1 // -*- C++ -*- 2 //===---------------------------- bitset ----------------------------------===// 3 // 4 // The LLVM Compiler Infrastructure 5 // 6 // This file is dual licensed under the MIT and the University of Illinois Open 7 // Source Licenses. See LICENSE.TXT for details. 8 // 9 //===----------------------------------------------------------------------===// 10 11 #ifndef _LIBCPP_BITSET 12 #define _LIBCPP_BITSET 13 14 /* 15 bitset synopsis 16 17 namespace std 18 { 19 20 namespace std { 21 22 template <size_t N> 23 class bitset 24 { 25 public: 26 // bit reference: 27 class reference 28 { 29 friend class bitset; 30 reference() noexcept; 31 public: 32 ~reference() noexcept; 33 reference& operator=(bool x) noexcept; // for b[i] = x; 34 reference& operator=(const reference&) noexcept; // for b[i] = b[j]; 35 bool operator~() const noexcept; // flips the bit 36 operator bool() const noexcept; // for x = b[i]; 37 reference& flip() noexcept; // for b[i].flip(); 38 }; 39 40 // 23.3.5.1 constructors: 41 constexpr bitset() noexcept; 42 constexpr bitset(unsigned long long val) noexcept; 43 template <class charT> 44 explicit bitset(const charT* str, 45 typename basic_string<charT>::size_type n = basic_string<charT>::npos, 46 charT zero = charT('0'), charT one = charT('1')); 47 template<class charT, class traits, class Allocator> 48 explicit bitset(const basic_string<charT,traits,Allocator>& str, 49 typename basic_string<charT,traits,Allocator>::size_type pos = 0, 50 typename basic_string<charT,traits,Allocator>::size_type n = 51 basic_string<charT,traits,Allocator>::npos, 52 charT zero = charT('0'), charT one = charT('1')); 53 54 // 23.3.5.2 bitset operations: 55 bitset& operator&=(const bitset& rhs) noexcept; 56 bitset& operator|=(const bitset& rhs) noexcept; 57 bitset& operator^=(const bitset& rhs) noexcept; 58 bitset& operator<<=(size_t pos) noexcept; 59 bitset& operator>>=(size_t pos) noexcept; 60 bitset& set() noexcept; 61 bitset& set(size_t pos, bool val = true); 62 bitset& reset() noexcept; 63 bitset& reset(size_t pos); 64 bitset operator~() const noexcept; 65 bitset& flip() noexcept; 66 bitset& flip(size_t pos); 67 68 // element access: 69 constexpr bool operator[](size_t pos) const; // for b[i]; 70 reference operator[](size_t pos); // for b[i]; 71 unsigned long to_ulong() const; 72 unsigned long long to_ullong() const; 73 template <class charT, class traits, class Allocator> 74 basic_string<charT, traits, Allocator> to_string(charT zero = charT('0'), charT one = charT('1')) const; 75 template <class charT, class traits> 76 basic_string<charT, traits, allocator<charT> > to_string(charT zero = charT('0'), charT one = charT('1')) const; 77 template <class charT> 78 basic_string<charT, char_traits<charT>, allocator<charT> > to_string(charT zero = charT('0'), charT one = charT('1')) const; 79 basic_string<char, char_traits<char>, allocator<char> > to_string(char zero = '0', char one = '1') const; 80 size_t count() const noexcept; 81 constexpr size_t size() const noexcept; 82 bool operator==(const bitset& rhs) const noexcept; 83 bool operator!