1// -*- C++ -*- 2//===---------------------------- bitset ----------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_BITSET 11#define _LIBCPP_BITSET 12 13/* 14 bitset synopsis 15 16namespace std 17{ 18 19namespace std { 20 21template <size_t N> 22class bitset 23{ 24public: 25 // bit reference: 26 class reference 27 { 28 friend class bitset; 29 reference() noexcept; 30 public: 31 ~reference() noexcept; 32 reference& operator=(bool x) noexcept; // for b[i] = x; 33 reference& operator=(const reference&) noexcept; // for b[i] = b[j]; 34 bool operator~() const noexcept; // flips the bit 35 operator bool() const noexcept; // for x = b[i]; 36 reference& flip() noexcept; // for b[i].flip(); 37 }; 38 39 // 23.3.5.1 constructors: 40 constexpr bitset() noexcept; 41 constexpr bitset(unsigned long long val) noexcept; 42 template <class charT> 43 explicit bitset(const charT* str, 44 typename basic_string<charT>::size_type n = basic_string<charT>::npos, 45 charT zero = charT('0'), charT one = charT('1')); 46 template<class charT, class traits, class Allocator> 47 explicit bitset(const basic_string<charT,traits,Allocator>& str, 48 typename basic_string<charT,traits,Allocator>::size_type pos = 0, 49 typename basic_string<charT,traits,Allocator>::size_type n = 50 basic_string<charT,traits,Allocator>::npos, 51 charT zero = charT('0'), charT one = charT('1')); 52 53 // 23.3.5.2 bitset operations: 54 bitset& operator&=(const bitset& rhs) noexcept; 55 bitset& operator|=(const bitset& rhs) noexcept; 56 bitset& operator^=(const bitset& rhs) noexcept; 57 bitset& operator<<=(size_t pos) noexcept; 58 bitset& operator>>=(size_t pos) noexcept; 59 bitset& set() noexcept; 60 bitset& set(size_t pos, bool val = true); 61 bitset& reset() noexcept; 62 bitset& reset(size_t pos); 63 bitset operator~() const noexcept; 64 bitset& flip() noexcept; 65 bitset& flip(size_t pos); 66 67 // element access: 68 constexpr bool operator[](size_t pos) const; // for b[i]; 69 reference operator[](size_t pos); // for b[i]; 70 unsigned long to_ulong() const; 71 unsigned long long to_ullong() const; 72 template <class charT, class traits, class Allocator> 73 basic_string<charT, traits, Allocator> to_string(charT zero = charT('0'), charT one = charT('1')) const; 74 template <class charT, class traits> 75 basic_string<charT, traits, allocator<charT> > to_string(charT zero = charT('0'), charT one = charT('1')) const; 76 template <class charT> 77 basic_string<charT, char_traits<charT>, allocator<charT> > to_string(charT zero = charT('0'), charT one = charT('1')) const; 78 basic_string<char, char_traits<char>, allocator<char> > to_string(char zero = '0', char one = '1') const; 79 size_t count() const noexcept; 80 constexpr size_t size() const noexcept; 81 bool operator==(const bitset& rhs) const noexcept; 82 bool operator!=(const bitset& rhs) const noexcept; 83 bool test(size_t pos) const; 84 bool all() const noexcept; 85 bool any() const noexcept; 86 bool none() const noexcept; 87 bitset operator<<(size_t pos) const noexcept; 88 bitset operator>>(size_t pos) const noexcept; 89}; 90 91// 23.3.5.3 bitset operators: 92template <size_t N> 93bitset<N> operator&(const bitset<N>&, const bitset<N>&) noexcept; 94 95template <size_t N> 96bitset<N> operator|(const bitset<N>&, const bitset<N>&) noexcept; 97 98template <size_t N> 99bitset<N> operator^(const bitset<N>&, const bitset<N>&) noexcept; 100 101template <class charT, class traits, size_t N> 102basic_istream<charT, traits>& 103operator>>(basic_istream<charT, traits>& is, bitset<N>& x); 104 105template <class charT, class traits, size_t N> 106basic_ostream<charT, traits>& 107operator<<(basic_ostream<charT, traits>& os, const bitset<N>& x); 108 109template <size_t N> struct hash<std::bitset<N>>; 110 111} // std 112 113*/ 114 115#include <__config> 116#include <__bit_reference> 117#include <cstddef> 118#include <climits> 119#include <string> 120#include <stdexcept> 121#include <iosfwd> 122#include <__functional_base> 123 124#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 125#pragma GCC system_header 126#endif 127 128_LIBCPP_PUSH_MACROS 129#include <__undef_macros> 130 131 132_LIBCPP_BEGIN_NAMESPACE_STD 133 134template <size_t _N_words, size_t _Size> 135class __bitset; 136 137template <size_t _N_words, size_t _Size> 138struct __has_storage_type<__bitset<_N_words, _Size> > 139{ 140 static const bool value = true; 141}; 142 143template <size_t _N_words, size_t _Size> 144class __bitset 145{ 146public: 147 typedef ptrdiff_t difference_type; 148 typedef size_t size_type; 149 typedef size_type __storage_type; 150protected: 151 typedef __bitset __self; 152 typedef __storage_type* __storage_pointer; 153 typedef const __storage_type* __const_storage_pointer; 154 static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT); 155 156 friend class __bit_reference<__bitset>; 157 friend class __bit_const_reference<__bitset>; 158 friend class __bit_iterator<__bitset, false>; 159 friend class __bit_iterator<__bitset, true>; 160 friend struct __bit_array<__bitset>; 161 162 __storage_type __first_[_N_words]; 163 164 typedef __bit_reference<__bitset> reference; 165 typedef __bit_const_reference<__bitset> const_reference; 166 typedef __bit_iterator<__bitset, false> iterator; 167 typedef __bit_iterator<__bitset, true> const_iterator; 168 169 _LIBCPP_INLINE_VISIBILITY 170 _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT; 171 _LIBCPP_INLINE_VISIBILITY 172 explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT; 173 174 _LIBCPP_INLINE_VISIBILITY reference __make_ref(size_t __pos) _NOEXCEPT 175 {return reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word);} 176 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR const_reference __make_ref(size_t __pos) const _NOEXCEPT 177 {return const_reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word);} 178 _LIBCPP_INLINE_VISIBILITY iterator __make_iter(size_t __pos) _NOEXCEPT 179 {return iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word);} 180 _LIBCPP_INLINE_VISIBILITY const_iterator __make_iter(size_t __pos) const _NOEXCEPT 181 {return const_iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word);} 182 183 _LIBCPP_INLINE_VISIBILITY 184 void operator&=(const __bitset& __v) _NOEXCEPT; 185 _LIBCPP_INLINE_VISIBILITY 186 void operator|=(const __bitset& __v) _NOEXCEPT; 187 _LIBCPP_INLINE_VISIBILITY 188 void operator^=(const __bitset& __v) _NOEXCEPT; 189 190 void flip() _NOEXCEPT; 191 _LIBCPP_INLINE_VISIBILITY unsigned long to_ulong() const 192 {return to_ulong(integral_constant<bool, _Size < sizeof(unsigned long) * CHAR_BIT>());} 193 _LIBCPP_INLINE_VISIBILITY unsigned long long to_ullong() const 194 {return to_ullong(integral_constant<bool, _Size < sizeof(unsigned long long) * CHAR_BIT>());} 195 196 bool all() const _NOEXCEPT; 197 bool any() const _NOEXCEPT; 198 _LIBCPP_INLINE_VISIBILITY 199 size_t __hash_code() const _NOEXCEPT; 200private: 201#ifdef _LIBCPP_CXX03_LANG 202 void __init(unsigned long long __v, false_type) _NOEXCEPT; 203 _LIBCPP_INLINE_VISIBILITY 204 void __init(unsigned long long __v, true_type) _NOEXCEPT; 205#endif // _LIBCPP_CXX03_LANG 206 unsigned long to_ulong(false_type) const; 207 _LIBCPP_INLINE_VISIBILITY 208 unsigned long to_ulong(true_type) const; 209 unsigned long long to_ullong(false_type) const; 210 _LIBCPP_INLINE_VISIBILITY 211 unsigned long long to_ullong(true_type) const; 212 _LIBCPP_INLINE_VISIBILITY 213 unsigned long long to_ullong(true_type, false_type) const; 214 unsigned long long to_ullong(true_type, true_type) const; 215}; 216 217template <size_t _N_words, size_t _Size> 218inline 219_LIBCPP_CONSTEXPR 220__bitset<_N_words, _Size>::__bitset() _NOEXCEPT 221#ifndef _LIBCPP_CXX03_LANG 222 : __first_{0} 223#endif 224{ 225#ifdef _LIBCPP_CXX03_LANG 226 _VSTD::fill_n(__first_, _N_words, __storage_type(0)); 227#endif 228} 229 230#ifdef _LIBCPP_CXX03_LANG 231 232template <size_t _N_words, size_t _Size> 233void 234__bitset<_N_words, _Size>::__init(unsigned long long __v, false_type) _NOEXCEPT 235{ 236 __storage_type __t[sizeof(unsigned long long) / sizeof(__storage_type)]; 237 size_t __sz = _Size; 238 for (size_t __i = 0; __i < sizeof(__t)/sizeof(__t[0]); ++__i, __v >>= __bits_per_word, __sz -= __bits_per_word ) 239 if ( __sz < __bits_per_word) 240 __t[__i] = static_cast<__storage_type>(__v) & ( 1ULL << __sz ) - 1; 241 else 242 __t[__i] = static_cast<__storage_type>(__v); 243 244 _VSTD::copy(__t, __t + sizeof(__t)/sizeof(__t[0]), __first_); 245 _VSTD::fill(__first_ + sizeof(__t)/sizeof(__t[0]), __first_ + sizeof(__first_)/sizeof(__first_[0]), 246 __storage_type(0)); 247} 248 249template <size_t _N_words, size_t _Size> 250inline _LIBCPP_INLINE_VISIBILITY 251void 252__bitset<_N_words, _Size>::__init(unsigned long long __v, true_type) _NOEXCEPT 253{ 254 __first_[0] = __v; 255 if (_Size < __bits_per_word) 256 __first_[0] &= ( 1ULL << _Size ) - 1; 257 258 _VSTD::fill(__first_ + 1, __first_ + sizeof(__first_)/sizeof(__first_[0]), __storage_type(0)); 259} 260 261#endif // _LIBCPP_CXX03_LANG 262 263template <size_t _N_words, size_t _Size> 264inline 265_LIBCPP_CONSTEXPR 266__bitset<_N_words, _Size>::__bitset(unsigned long long __v) _NOEXCEPT 267#ifndef _LIBCPP_CXX03_LANG 268#if __SIZEOF_SIZE_T__ == 8 269 : __first_{__v} 270#elif __SIZEOF_SIZE_T__ == 4 271 : __first_{static_cast<__storage_type>(__v), 272 _Size >= 2 * __bits_per_word ? static_cast<__storage_type>(__v >> __bits_per_word) 273 : static_cast<__storage_type>((__v >> __bits_per_word) & (__storage_type(1) << (_Size - __bits_per_word)) - 1)} 274#else 275#error This constructor has not been ported to this platform 276#endif 277#endif 278{ 279#ifdef _LIBCPP_CXX03_LANG 280 __init(__v, integral_constant<bool, sizeof(unsigned long long) == sizeof(__storage_type)>()); 281#endif 282} 283 284template <size_t _N_words, size_t _Size> 285inline 286void 287__bitset<_N_words, _Size>::operator&=(const __bitset& __v) _NOEXCEPT 288{ 289 for (size_type __i = 0; __i < _N_words; ++__i) 290 __first_[__i] &= __v.__first_[__i]; 291} 292 293template <size_t _N_words, size_t _Size> 294inline 295void 296__bitset<_N_words, _Size>::operator|=(const __bitset& __v) _NOEXCEPT 297{ 298 for (size_type __i = 0; __i < _N_words; ++__i) 299 __first_[__i] |= __v.__first_[__i]; 300} 301 302template <size_t _N_words, size_t _Size> 303inline 304void 305__bitset<_N_words, _Size>::operator^=(const __bitset& __v) _NOEXCEPT 306{ 307 for (size_type __i = 0; __i < _N_words; ++__i) 308 __first_[__i] ^= __v.__first_[__i]; 309} 310 311template <size_t _N_words, size_t _Size> 312void 313__bitset<_N_words, _Size>::flip() _NOEXCEPT 314{ 315 // do middle whole words 316 size_type __n = _Size; 317 __storage_pointer __p = __first_; 318 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 319 *__p = ~*__p; 320 // do last partial word 321 if (__n > 0) 322 { 323 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 324 __storage_type __b = *__p & __m; 325 *__p &= ~__m; 326 *__p |= ~__b & __m; 327 } 328} 329 330template <size_t _N_words, size_t _Size> 331unsigned long 332__bitset<_N_words, _Size>::to_ulong(false_type) const 333{ 334 const_iterator __e = __make_iter(_Size); 335 const_iterator __i = _VSTD::find(__make_iter(sizeof(unsigned long) * CHAR_BIT), __e, true); 336 if (__i != __e) 337 __throw_overflow_error("bitset to_ulong overflow error"); 338 339 return __first_[0]; 340} 341 342template <size_t _N_words, size_t _Size> 343inline 344unsigned long 345__bitset<_N_words, _Size>::to_ulong(true_type) const 346{ 347 return __first_[0]; 348} 349 350template <size_t _N_words, size_t _Size> 351unsigned long long 352__bitset<_N_words, _Size>::to_ullong(false_type) const 353{ 354 const_iterator __e = __make_iter(_Size); 355 const_iterator __i = _VSTD::find(__make_iter(sizeof(unsigned long long) * CHAR_BIT), __e, true); 356 if (__i != __e) 357 __throw_overflow_error("bitset to_ullong overflow error"); 358 359 return to_ullong(true_type()); 360} 361 362template <size_t _N_words, size_t _Size> 363inline 364unsigned long long 365__bitset<_N_words, _Size>::to_ullong(true_type) const 366{ 367 return to_ullong(true_type(), integral_constant<bool, sizeof(__storage_type) < sizeof(unsigned long long)>()); 368} 369 370template <size_t _N_words, size_t _Size> 371inline 372unsigned long long 373__bitset<_N_words, _Size>::to_ullong(true_type, false_type) const 374{ 375 return __first_[0]; 376} 377 378template <size_t _N_words, size_t _Size> 379unsigned long long 380__bitset<_N_words, _Size>::to_ullong(true_type, true_type) const 381{ 382 unsigned long long __r = __first_[0]; 383 for (size_t __i = 1; __i < sizeof(unsigned long