2002 | { |
| 2003 | while (__first1 != __last1 && __first2 != __last2 |
| 2004 | && __binary_pred(__first1, __first2)) |
| 2005 | { |
| 2006 | ++__first1; |
| 2007 | ++__first2; |
| 2008 | } |
| 2009 | return pair<_InputIterator1, _InputIterator2>(__first1, __first2); |
| 2010 | } |
| 2011 | |
| 2012 | /** |
| 2013 | * @brief Finds the places in ranges which don't match. |
| 2014 | * @ingroup non_mutating_algorithms |
| 2015 | * @param __first1 An input iterator. |
| 2016 | * @param __last1 An input iterator. |
| 2017 | * @param __first2 An input iterator. |
| 2018 | * @param __last2 An input iterator. |
| 2019 | * @return A pair of iterators pointing to the first mismatch. |
| 2020 | * |
| 2021 | * This compares the elements of two ranges using @c == and returns a pair |
| 2022 | * of iterators. The first iterator points into the first range, the |
| 2023 | * second iterator points into the second range, and the elements pointed |
| 2024 | * to by the iterators are not equal. |
| 2025 | */ |
| 2026 | template<typename _InputIterator1, typename _InputIterator2> |
| 2027 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
| 2028 | inline pair<_InputIterator1, _InputIterator2> |
| 2029 | mismatch(_InputIterator1 __first1, _InputIterator1 __last1, |
| 2030 | _InputIterator2 __first2, _InputIterator2 __last2) |
| 2031 | { |
| 2032 | // concept requirements |
| 2033 | __glibcxx_function_requires(_InputIteratorConcept<_InputIterator1>) |
| 2034 | __glibcxx_function_requires(_InputIteratorConcept<_InputIterator2>) |
| 2035 | __glibcxx_function_requires(_EqualOpConcept< |
| 2036 | typename iterator_traits<_InputIterator1>::value_type, |
| 2037 | typename iterator_traits<_InputIterator2>::value_type>) |
| 2038 | __glibcxx_requires_valid_range(__first1, __last1); |
| 2039 | __glibcxx_requires_valid_range(__first2, __last2); |
| 2040 | |
| 2041 | return _GLIBCXX_STD_A::__mismatch(__first1, __last1, __first2, __last2, |
| 2042 | __gnu_cxx::__ops::__iter_equal_to_iter()); |
| 2043 | } |
| 2044 | |
| 2045 | /** |
| 2046 | * @brief Finds the places in ranges which don't match. |
| 2047 | * @ingroup non_mutating_algorithms |
| 2048 | * @param __first1 An input iterator. |
| 2049 | * @param __last1 An input iterator. |
| 2050 | * @param __first2 An input iterator. |
| 2051 | * @param __last2 An input iterator. |
| 2052 | * @param __binary_pred A binary predicate @link functors |
| 2053 | * functor@endlink. |
| 2054 | * @return A pair of iterators pointing to the first mismatch. |
| 2055 | * |
| 2056 | * This compares the elements of two ranges using the binary_pred |
| 2057 | * parameter, and returns a pair |
| 2058 | * of iterators. The first iterator points into the first range, the |
| 2059 | * second iterator points into the second range, and the elements pointed |
| 2060 | * to by the iterators are not equal. |
| 2061 | */ |
| 2062 | template<typename _InputIterator1, typename _InputIterator2, |
| 2063 | typename _BinaryPredicate> |
| 2064 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
| 2065 | inline pair<_InputIterator1, _InputIterator2> |
| 2066 | mismatch(_InputIterator1 __first1, _InputIterator1 __last1, |
| 2067 | _InputIterator2 __first2, _InputIterator2 __last2, |
| 2068 | _BinaryPredicate __binary_pred) |
| 2069 | { |
| 2070 | // concept requirements |
| 2071 | __glibcxx_function_requires(_InputIteratorConcept<_InputIterator1>) |
| 2072 | __glibcxx_function_requires(_InputIteratorConcept<_InputIterator2>) |
| 2073 | __glibcxx_requires_valid_range(__first1, __last1); |
| 2074 | __glibcxx_requires_valid_range(__first2, __last2); |
| 2075 | |
| 2076 | return _GLIBCXX_STD_A::__mismatch(__first1, __last1, __first2, __last2, |