=(const bitset& rhs) const noexcept; 84 bool test(size_t pos) const; 85 bool all() const noexcept; 86 bool any() const noexcept; 87 bool none() const noexcept; 88 bitset operator<<(size_t pos) const noexcept; 89 bitset operator>>(size_t pos) const noexcept; 90 }; 91 92 // 23.3.5.3 bitset operators: 93 template <size_t N> 94 bitset<N> operator&(const bitset<N>&, const bitset<N>&) noexcept; 95 96 template <size_t N> 97 bitset<N> operator|(const bitset<N>&, const bitset<N>&) noexcept; 98 99 template <size_t N> 100 bitset<N> operator^(const bitset<N>&, const bitset<N>&) noexcept; 101 102 template <class charT, class traits, size_t N> 103 basic_istream<charT, traits>& 104 operator>>(basic_istream<charT, traits>& is, bitset<N>& x); 105 106 template <class charT, class traits, size_t N> 107 basic_ostream<charT, traits>& 108 operator<<(basic_ostream<charT, traits>& os, const bitset<N>& x); 109 110 template <size_t N> struct hash<std::bitset<N>>; 111 112 } // std 113 114 */ 115 116 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 117 #pragma GCC system_header 118 #endif 119 120 #include <__config> 121 #include <__bit_reference> 122 #include <cstddef> 123 #include <climits> 124 #include <string> 125 #include <stdexcept> 126 #include <iosfwd> 127 #include <__functional_base> 128 #if defined(_LIBCPP_NO_EXCEPTIONS) 129 #include <cassert> 130 #endif 131 132 #include <__undef_min_max> 133 134 _LIBCPP_BEGIN_NAMESPACE_STD 135 136 template <size_t _N_words, size_t _Size> 137 class __bitset; 138 139 template <size_t _N_words, size_t _Size> 140 struct __has_storage_type<__bitset<_N_words, _Size> > 141 { 142 static const bool value = true; 143 }; 144 145 template <size_t _N_words, size_t _Size> 146 class __bitset 147 { 148 public: 149 typedef ptrdiff_t difference_type; 150 typedef size_t size_type; 151 typedef size_type __storage_type; 152 protected: 153 typedef __bitset __self; 154 typedef __storage_type* __storage_pointer; 155 typedef const __storage_type* __const_storage_pointer; 156 static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT); 157 158 friend class __bit_reference<__bitset>; 159 friend class __bit_const_reference<__bitset>; 160 friend class __bit_iterator<__bitset, false>; 161 friend class __bit_iterator<__bitset, true>; 162 friend struct __bit_array<__bitset>; 163 164 __storage_type __first_[_N_words]; 165 166 typedef __bit_reference<__bitset> reference; 167 typedef __bit_const_reference<__bitset> const_reference; 168 typedef __bit_iterator<__bitset, false> iterator; 169 typedef __bit_iterator<__bitset, true> const_iterator; 170 171 _LIBCPP_INLINE_VISIBILITY 172 _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT; 173 _LIBCPP_INLINE_VISIBILITY 174 explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT; 175 176 _LIBCPP_INLINE_VISIBILITY reference __make_ref(size_t __pos) _NOEXCEPT 177 {return reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word);} 178 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR const_reference __make_ref(size_t __pos) const _NOEXCEPT 179 {return const_reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word);} 180 _LIBCPP_INLINE_VISIBILITY iterator __make_iter(size_t __pos) _NOEXCEPT 181 {return iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word);} 182 _LIBCPP_INLINE_VISIBILITY const_iterator __make_iter(size_t __pos) const _NOEXCEPT 183 {return const_iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word);} 184 185 _LIBCPP_INLINE_VISIBILITY 186 void operator&=(const __bitset& __v) _NOEXCEPT; 187 _LIBCPP_INLINE_VISIBILITY 188 void operator|=(const __bitset& __v) _NOEXCEPT; 189 _LIBCPP_INLINE_VISIBILITY 190 void operator^=(const __bitset& __v) _NOEXCEPT; 191 192 void flip() _NOEXCEPT; 193 _LIBCPP_INLINE_VISIBILITY unsigned long to_ulong() const 194 {return