long) / sizeof(__storage_type); ++__i) 384 __r |= static_cast<unsigned long long>(__first_[__i]) << (sizeof(__storage_type) * CHAR_BIT); 385 return __r; 386} 387 388template <size_t _N_words, size_t _Size> 389bool 390__bitset<_N_words, _Size>::all() const _NOEXCEPT 391{ 392 // do middle whole words 393 size_type __n = _Size; 394 __const_storage_pointer __p = __first_; 395 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 396 if (~*__p) 397 return false; 398 // do last partial word 399 if (__n > 0) 400 { 401 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 402 if (~*__p & __m) 403 return false; 404 } 405 return true; 406} 407 408template <size_t _N_words, size_t _Size> 409bool 410__bitset<_N_words, _Size>::any() const _NOEXCEPT 411{ 412 // do middle whole words 413 size_type __n = _Size; 414 __const_storage_pointer __p = __first_; 415 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 416 if (*__p) 417 return true; 418 // do last partial word 419 if (__n > 0) 420 { 421 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 422 if (*__p & __m) 423 return true; 424 } 425 return false; 426} 427 428template <size_t _N_words, size_t _Size> 429inline 430size_t 431__bitset<_N_words, _Size>::__hash_code() const _NOEXCEPT 432{ 433 size_t __h = 0; 434 for (size_type __i = 0; __i < _N_words; ++__i) 435 __h ^= __first_[__i]; 436 return __h; 437} 438 439template <size_t _Size> 440class __bitset<1, _Size> 441{ 442public: 443 typedef ptrdiff_t difference_type; 444 typedef size_t size_type; 445 typedef size_type __storage_type; 446protected: 447 typedef __bitset __self; 448 typedef __storage_type* __storage_pointer; 449 typedef const __storage_type* __const_storage_pointer; 450 static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT); 451 452 friend class __bit_reference<__bitset>; 453 friend class __bit_const_reference<__bitset>; 454 friend class __bit_iterator<__bitset, false>; 455 friend class __bit_iterator<__bitset, true>; 456 friend struct __bit_array<__bitset>; 457 458 __storage_type __first_; 459 460 typedef __bit_reference<__bitset> reference; 461 typedef __bit_const_reference<__bitset> const_reference; 462 typedef __bit_iterator<__bitset, false> iterator; 463 typedef __bit_iterator<__bitset, true> const_iterator; 464 465 _LIBCPP_INLINE_VISIBILITY 466 _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT; 467 _LIBCPP_INLINE_VISIBILITY 468 explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT; 469 470 _LIBCPP_INLINE_VISIBILITY reference __make_ref(size_t __pos) _NOEXCEPT 471 {return reference(&__first_, __storage_type(1) << __pos);} 472 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR const_reference __make_ref(size_t __pos) const _NOEXCEPT 473 {return const_reference(&__first_, __storage_type(1) << __pos);} 474 _LIBCPP_INLINE_VISIBILITY iterator __make_iter(size_t __pos) _NOEXCEPT 475 {return iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);} 476 _LIBCPP_INLINE_VISIBILITY const_iterator __make_iter(size_t __pos) const _NOEXCEPT 477 {return const_iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);} 478 479 _LIBCPP_INLINE_VISIBILITY 480 void operator&=(const __bitset& __v) _NOEXCEPT; 481 _LIBCPP_INLINE_VISIBILITY 482 void operator|=(const __bitset& __v) _NOEXCEPT; 483 _LIBCPP_INLINE_VISIBILITY 484 void operator^=(const __bitset& __v) _NOEXCEPT; 485 486 _LIBCPP_INLINE_VISIBILITY 487 void flip() _NOEXCEPT; 488 489 _LIBCPP_INLINE_VISIBILITY 490 unsigned long to_ulong() const; 491 _LIBCPP_INLINE_VISIBILITY 492 unsigned long long to_ullong() const; 493 494 _LIBCPP_INLINE_VISIBILITY 495 bool all() const _NOEXCEPT; 496 _LIBCPP_INLINE_VISIBILITY 497 bool any() const _NOEXCEPT; 498 499 _LIBCPP_INLINE_VISIBILITY 500 size_t __hash_code() const _NOEXCEPT; 501}; 502 503template <size_t _Size> 504inline 505_LIBCPP_CONSTEXPR 506__bitset<1, _Size>::__bitset() _NOEXCEPT 507 : __first_(0) 508{ 509} 510 511template <size_t _Size> 512inline 513_LIBCPP_CONSTEXPR 514__bitset<1, _Size>::__bitset(unsigned long long __v) _NOEXCEPT 515 : __first_( 516 _Size == __bits_per_word ? static_cast<__storage_type>(__v) 517 : static_cast<__storage_type>(__v) & ((__storage_type(1) << _Size) - 1) 518 ) 519{ 520} 521 522template <size_t _Size> 523inline 524void 525__bitset<1, _Size>::operator&=(const __bitset& __v) _NOEXCEPT 526{ 527 __first_ &= __v.