| 2077 | __gnu_cxx::__ops::__iter_comp_iter(__binary_pred)); |
| 2078 | } |
| 2079 | #endif |
| 2080 | |
| 2081 | _GLIBCXX_END_NAMESPACE_ALGO |
| 2082 | |
| 2083 | /// This is an overload used by find algos for the Input Iterator case. |
| 2084 | template<typename _InputIterator, typename _Predicate> |
| 2085 | _GLIBCXX20_CONSTEXPR |
| 2086 | inline _InputIterator |
| 2087 | __find_if(_InputIterator __first, _InputIterator __last, |
| 2088 | _Predicate __pred, input_iterator_tag) |
| 2089 | { |
| 2090 | while (__first != __last && !__pred(__first)) |
| 2091 | ++__first; |
| 2092 | return __first; |
| 2093 | } |
| 2094 | |
| 2095 | /// This is an overload used by find algos for the RAI case. |
| 2096 | template<typename _RandomAccessIterator, typename _Predicate> |
| 2097 | _GLIBCXX20_CONSTEXPR |
| 2098 | _RandomAccessIterator |
| 2099 | __find_if(_RandomAccessIterator __first, _RandomAccessIterator __last, |
| 2100 | _Predicate __pred, random_access_iterator_tag) |
| 2101 | { |
| 2102 | typename iterator_traits<_RandomAccessIterator>::difference_type |
| 2103 | __trip_count = (__last - __first) >> 2; |
| 2104 | |
| 2105 | for (; __trip_count > 0; --__trip_count) |
| 2106 | { |
| 2107 | if (__pred(__first)) |
| 2108 | return __first; |
| 2109 | ++__first; |
| 2110 | |
| 2111 | if (__pred(__first)) |
| 2112 | return __first; |
| 2113 | ++__first; |
| 2114 | |
| 2115 | if (__pred(__first)) |
| 2116 | return __first; |
| 2117 | ++__first; |
| 2118 | |
| 2119 | if (__pred(__first)) |
| 2120 | return __first; |
| 2121 | ++__first; |
| 2122 | } |
| 2123 | |
| 2124 | switch (__last - __first) |
| 2125 | { |
| 2126 | case 3: |
| 2127 | if (__pred(__first)) |
| 2128 | return __first; |
| 2129 | ++__first; |
| 2130 | // FALLTHRU |
| 2131 | case 2: |
| 2132 | if (__pred(__first)) |
| 2133 | return __first; |
| 2134 | ++__first; |
| 2135 | // FALLTHRU |
| 2136 | case 1: |
| 2137 | if (__pred(__first)) |
| 2138 | return __first; |
| 2139 | ++__first; |
| 2140 | // FALLTHRU |
| 2141 | case 0: |
| 2142 | default: |
| 2143 | return __last; |
| 2144 | } |
| 2145 | } |
| 2146 | |
| 2147 | template<typename _Iterator, typename _Predicate> |
| 2148 | _GLIBCXX20_CONSTEXPR |
| 2149 | inline _Iterator |
| 2150 | __find_if(_Iterator __first, _Iterator __last, _Predicate __pred) |
| 2151 | { |
| 2152 | return __find_if(__first, __last, __pred, |
| 2153 | std::__iterator_category(__first)); |
| 2154 | } |
| 2155 | |
| 2156 | template<typename _InputIterator, typename _Predicate> |
| 2157 | _GLIBCXX20_CONSTEXPR |
| 2158 | typename iterator_traits<_InputIterator>::difference_type |
| 2159 | __count_if(_InputIterator __first, _InputIterator __last, _Predicate __pred) |
| 2160 | { |
| 2161 | typename iterator_traits<_InputIterator>::difference_type __n = 0; |
| 2162 | for (; __first != __last; ++__first) |
| 2163 | if (__pred(__first)) |
| 2164 | ++__n; |
| 2165 | return __n; |
| 2166 | } |
| 2167 | |
| 2168 | template<typename _ForwardIterator, typename _Predicate> |
| 2169 | _GLIBCXX20_CONSTEXPR |
| 2170 | _ForwardIterator |
| 2171 | __remove_if(_ForwardIterator __first, _ForwardIterator __last, |
| 2172 | _Predicate __pred) |
| 2173 | { |
| 2174 | __first = std::__find_if(__first, __last, __pred); |
| 2175 | if (__first == __last) |
| 2176 | return __first; |
| 2177 | _ForwardIterator __result = __first; |
| 2178 | ++__first; |
| 2179 | for (; __first != __last; ++__first) |
| 2180 | if (!__pred(__first)) |
| 2181 | { |
| 2182 | *__result = _GLIBCXX_MOVE(*__first); |
| 2183 | ++__result; |
| 2184 | } |
| 2185 | return __result; |
| 2186 | } |
| 2187 | |
| 2188 | template<typename _ForwardIterator1, typename _ForwardIterator2, |