to_ulong(integral_constant<bool, _Size < sizeof(unsigned long) * CHAR_BIT>());} 195 _LIBCPP_INLINE_VISIBILITY unsigned long long to_ullong() const 196 {return to_ullong(integral_constant<bool, _Size < sizeof(unsigned long long) * CHAR_BIT>());} 197 198 bool all() const _NOEXCEPT; 199 bool any() const _NOEXCEPT; 200 _LIBCPP_INLINE_VISIBILITY 201 size_t __hash_code() const _NOEXCEPT; 202 private: 203 #ifdef _LIBCPP_HAS_NO_CONSTEXPR 204 void __init(unsigned long long __v, false_type) _NOEXCEPT; 205 _LIBCPP_INLINE_VISIBILITY 206 void __init(unsigned long long __v, true_type) _NOEXCEPT; 207 #endif // _LIBCPP_HAS_NO_CONSTEXPR 208 unsigned long to_ulong(false_type) const; 209 _LIBCPP_INLINE_VISIBILITY 210 unsigned long to_ulong(true_type) const; 211 unsigned long long to_ullong(false_type) const; 212 _LIBCPP_INLINE_VISIBILITY 213 unsigned long long to_ullong(true_type) const; 214 _LIBCPP_INLINE_VISIBILITY 215 unsigned long long to_ullong(true_type, false_type) const; 216 unsigned long long to_ullong(true_type, true_type) const; 217 }; 218 219 template <size_t _N_words, size_t _Size> 220 inline 221 _LIBCPP_CONSTEXPR 222 __bitset<_N_words, _Size>::__bitset() _NOEXCEPT 223 #ifndef _LIBCPP_HAS_NO_CONSTEXPR 224 : __first_{0} 225 #endif 226 { 227 #ifdef _LIBCPP_HAS_NO_CONSTEXPR 228 _VSTD::fill_n(__first_, _N_words, __storage_type(0)); 229 #endif 230 } 231 232 #ifdef _LIBCPP_HAS_NO_CONSTEXPR 233 234 template <size_t _N_words, size_t _Size> 235 void 236 __bitset<_N_words, _Size>::__init(unsigned long long __v, false_type) _NOEXCEPT 237 { 238 __storage_type __t[sizeof(unsigned long long) / sizeof(__storage_type)]; 239 for (size_t __i = 0; __i < sizeof(__t)/sizeof(__t[0]); ++__i, __v >>= __bits_per_word) 240 __t[__i] = static_cast<__storage_type>(__v); 241 _VSTD::copy(__t, __t + sizeof(__t)/sizeof(__t[0]), __first_); 242 _VSTD::fill(__first_ + sizeof(__t)/sizeof(__t[0]), __first_ + sizeof(__first_)/sizeof(__first_[0]), 243 __storage_type(0)); 244 } 245 246 template <size_t _N_words, size_t _Size> 247 inline _LIBCPP_INLINE_VISIBILITY 248 void 249 __bitset<_N_words, _Size>::__init(unsigned long long __v, true_type) _NOEXCEPT 250 { 251 __first_[0] = __v; 252 _VSTD::fill(__first_ + 1, __first_ + sizeof(__first_)/sizeof(__first_[0]), __storage_type(0)); 253 } 254 255 #endif // _LIBCPP_HAS_NO_CONSTEXPR 256 257 template <size_t _N_words, size_t _Size> 258 inline 259 _LIBCPP_CONSTEXPR 260 __bitset<_N_words, _Size>::__bitset(unsigned long long __v) _NOEXCEPT 261 #ifndef _LIBCPP_HAS_NO_CONSTEXPR 262 #if __SIZEOF_SIZE_T__ == 8 263 : __first_{__v} 264 #elif __SIZEOF_SIZE_T__ == 4 265 : __first_{__v, __v >> __bits_per_word} 266 #else 267 #error This constructor has not been ported to this platform 268 #endif 269 #endif 270 { 271 #ifdef _LIBCPP_HAS_NO_CONSTEXPR 272 __init(__v, integral_constant<bool, sizeof(unsigned long long) == sizeof(__storage_type)>()); 273 #endif 274 } 275 276 template <size_t _N_words, size_t _Size> 277 inline 278 void 279 __bitset<_N_words, _Size>::operator&=(const __bitset& __v) _NOEXCEPT 280 { 281 for (size_type __i = 0; __i < _N_words; ++__i) 282 __first_[__i] &= __v.__first_[__i]; 283 } 284 285 template <size_t _N_words, size_t _Size> 286 inline 287 void 288 __bitset<_N_words, _Size>::operator|=(const __bitset& __v) _NOEXCEPT 289 { 290 for (size_type __i = 0; __i < _N_words; ++__i) 291 __first_[__i] |= __v.