__first_; 528} 529 530template <size_t _Size> 531inline 532void 533__bitset<1, _Size>::operator|=(const __bitset& __v) _NOEXCEPT 534{ 535 __first_ |= __v.__first_; 536} 537 538template <size_t _Size> 539inline 540void 541__bitset<1, _Size>::operator^=(const __bitset& __v) _NOEXCEPT 542{ 543 __first_ ^= __v.__first_; 544} 545 546template <size_t _Size> 547inline 548void 549__bitset<1, _Size>::flip() _NOEXCEPT 550{ 551 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 552 __first_ = ~__first_; 553 __first_ &= __m; 554} 555 556template <size_t _Size> 557inline 558unsigned long 559__bitset<1, _Size>::to_ulong() const 560{ 561 return __first_; 562} 563 564template <size_t _Size> 565inline 566unsigned long long 567__bitset<1, _Size>::to_ullong() const 568{ 569 return __first_; 570} 571 572template <size_t _Size> 573inline 574bool 575__bitset<1, _Size>::all() const _NOEXCEPT 576{ 577 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 578 return !(~__first_ & __m); 579} 580 581template <size_t _Size> 582inline 583bool 584__bitset<1, _Size>::any() const _NOEXCEPT 585{ 586 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 587 return __first_ & __m; 588} 589 590template <size_t _Size> 591inline 592size_t 593__bitset<1, _Size>::__hash_code() const _NOEXCEPT 594{ 595 return __first_; 596} 597 598template <> 599class __bitset<0, 0> 600{ 601public: 602 typedef ptrdiff_t difference_type; 603 typedef size_t size_type; 604 typedef size_type __storage_type; 605protected: 606 typedef __bitset __self; 607 typedef __storage_type* __storage_pointer; 608 typedef const __storage_type* __const_storage_pointer; 609 static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT); 610 611 friend class __bit_reference<__bitset>; 612 friend class __bit_const_reference<__bitset>; 613 friend class __bit_iterator<__bitset, false>; 614 friend class __bit_iterator<__bitset, true>; 615 friend struct __bit_array<__bitset>; 616 617 typedef __bit_reference<__bitset> reference; 618 typedef __bit_const_reference<__bitset> const_reference; 619 typedef __bit_iterator<__bitset, false> iterator; 620 typedef __bit_iterator<__bitset, true> const_iterator; 621 622 _LIBCPP_INLINE_VISIBILITY 623 _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT; 624 _LIBCPP_INLINE_VISIBILITY 625 explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long) _NOEXCEPT; 626 627 _LIBCPP_INLINE_VISIBILITY reference __make_ref(size_t) _NOEXCEPT 628 {return reference(nullptr, 1);} 629 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR const_reference __make_ref(size_t) const _NOEXCEPT 630 {return const_reference(nullptr, 1);} 631 _LIBCPP_INLINE_VISIBILITY iterator __make_iter(size_t) _NOEXCEPT 632 {return iterator(nullptr, 0);} 633 _LIBCPP_INLINE_VISIBILITY const_iterator __make_iter(size_t) const _NOEXCEPT 634 {return const_iterator(nullptr, 0);} 635 636 _LIBCPP_INLINE_VISIBILITY void operator&=(const __bitset&) _NOEXCEPT {} 637 _LIBCPP_INLINE_VISIBILITY void operator|=(const __bitset&) _NOEXCEPT {} 638 _LIBCPP_INLINE_VISIBILITY void operator^=(const __bitset&) _NOEXCEPT {} 639 640 _LIBCPP_INLINE_VISIBILITY void flip() _NOEXCEPT {} 641 642 _LIBCPP_INLINE_VISIBILITY unsigned long to_ulong() const {return 0;} 643 _LIBCPP_INLINE_VISIBILITY unsigned long long to_ullong() const {return 0;} 644 645 _LIBCPP_INLINE_VISIBILITY bool all() const _NOEXCEPT {return true;} 646 _LIBCPP_INLINE_VISIBILITY bool any() const _NOEXCEPT {return false;} 647 648 _LIBCPP_INLINE_VISIBILITY size_t __hash_code() const _NOEXCEPT {return 0;} 649}; 650 651inline 652_LIBCPP_CONSTEXPR 653__bitset<0, 0>::__bitset() _NOEXCEPT 654{ 655} 656 657inline 658_LIBCPP_CONSTEXPR 659__bitset<0, 0>::__bitset(unsigned long long) _NOEXCEPT 660{ 661} 662 663template <size_t _Size> class _LIBCPP_TEMPLATE_VIS bitset; 664template <size_t _Size> struct hash<bitset<_Size> >; 665 666template <size_t _Size> 667class _LIBCPP_TEMPLATE_VIS bitset 668 : private __bitset<_Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1, _Size> 669{ 670public: 671 static const unsigned __n_words = _Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1; 