| 2189 | typename _BinaryPredicate> |
| 2190 | _GLIBCXX20_CONSTEXPR |
| 2191 | _ForwardIterator1 |
| 2192 | __search(_ForwardIterator1 __first1, _ForwardIterator1 __last1, |
| 2193 | _ForwardIterator2 __first2, _ForwardIterator2 __last2, |
| 2194 | _BinaryPredicate __predicate) |
| 2195 | { |
| 2196 | // Test for empty ranges |
| 2197 | if (__first1 == __last1 || __first2 == __last2) |
| 2198 | return __first1; |
| 2199 | |
| 2200 | // Test for a pattern of length 1. |
| 2201 | _ForwardIterator2 __p1(__first2); |
| 2202 | if (++__p1 == __last2) |
| 2203 | return std::__find_if(__first1, __last1, |
| 2204 | __gnu_cxx::__ops::__iter_comp_iter(__predicate, __first2)); |
| 2205 | |
| 2206 | // General case. |
| 2207 | _ForwardIterator1 __current = __first1; |
| 2208 | |
| 2209 | for (;;) |
| 2210 | { |
| 2211 | __first1 = |
| 2212 | std::__find_if(__first1, __last1, |
| 2213 | __gnu_cxx::__ops::__iter_comp_iter(__predicate, __first2)); |
| 2214 | |
| 2215 | if (__first1 == __last1) |
| 2216 | return __last1; |
| 2217 | |
| 2218 | _ForwardIterator2 __p = __p1; |
| 2219 | __current = __first1; |
| 2220 | if (++__current == __last1) |
| 2221 | return __last1; |
| 2222 | |
| 2223 | while (__predicate(__current, __p)) |
| 2224 | { |
| 2225 | if (++__p == __last2) |
| 2226 | return __first1; |
| 2227 | if (++__current == __last1) |
| 2228 | return __last1; |
| 2229 | } |
| 2230 | ++__first1; |
| 2231 | } |
| 2232 | return __first1; |
| 2233 | } |
| 2234 | |
| 2235 | #if __cplusplus >= 201103L |
| 2236 | template<typename _ForwardIterator1, typename _ForwardIterator2, |
| 2237 | typename _BinaryPredicate> |
| 2238 | _GLIBCXX20_CONSTEXPR |
| 2239 | bool |
| 2240 | __is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1, |
| 2241 | _ForwardIterator2 __first2, _BinaryPredicate __pred) |
| 2242 | { |
| 2243 | // Efficiently compare identical prefixes: O(N) if sequences |
| 2244 | // have the same elements in the same order. |
| 2245 | for (; __first1 != __last1; ++__first1, (void)++__first2) |
| 2246 | if (!__pred(__first1, __first2)) |
| 2247 | break; |
| 2248 | |
| 2249 | if (__first1 == __last1) |
| 2250 | return true; |
| 2251 | |
| 2252 | // Establish __last2 assuming equal ranges by iterating over the |
| 2253 | // rest of the list. |
| 2254 | _ForwardIterator2 __last2 = __first2; |
| 2255 | std::advance(__last2, std::distance(__first1, __last1)); |
| 2256 | for (_ForwardIterator1 __scan = __first1; __scan != __last1; ++__scan) |
| 2257 | { |
| 2258 | if (__scan != std::__find_if(__first1, __scan, |
| 2259 | __gnu_cxx::__ops::__iter_comp_iter(__pred, __scan))) |
| 2260 | continue; // We've seen this one before. |
| 2261 | |
| 2262 | auto __matches |
| 2263 | = std::__count_if(__first2, __last2, |
| 2264 | __gnu_cxx::__ops::__iter_comp_iter(__pred, __scan)); |
| 2265 | if (0 == __matches || |
| 2266 | std::__count_if(__scan, __last1, |
| 2267 | __gnu_cxx::__ops::__iter_comp_iter(__pred, __scan)) |
| 2268 | != __matches) |
| 2269 | return false; |
| 2270 | } |
| 2271 | return true; |
| 2272 | } |
| 2273 | |
| 2274 | /** |
| 2275 | * @brief Checks whether a permutation of the second sequence is equal |
| 2276 | * to the first sequence. |
| 2277 | * @ingroup non_mutating_algorithms |
| 2278 | * @param __first1 Start of first range. |
| 2279 | * @param __last1 End of first range. |
| 2280 | * @param __first2 Start of second range. |
| 2281 | * @return true if there exists a permutation of the elements in the range |
| 2282 | * [__first2, __first2 + (__last1 - __first1)), beginning with |
| 2283 | * ForwardIterator2 begin, such that equal(__first1, __last1, begin) |
| 2284 | * returns true; otherwise, returns false. |
| 2285 | */ |