__first_[__i]; 292 } 293 294 template <size_t _N_words, size_t _Size> 295 inline 296 void 297 __bitset<_N_words, _Size>::operator^=(const __bitset& __v) _NOEXCEPT 298 { 299 for (size_type __i = 0; __i < _N_words; ++__i) 300 __first_[__i] ^= __v.__first_[__i]; 301 } 302 303 template <size_t _N_words, size_t _Size> 304 void 305 __bitset<_N_words, _Size>::flip() _NOEXCEPT 306 { 307 // do middle whole words 308 size_type __n = _Size; 309 __storage_pointer __p = __first_; 310 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 311 *__p = ~*__p; 312 // do last partial word 313 if (__n > 0) 314 { 315 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 316 __storage_type __b = *__p & __m; 317 *__p &= ~__m; 318 *__p |= ~__b & __m; 319 } 320 } 321 322 template <size_t _N_words, size_t _Size> 323 unsigned long 324 __bitset<_N_words, _Size>::to_ulong(false_type) const 325 { 326 const_iterator __e = __make_iter(_Size); 327 const_iterator __i = _VSTD::find(__make_iter(sizeof(unsigned long) * CHAR_BIT), __e, true); 328 if (__i != __e) 329 #ifndef _LIBCPP_NO_EXCEPTIONS 330 throw overflow_error("bitset to_ulong overflow error"); 331 #else 332 assert(!"bitset to_ulong overflow error"); 333 #endif 334 return __first_[0]; 335 } 336 337 template <size_t _N_words, size_t _Size> 338 inline 339 unsigned long 340 __bitset<_N_words, _Size>::to_ulong(true_type) const 341 { 342 return __first_[0]; 343 } 344 345 template <size_t _N_words, size_t _Size> 346 unsigned long long 347 __bitset<_N_words, _Size>::to_ullong(false_type) const 348 { 349 const_iterator __e = __make_iter(_Size); 350 const_iterator __i = _VSTD::find(__make_iter(sizeof(unsigned long long) * CHAR_BIT), __e, true); 351 if (__i != __e) 352 #ifndef _LIBCPP_NO_EXCEPTIONS 353 throw overflow_error("bitset to_ullong overflow error"); 354 #else 355 assert(!"bitset to_ullong overflow error"); 356 #endif 357 return to_ullong(true_type()); 358 } 359 360 template <size_t _N_words, size_t _Size> 361 inline 362 unsigned long long 363 __bitset<_N_words, _Size>::to_ullong(true_type) const 364 { 365 return to_ullong(true_type(), integral_constant<bool, sizeof(__storage_type) < sizeof(unsigned long long)>()); 366 } 367 368 template <size_t _N_words, size_t _Size> 369 inline 370 unsigned long long 371 __bitset<_N_words, _Size>::to_ullong(true_type, false_type) const 372 { 373 return __first_[0]; 374 } 375 376 template <size_t _N_words, size_t _Size> 377 unsigned long long 378 __bitset<_N_words, _Size>::to_ullong(true_type, true_type) const 379 { 380 unsigned long long __r = __first_[0]; 381 for (std::size_t __i = 1; __i < sizeof(unsigned long long) / sizeof(__storage_type); ++__i) 382 __r |= static_cast<unsigned long long>(__first_[__i]) << (sizeof(__storage_type) * CHAR_BIT); 383 return __r; 384 } 385 386 template <size_t _N_words, size_t _Size> 387 bool 388 __bitset<_N_words, _Size>::all() const _NOEXCEPT 389 { 390 // do middle whole words 391 size_type __n = _Size; 392 __const_storage_pointer __p = __first_; 393 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 394 if (~*__p) 395 return false; 396 // do last partial word 397 if (__n > 0) 398 { 399 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 400 if (~*__p & __m) 401 return false; 402 } 403 return true; 404 } 405 406 template <size_t _N_words, size_t _Size> 407 bool 408 __bitset<_N_words, _Size>::any() const _NOEXCEPT 409 { 410 // do middle whole words 411 size_type __n = _Size; 412 __const_storage_pointer __p = __first_; 413 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 414 if (*__p) 