672 typedef __bitset<__n_words, _Size> base; 673 674public: 675 typedef typename base::reference reference; 676 typedef typename base::const_reference const_reference; 677 678 // 23.3.5.1 constructors: 679 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR bitset() _NOEXCEPT {} 680 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 681 bitset(unsigned long long __v) _NOEXCEPT : base(__v) {} 682 template<class _CharT, class = _EnableIf<_IsCharLikeType<_CharT>::value> > 683 explicit bitset(const _CharT* __str, 684 typename basic_string<_CharT>::size_type __n = basic_string<_CharT>::npos, 685 _CharT __zero = _CharT('0'), _CharT __one = _CharT('1')); 686 template<class _CharT, class _Traits, class _Allocator> 687 explicit bitset(const basic_string<_CharT,_Traits,_Allocator>& __str, 688 typename basic_string<_CharT,_Traits,_Allocator>::size_type __pos = 0, 689 typename basic_string<_CharT,_Traits,_Allocator>::size_type __n = 690 (basic_string<_CharT,_Traits,_Allocator>::npos), 691 _CharT __zero = _CharT('0'), _CharT __one = _CharT('1')); 692 693 // 23.3.5.2 bitset operations: 694 _LIBCPP_INLINE_VISIBILITY 695 bitset& operator&=(const bitset& __rhs) _NOEXCEPT; 696 _LIBCPP_INLINE_VISIBILITY 697 bitset& operator|=(const bitset& __rhs) _NOEXCEPT; 698 _LIBCPP_INLINE_VISIBILITY 699 bitset& operator^=(const bitset& __rhs) _NOEXCEPT; 700 bitset& operator<<=(size_t __pos) _NOEXCEPT; 701 bitset& operator>>=(size_t __pos) _NOEXCEPT; 702 _LIBCPP_INLINE_VISIBILITY 703 bitset& set() _NOEXCEPT; 704 bitset& set(size_t __pos, bool __val = true); 705 _LIBCPP_INLINE_VISIBILITY 706 bitset& reset() _NOEXCEPT; 707 bitset& reset(size_t __pos); 708 _LIBCPP_INLINE_VISIBILITY 709 bitset operator~() const _NOEXCEPT; 710 _LIBCPP_INLINE_VISIBILITY 711 bitset& flip() _NOEXCEPT; 712 bitset& flip(size_t __pos); 713 714 // element access: 715 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 716 const_reference operator[](size_t __p) const {return base::__make_ref(__p);} 717 _LIBCPP_INLINE_VISIBILITY reference operator[](size_t __p) {return base::__make_ref(__p);} 718 _LIBCPP_INLINE_VISIBILITY 719 unsigned long to_ulong() const; 720 _LIBCPP_INLINE_VISIBILITY 721 unsigned long long to_ullong() const; 722 template <class _CharT, class _Traits, class _Allocator> 723 basic_string<_CharT, _Traits, _Allocator> to_string(_CharT __zero = _CharT('0'), 724 _CharT __one = _CharT('1')) const; 725 template <class _CharT, class _Traits> 726 _LIBCPP_INLINE_VISIBILITY 727 basic_string<_CharT, _Traits, allocator<_CharT> > to_string(_CharT __zero = _CharT('0'), 728 _CharT __one = _CharT('1')) const; 729 template <class _CharT> 730 _LIBCPP_INLINE_VISIBILITY 731 basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> > to_string(_CharT __zero = _CharT('0'), 732 _CharT __one = _CharT('1')) const; 733 _LIBCPP_INLINE_VISIBILITY 734 basic_string<char, char_traits<char>, allocator<char> > to_string(char __zero = '0', 735 char __one = '1') const; 736 _LIBCPP_INLINE_VISIBILITY 737 size_t count() const _NOEXCEPT; 738 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR size_t size() const _NOEXCEPT {return _Size;} 739 _LIBCPP_INLINE_VISIBILITY 740 bool operator==(const bitset& __rhs) const _NOEXCEPT; 741 _LIBCPP_INLINE_VISIBILITY 742 bool operator!=(const bitset& __rhs) const _NOEXCEPT; 743 bool test(size_t __pos) const; 744 _LIBCPP_INLINE_VISIBILITY 745 bool all() const _NOEXCEPT; 746 _LIBCPP_INLINE_VISIBILITY 747 bool any() const _NOEXCEPT; 748 _LIBCPP_INLINE_VISIBILITY bool none() const _NOEXCEPT {return !any();} 749 _LIBCPP_INLINE_VISIBILITY 750 bitset operator<<(size_t __pos) const _NOEXCEPT; 751 _LIBCPP_INLINE_VISIBILITY 752 bitset operator>>(size_t __pos) const _NOEXCEPT; 753 754private: 755 756 _LIBCPP_INLINE_VISIBILITY 757 size_t __hash_code() const _NOEXCEPT {return base::__hash_code();} 758 759 friend struct hash<bitset>; 760}; 761 762template <size_t _Size> 763template<class _CharT, class> 764bitset<_Size>::bitset(const _CharT* __str, 765 typename basic_string<_CharT>::size_type __n, 766 _CharT __zero, _CharT __one) 767{ 768 size_t __rlen = _VSTD::min(__n, char_traits<_CharT>::length(__str)); 769 for (size_t __i = 0; __i < __rlen; ++__i) 770 if (__str[__i] != __zero && __str[__i] != __one) 771 __throw_invalid_argument("bitset string ctor has invalid argument"); 772 773 size_t _Mp = _VSTD::min(__rlen, _Size); 774 size_t __i = 0; 775 for (; __i < _Mp; ++__i) 776 { 777 _CharT __c = __str[_Mp - 1 - __i]; 778 if (__c == __zero) 779 (*this)[__i] = false; 780 else 781 (*this)[__i] = true; 782 } 783 _VSTD::fill(base::__make_iter(__i), base::__make_iter(_Size), false); 784} 785 786template <size_t _Size> 787template<class _CharT, class _Traits, class _Allocator> 788bitset<_Size>::bitset(const basic_string<_CharT,_Traits,_Allocator>& __str, 789 typename basic_string<_CharT,_Traits,_Allocator>::size_type __pos, 790 typename basic_string<_CharT,_Traits,_Allocator>::size_type __n, 791 _CharT __zero, _CharT __one) 792{ 793 if (__pos > __str.size()) 794 __throw_out_of_range("bitset string pos out of range"); 795 796 size_t __rlen = _VSTD::min(__n, __str.size() - __pos); 797 for (size_t __i = __pos; __i < __pos + __rlen; ++__i) 798 if (!_Traits::eq(__str[__i], __zero) && !_Traits::eq(__str[__i], __one)) 799 __throw_invalid_argument("bitset string ctor has invalid argument"); 800 801 size_t _Mp = _VSTD::min(__rlen, _Size); 802 size_t __i = 0; 803 for (; __i < _Mp; ++__i) 804 { 805 _CharT __c = __str[__pos + _Mp - 1 - __i]; 806 if (_Traits::eq(__c, __zero)) 807 (*this)[__i] = false; 808 else 809 (*this)[__i] = true; 810 } 811 _VSTD::fill(base::__make_iter(__i), base::__make_iter(_Size), false); 812} 813 814template <size_t _Size> 815inline 816bitset<_Size>& 817bitset<_Size>::operator&=(const bitset& __rhs) _NOEXCEPT 818{ 819 base::operator&=(__rhs); 820 return *this; 821} 822 823template <size_t _Size> 824inline 825bitset<_Size>& 826bitset<_Size>::operator|=(const bitset& __rhs) _NOEXCEPT 827{ 828 base::operator|=(__rhs); 829 return *this; 830} 831 832template <size_t _Size> 833inline 834bitset<_Size>& 835bitset<_Size>::operator^=(const bitset& __rhs) _NOEXCEPT 836{ 837 base::operator^=(__rhs); 838 return *this; 839} 840 841template <size_t _Size> 842bitset<_Size>& 843bitset<_Size>::operator<<=(size_t __pos) _NOEXCEPT 844{ 845 __pos = _VSTD::min(__pos, _Size); 846 _VSTD::copy_backward(base::__make_iter(0), base::__make_iter(_Size - __pos), base::__make_iter(_Size)); 847 _VSTD::fill_n(base::__make_iter(0), __pos, false); 848 return *this; 849} 850 851template <size_t _Size> 852bitset<_Size>& 853bitset<_Size>::operator>>=(size_t __pos) _NOEXCEPT 854{ 855 __pos = _VSTD::min(__pos, _Size); 856 _VSTD::copy(base::__make_iter(__pos), base::__make_iter(_Size), base::__make_iter(0)); 857 _VSTD::fill_n(base::__make_iter(_Size - __pos), __pos, false); 858 return *this; 859} 860 861template <size_t _Size> 862inline 863bitset<_Size>& 864bitset<_Size>::set() _NOEXCEPT 865{ 866 _VSTD::fill_n(base::__make_iter(0), _Size, true); 867 return *this; 868} 869 870template <size_t _Size> 871bitset<_Size>& 872bitset<_Size>::set(size_t __pos, bool __val) 873{ 874 if (__pos >= _Size) 875 __throw_out_of_range("bitset set argument out of range"); 876 877 (*this)[__pos] = __val; 878 return *this; 879} 880 881template <size_t _Size> 882inline 883bitset<_Size>& 884bitset<_Size>::reset() _NOEXCEPT 885{ 886 _VSTD::fill_n(base::__make_iter(0), _Size, false); 887 return *this; 888} 889 890template <size_t _Size> 891bitset<_Size>& 892bitset<_Size>::reset(size_t __pos) 893{ 894 if (__pos >= _Size) 895 __throw_out_of_range("bitset reset argument out of range"); 896 897 (*this)[__pos] = false; 898 return *this; 899} 900 901template <size_t _Size> 902inline 903bitset<_Size> 904bitset<_Size>::operator~() const _NOEXCEPT 905{ 906 bitset __x(*this); 907 __x.flip(); 908 return __x; 909} 910 911template <size_t _Size> 912inline 913bitset<_Size>& 914bitset<_Size>::flip() _NOEXCEPT 915{ 916 base::flip(); 917 return *this; 918} 919 920template <size_t _Size> 921bitset<_Size>& 922bitset<_Size>::flip(size_t __pos) 923{ 924 if (__pos >= _Size) 925 __throw_out_of_range("bitset flip argument out of range"); 926 927 reference r = base::__make_ref(__pos); 928 r = ~r; 929 return *this; 930} 931 932template <size_t _Size> 933inline 934unsigned long 935bitset<_Size>::to_ulong() const 936{ 937 return base::to_ulong(); 938} 939 940template <size_t _Size> 941inline 