| 2286 | template<typename _ForwardIterator1, typename _ForwardIterator2> |
| 2287 | _GLIBCXX20_CONSTEXPR |
| 2288 | inline bool |
| 2289 | is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1, |
| 2290 | _ForwardIterator2 __first2) |
| 2291 | { |
| 2292 | // concept requirements |
| 2293 | __glibcxx_function_requires(_ForwardIteratorConcept<_ForwardIterator1>) |
| 2294 | __glibcxx_function_requires(_ForwardIteratorConcept<_ForwardIterator2>) |
| 2295 | __glibcxx_function_requires(_EqualOpConcept< |
| 2296 | typename iterator_traits<_ForwardIterator1>::value_type, |
| 2297 | typename iterator_traits<_ForwardIterator2>::value_type>) |
| 2298 | __glibcxx_requires_valid_range(__first1, __last1); |
| 2299 | |
| 2300 | return std::__is_permutation(__first1, __last1, __first2, |
| 2301 | __gnu_cxx::__ops::__iter_equal_to_iter()); |
| 2302 | } |
| 2303 | #endif // C++11 |
| 2304 | |
| 2305 | _GLIBCXX_BEGIN_NAMESPACE_ALGO |
| 2306 | |
| 2307 | /** |
| 2308 | * @brief Search a sequence for a matching sub-sequence using a predicate. |
| 2309 | * @ingroup non_mutating_algorithms |
| 2310 | * @param __first1 A forward iterator. |
| 2311 | * @param __last1 A forward iterator. |
| 2312 | * @param __first2 A forward iterator. |
| 2313 | * @param __last2 A forward iterator. |
| 2314 | * @param __predicate A binary predicate. |
| 2315 | * @return The first iterator @c i in the range |
| 2316 | * @p [__first1,__last1-(__last2-__first2)) such that |
| 2317 | * @p __predicate(*(i+N),*(__first2+N)) is true for each @c N in the range |
| 2318 | * @p [0,__last2-__first2), or @p __last1 if no such iterator exists. |
| 2319 | * |
| 2320 | * Searches the range @p [__first1,__last1) for a sub-sequence that |
| 2321 | * compares equal value-by-value with the sequence given by @p |
| 2322 | * [__first2,__last2), using @p __predicate to determine equality, |
| 2323 | * and returns an iterator to the first element of the |
| 2324 | * sub-sequence, or @p __last1 if no such iterator exists. |
| 2325 | * |
| 2326 | * @see search(_ForwardIter1, _ForwardIter1, _ForwardIter2, _ForwardIter2) |
| 2327 | */ |
| 2328 | template<typename _ForwardIterator1, typename _ForwardIterator2, |
| 2329 | typename _BinaryPredicate> |
| 2330 | _GLIBCXX20_CONSTEXPR |
| 2331 | inline _ForwardIterator1 |
| 2332 | search(_ForwardIterator1 __first1, _ForwardIterator1 __last1, |
| 2333 | _ForwardIterator2 __first2, _ForwardIterator2 __last2, |
| 2334 | _BinaryPredicate __predicate) |
| 2335 | { |
| 2336 | // concept requirements |
| 2337 | __glibcxx_function_requires(_ForwardIteratorConcept<_ForwardIterator1>) |
| 2338 | __glibcxx_function_requires(_ForwardIteratorConcept<_ForwardIterator2>) |
| 2339 | __glibcxx_function_requires(_BinaryPredicateConcept<_BinaryPredicate, |
| 2340 | typename iterator_traits<_ForwardIterator1>::value_type, |
| 2341 | typename iterator_traits<_ForwardIterator2>::value_type>) |
| 2342 | __glibcxx_requires_valid_range(__first1, __last1); |
| 2343 | __glibcxx_requires_valid_range(__first2, __last2); |
| 2344 | |
| 2345 | return std::__search(__first1, __last1, __first2, __last2, |
| 2346 | __gnu_cxx::__ops::__iter_comp_iter(__predicate)); |
| 2347 | } |
| 2348 | |
| 2349 | _GLIBCXX_END_NAMESPACE_ALGO |
| 2350 | _GLIBCXX_END_NAMESPACE_VERSION |
| 2351 | } // namespace std |
| 2352 | |
| 2353 | // NB: This file is included within many other C++ includes, as a way |
| 2354 | // of getting the base algorithms. So, make sure that parallel bits |
| 2355 | // come in too if requested. |
| 2356 | #ifdef _GLIBCXX_PARALLEL |
| 2357 | # include <parallel/algobase.h> |
| 2358 | #endif |
| 2359 | |
| 2360 | #endif |
| 2361 |
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