415 return true; 416 // do last partial word 417 if (__n > 0) 418 { 419 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 420 if (*__p & __m) 421 return true; 422 } 423 return false; 424 } 425 426 template <size_t _N_words, size_t _Size> 427 inline 428 size_t 429 __bitset<_N_words, _Size>::__hash_code() const _NOEXCEPT 430 { 431 size_t __h = 0; 432 for (size_type __i = 0; __i < _N_words; ++__i) 433 __h ^= __first_[__i]; 434 return __h; 435 } 436 437 template <size_t _Size> 438 class __bitset<1, _Size> 439 { 440 public: 441 typedef ptrdiff_t difference_type; 442 typedef size_t size_type; 443 typedef size_type __storage_type; 444 protected: 445 typedef __bitset __self; 446 typedef __storage_type* __storage_pointer; 447 typedef const __storage_type* __const_storage_pointer; 448 static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT); 449 450 friend class __bit_reference<__bitset>; 451 friend class __bit_const_reference<__bitset>; 452 friend class __bit_iterator<__bitset, false>; 453 friend class __bit_iterator<__bitset, true>; 454 friend struct __bit_array<__bitset>; 455 456 __storage_type __first_; 457 458 typedef __bit_reference<__bitset> reference; 459 typedef __bit_const_reference<__bitset> const_reference; 460 typedef __bit_iterator<__bitset, false> iterator; 461 typedef __bit_iterator<__bitset, true> const_iterator; 462 463 _LIBCPP_INLINE_VISIBILITY 464 _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT; 465 _LIBCPP_INLINE_VISIBILITY 466 explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT; 467 468 _LIBCPP_INLINE_VISIBILITY reference __make_ref(size_t __pos) _NOEXCEPT 469 {return reference(&__first_, __storage_type(1) << __pos);} 470 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR const_reference __make_ref(size_t __pos) const _NOEXCEPT 471 {return const_reference(&__first_, __storage_type(1) << __pos);} 472 _LIBCPP_INLINE_VISIBILITY iterator __make_iter(size_t __pos) _NOEXCEPT 473 {return iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);} 474 _LIBCPP_INLINE_VISIBILITY const_iterator __make_iter(size_t __pos) const _NOEXCEPT 475 {return const_iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);} 476 477 _LIBCPP_INLINE_VISIBILITY 478 void operator&=(const __bitset& __v) _NOEXCEPT; 479 _LIBCPP_INLINE_VISIBILITY 480 void operator|=(const __bitset& __v) _NOEXCEPT; 481 _LIBCPP_INLINE_VISIBILITY 482 void operator^=(const __bitset& __v) _NOEXCEPT; 483 484 _LIBCPP_INLINE_VISIBILITY 485 void flip() _NOEXCEPT; 486 487 _LIBCPP_INLINE_VISIBILITY 488 unsigned long to_ulong() const; 489 _LIBCPP_INLINE_VISIBILITY 490 unsigned long long to_ullong() const; 491 492 _LIBCPP_INLINE_VISIBILITY 493 bool all() const _NOEXCEPT; 494 _LIBCPP_INLINE_VISIBILITY 495 bool any() const _NOEXCEPT; 496 497 _LIBCPP_INLINE_VISIBILITY 498 size_t __hash_code() const _NOEXCEPT; 499 }; 500 501 template <size_t _Size> 502 inline 503 _LIBCPP_CONSTEXPR 504 __bitset<1, _Size>::__bitset() _NOEXCEPT 505 : __first_(0) 506 { 507 } 508 509 template <size_t _Size> 510 inline 511 _LIBCPP_CONSTEXPR 512 __bitset<1, _Size>::__bitset(unsigned long long __v) _NOEXCEPT 513 : __first_(static_cast<__storage_type>(__v)) 514 { 515 } 516 517 template <size_t _Size> 518 inline 519 void 520 __bitset<1, _Size>::operator&=(const __bitset& __v) _NOEXCEPT 521 { 522 __first_ &= __v.__first_; 523 } 524 525 template <size_t _Size> 526 inline 527 void 528 __bitset<1, _Size>::operator|=(const __bitset& __v) _NOEXCEPT 529 { 530 __first_ |= __v.