942unsigned long long 943bitset<_Size>::to_ullong() const 944{ 945 return base::to_ullong(); 946} 947 948template <size_t _Size> 949template <class _CharT, class _Traits, class _Allocator> 950basic_string<_CharT, _Traits, _Allocator> 951bitset<_Size>::to_string(_CharT __zero, _CharT __one) const 952{ 953 basic_string<_CharT, _Traits, _Allocator> __r(_Size, __zero); 954 for (size_t __i = 0; __i < _Size; ++__i) 955 { 956 if ((*this)[__i]) 957 __r[_Size - 1 - __i] = __one; 958 } 959 return __r; 960} 961 962template <size_t _Size> 963template <class _CharT, class _Traits> 964inline 965basic_string<_CharT, _Traits, allocator<_CharT> > 966bitset<_Size>::to_string(_CharT __zero, _CharT __one) const 967{ 968 return to_string<_CharT, _Traits, allocator<_CharT> >(__zero, __one); 969} 970 971template <size_t _Size> 972template <class _CharT> 973inline 974basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> > 975bitset<_Size>::to_string(_CharT __zero, _CharT __one) const 976{ 977 return to_string<_CharT, char_traits<_CharT>, allocator<_CharT> >(__zero, __one); 978} 979 980template <size_t _Size> 981inline 982basic_string<char, char_traits<char>, allocator<char> > 983bitset<_Size>::to_string(char __zero, char __one) const 984{ 985 return to_string<char, char_traits<char>, allocator<char> >(__zero, __one); 986} 987 988template <size_t _Size> 989inline 990size_t 991bitset<_Size>::count() const _NOEXCEPT 992{ 993 return static_cast<size_t>(_VSTD::__count_bool_true(base::__make_iter(0), _Size)); 994} 995 996template <size_t _Size> 997inline 998bool 999bitset<_Size>::operator==(const bitset& __rhs) const _NOEXCEPT 1000{ 1001 return _VSTD::equal(base::__make_iter(0), base::__make_iter(_Size), __rhs.__make_iter(0)); 1002} 1003 1004template <size_t _Size> 1005inline 1006bool 1007bitset<_Size>::operator!=(const bitset& __rhs) const _NOEXCEPT 1008{ 1009 return !(*this == __rhs); 1010} 1011 1012template <size_t _Size> 1013bool 1014bitset<_Size>::test(size_t __pos) const 1015{ 1016 if (__pos >= _Size) 1017 __throw_out_of_range("bitset test argument out of range"); 1018 1019 return (*this)[__pos]; 1020} 1021 1022template <size_t _Size> 1023inline 1024bool 1025bitset<_Size>::all() const _NOEXCEPT 1026{ 1027 return base::all(); 1028} 1029 1030template <size_t _Size> 1031inline 1032bool 1033bitset<_Size>::any() const _NOEXCEPT 1034{ 1035 return base::any(); 1036} 1037 1038template <size_t _Size> 1039inline 1040bitset<_Size> 1041bitset<_Size>::operator<<(size_t __pos) const _NOEXCEPT 1042{ 1043 bitset __r = *this; 1044 __r <<= __pos; 1045 return __r; 1046} 1047 1048template <size_t _Size> 1049inline 1050bitset<_Size> 1051bitset<_Size>::operator>>(size_t __pos) const _NOEXCEPT 1052{ 1053 bitset __r = *this; 1054 __r >>= __pos; 1055 return __r; 1056} 1057 1058template <size_t _Size> 1059inline _LIBCPP_INLINE_VISIBILITY 1060bitset<_Size> 1061operator&(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT 1062{ 1063 bitset<_Size> __r = __x; 1064 __r &= __y; 1065 return __r; 1066} 1067 1068template <size_t _Size> 1069inline _LIBCPP_INLINE_VISIBILITY 1070bitset<_Size> 1071operator|(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT 1072{ 1073 bitset<_Size> __r = __x; 1074 __r |= __y; 1075 return __r; 1076} 1077 1078template <size_t _Size> 1079inline _LIBCPP_INLINE_VISIBILITY 1080bitset<_Size> 1081operator^(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT 1082{ 1083 bitset<_Size> __r = __x; 1084 __r ^= __y; 1085 return __r; 1086} 1087 1088template <size_t _Size> 1089struct _LIBCPP_TEMPLATE_VIS hash<bitset<_Size> > 1090 : public unary_function<bitset<_Size>, size_t> 1091{ 1092 _LIBCPP_INLINE_VISIBILITY 1093 size_t operator()(const bitset<_Size>& __bs) const _NOEXCEPT 1094 {return __bs.__hash_code();} 1095}; 1096 1097template <class _CharT, class _Traits, size_t _Size> 1098basic_istream<_CharT, _Traits>& 1099operator>>(basic_istream<_CharT, _Traits>& __is, bitset<_Size>& __x); 1100 1101template <class _CharT, class _Traits, size_t _Size> 1102basic_ostream<_CharT, _Traits>& 1103operator<<(basic_ostream<_CharT, _Traits>& __os, const bitset<_Size>& __x); 1104 1105_LIBCPP_END_NAMESPACE_STD 1106 1107_LIBCPP_POP_MACROS 1108 1109#endif // _LIBCPP_BITSET 1110