__first_; 531 } 532 533 template <size_t _Size> 534 inline 535 void 536 __bitset<1, _Size>::operator^=(const __bitset& __v) _NOEXCEPT 537 { 538 __first_ ^= __v.__first_; 539 } 540 541 template <size_t _Size> 542 inline 543 void 544 __bitset<1, _Size>::flip() _NOEXCEPT 545 { 546 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 547 __first_ = ~__first_; 548 __first_ &= __m; 549 } 550 551 template <size_t _Size> 552 inline 553 unsigned long 554 __bitset<1, _Size>::to_ulong() const 555 { 556 return __first_; 557 } 558 559 template <size_t _Size> 560 inline 561 unsigned long long 562 __bitset<1, _Size>::to_ullong() const 563 { 564 return __first_; 565 } 566 567 template <size_t _Size> 568 inline 569 bool 570 __bitset<1, _Size>::all() const _NOEXCEPT 571 { 572 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 573 return !(~__first_ & __m); 574 } 575 576 template <size_t _Size> 577 inline 578 bool 579 __bitset<1, _Size>::any() const _NOEXCEPT 580 { 581 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 582 return __first_ & __m; 583 } 584 585 template <size_t _Size> 586 inline 587 size_t 588 __bitset<1, _Size>::__hash_code() const _NOEXCEPT 589 { 590 return __first_; 591 } 592 593 template <> 594 class __bitset<0, 0> 595 { 596 public: 597 typedef ptrdiff_t difference_type; 598 typedef size_t size_type; 599 typedef size_type __storage_type; 600 protected: 601 typedef __bitset __self; 602 typedef __storage_type* __storage_pointer; 603 typedef const __storage_type* __const_storage_pointer; 604 static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT); 605 606 friend class __bit_reference<__bitset>; 607 friend class __bit_const_reference<__bitset>; 608 friend class __bit_iterator<__bitset, false>; 609 friend class __bit_iterator<__bitset, true>; 610 friend struct __bit_array<__bitset>; 611 612 typedef __bit_reference<__bitset> reference; 613 typedef __bit_const_reference<__bitset> const_reference; 614 typedef __bit_iterator<__bitset, false> iterator; 615 typedef __bit_iterator<__bitset, true> const_iterator; 616 617 _LIBCPP_INLINE_VISIBILITY 618 _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT; 619 _LIBCPP_INLINE_VISIBILITY 620 explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long) _NOEXCEPT; 621 622 _LIBCPP_INLINE_VISIBILITY reference __make_ref(size_t) _NOEXCEPT 623 {return reference(0, 1);} 624 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR const_reference __make_ref(size_t) const _NOEXCEPT 625 {return const_reference(0, 1);} 626 _LIBCPP_INLINE_VISIBILITY iterator __make_iter(size_t) _NOEXCEPT 627 {return iterator(0, 0);} 628 _LIBCPP_INLINE_VISIBILITY const_iterator __make_iter(size_t) const _NOEXCEPT 629 {return const_iterator(0, 0);} 630 631 _LIBCPP_INLINE_VISIBILITY void operator&=(const __bitset&) _NOEXCEPT {} 632 _LIBCPP_INLINE_VISIBILITY void operator|=(const __bitset&) _NOEXCEPT {} 633 _LIBCPP_INLINE_VISIBILITY void operator^=(const __bitset&) _NOEXCEPT {} 634 635 _LIBCPP_INLINE_VISIBILITY void flip() _NOEXCEPT {} 636 637 _LIBCPP_INLINE_VISIBILITY unsigned long to_ulong() const {return 0;} 638 _LIBCPP_INLINE_VISIBILITY unsigned long long to_ullong() const {return 0;} 639 640 _LIBCPP_INLINE_VISIBILITY bool all() const _NOEXCEPT {return true;} 641 _LIBCPP_INLINE_VISIBILITY bool any() const _NOEXCEPT {return false;} 642 643 _LIBCPP_INLINE_VISIBILITY size_t __hash_code() const _NOEXCEPT {return 0;} 644 }; 645 646 inline 647 _LIBCPP_CONSTEXPR 648 __bitset<0, 0>::__bitset() _NOEXCEPT 649 { 650 } 651 652 inline 653 _LIBCPP_CONSTEXPR 654 __bitset<0, 0>::__bitset(unsigned long long) _NOEXCEPT 655 { 656 } 657 658 template <size_t _Size> class _LIBCPP_TYPE_VIS_ONLY bitset; 659 template <size_t _Size> struct hash<bitset<_Size> >; 660 661 template <size_t _Size> 662 class _LIBCPP_TYPE_VIS_ONLY bitset 663 : private __bitset<_Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1, _Size> 664 { 665 public: 666 static const unsigned __n_words = _Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1; 667 typedef __bitset<__n_words, _Size> base; 668 669 public: 670 typedef typename base::reference reference; 671 typedef typename base::const_reference const_reference; 672 673 // 23.3.5.1 constructors: 674 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR bitset() _NOEXCEPT {} 675 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 676 bitset(unsigned long long __v) _NOEXCEPT : base(__v) {} 677 template<class _CharT> 678 explicit bitset(const _CharT* __str, 679 typename basic_string<_CharT>::size_type __n = basic_string<_CharT>::npos, 680 _CharT __zero = _CharT('0'), _CharT __one = _CharT('1')); 681 template<class _CharT, class _Traits, class _Allocator> 682 explicit bitset(const basic_string<_CharT,_Traits,_Allocator>& __str, 683 typename basic_string<_CharT,_Traits,_Allocator>::size_type __pos = 0, 684 typename basic_string<_CharT,_Traits,_Allocator>::size_type __n = 685 (basic_string<_CharT,_Traits,_Allocator>::npos), 686 _CharT __zero = _CharT('0'), _CharT __one = _CharT('1')); 687 688 // 23.3.5.2 bitset operations: 689 _LIBCPP_INLINE_VISIBILITY 690 bitset& operator&=(const bitset& __rhs) _NOEXCEPT; 691 _LIBCPP_INLINE_VISIBILITY 692 bitset& operator|=(const bitset& __rhs) _NOEXCEPT; 693 _LIBCPP_INLINE_VISIBILITY 694 bitset& operator^=(const bitset& __rhs) _NOEXCEPT; 695 bitset& operator<<=(size_t __pos) _NOEXCEPT; 696 bitset& operator>>=(size_t __pos) _NOEXCEPT; 697 _LIBCPP_INLINE_VISIBILITY 698 bitset& set() _NOEXCEPT; 699 bitset& set(size_t __pos, bool __val = true); 700 _LIBCPP_INLINE_VISIBILITY 701 bitset& reset() _NOEXCEPT; 702 bitset& reset(size_t __pos); 703 _LIBCPP_INLINE_VISIBILITY 704 bitset operator~() const _NOEXCEPT; 705 _LIBCPP_INLINE_VISIBILITY 706 bitset& flip() _NOEXCEPT; 707 bitset& flip(size_t __pos); 708 709 // element access: 710 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 711 const_reference operator[](size_t __p) const {return base::__make_ref(__p);} 712 _LIBCPP_INLINE_VISIBILITY reference operator[](size_t __p) {return base::__make_ref(__p);} 713 _LIBCPP_INLINE_VISIBILITY 714 unsigned long to_ulong() const; 715 _LIBCPP_INLINE_VISIBILITY 716 unsigned long long to_ullong() const; 717 template <class _CharT, class _Traits, class _Allocator> 718 basic_string<_CharT, _Traits, _Allocator> to_string(_CharT __zero = _CharT('0'), 719 _CharT __one = _CharT('1')) const; 720 template <class _CharT, class _Traits> 721 _LIBCPP_INLINE_VISIBILITY 722 basic_string<_CharT, _Traits, allocator<_CharT> > to_string(_CharT __zero = _CharT('0'), 723 _CharT __one = _CharT('1')) const; 724 template <class _CharT> 725 _LIBCPP_INLINE_VISIBILITY 726 basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> > to_string(_CharT __zero = _CharT('0'), 727 _CharT __one = _CharT('1')) const; 728 _LIBCPP_INLINE_VISIBILITY 729 basic_string<char, char_traits<char>, allocator<char> > to_string(char __zero = '0', 730 char __one = '1') const; 731 _LIBCPP_INLINE_VISIBILITY 732 size_t count() const _NOEXCEPT; 733 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR size_t size() const _NOEXCEPT {return _Size;} 734 _LIBCPP_INLINE_VISIBILITY 735 bool operator==(const bitset& __rhs) const _NOEXCEPT; 736 _LIBCPP_INLINE_VISIBILITY 737 bool operator!=(const bitset& __rhs) const _NOEXCEPT; 738 bool test(size_t __pos) const; 739 _LIBCPP_INLINE_VISIBILITY 740 bool all() const _NOEXCEPT; 741 _LIBCPP_INLINE_VISIBILITY 742 bool any() const _NOEXCEPT; 743 _LIBCPP_INLINE_VISIBILITY bool none() const _NOEXCEPT {return !any();} 744 _LIBCPP_INLINE_VISIBILITY 745 bitset operator<<(size_t __pos) const _NOEXCEPT; 746 _LIBCPP_INLINE_VISIBILITY 747 bitset operator>>(size_t __pos) const _NOEXCEPT; 748 749 private: 750 751 _LIBCPP_INLINE_VISIBILITY 752 size_t __hash_code() const _NOEXCEPT {return base::__hash_code();} 753 754 friend struct hash<bitset>; 755 }; 756 757 template <size_t _Size> 758 template<class _CharT> 759 bitset<_Size>::bitset(const _CharT* __str, 760 typename basic_string<_CharT>::size_type __n, 761 _CharT __zero, _CharT __one) 762 { 763 size_t __rlen = _VSTD::min(__n, char_traits<_CharT>::length(__str)); 764 for (size_t __i = 0; __i < __rlen; ++__i) 765 if (__str[__i] != __zero && __str[__i] != __one) 766 #ifndef _LIBCPP_NO_EXCEPTIONS 767 throw invalid_argument("bitset string ctor has invalid argument"); 768 #else 769 assert(!"bitset string ctor has invalid argument"); 770 #endif 771 size_t _Mp = _VSTD::min(__rlen, _Size); 772 size_t __i = 0; 773 for (; __i < _Mp; ++__i) 774 { 775 _CharT __c = __str[_Mp - 1 - __i]; 776 if (__c == __zero) 777 (*this)[__i] = false; 778 else 779 (*this)[__i] = true; 780 } 781 _VSTD::fill(base::__make_iter(__i), base::__make_iter(_Size), false); 782 } 783 784 template <size_t _Size> 785 template<class _CharT, class _Traits, class _Allocator> 786 bitset<_Size>::bitset(const basic_string<_CharT,_Traits,_Allocator>& __str, 787 typename basic_string<_CharT,_Traits,_Allocator>::size_type __pos, 788 typename basic_string<_CharT,_Traits,_Allocator>::size_type __n, 789 _CharT __zero, _CharT __one) 790 { 791 if (__pos > __str.size()) 792 #ifndef _LIBCPP_NO_EXCEPTIONS 793 throw out_of_range("bitset string pos out of range"); 794 #else 795 assert(!"bitset string pos out of range"); 796 #endif 797 size_t __rlen = _VSTD::min(__n, __str.size() - __pos); 798 for (size_t __i = __pos; __i < __pos + __rlen; ++__i) 799 if (!_Traits::eq(__str[__i], __zero) && !_Traits::eq(__str[__i], __one)) 800 #ifndef _LIBCPP_NO_EXCEPTIONS 801 throw invalid_argument("bitset string ctor has invalid argument"); 802 #else 803 assert(!"bitset string ctor has invalid argument"); 804 #endif 805 size_t _Mp = _VSTD::min(__rlen, _Size); 806 size_t __i = 0; 807 for (; __i < _Mp; ++__i) 808 { 809 _CharT __c = __str[__pos + _Mp - 1 - __i]; 810 if (_Traits::eq(__c, __zero)) 811 (*this)[__i] = false; 812 else 813 (*this)[__i] = true; 814 } 815 _VSTD::fill(base::__make_iter(__i), base::__make_iter(_Size), false); 816 } 817 818 template <size_t _Size> 819 inline 820 bitset<_Size>& 821 bitset<_Size>::operator&=(const bitset& __rhs) _NOEXCEPT 822 { 823 base::operator&=(__rhs); 824 return *this; 825 } 826 827 template <size_t _Size> 828 inline 829 bitset<_Size>& 830 bitset<_Size>::operator|=(const bitset& __rhs) _NOEXCEPT 831 { 832 base::operator|=(__rhs); 833 return *this; 834 } 835 836 template <size_t _Size> 837 inline 838 bitset<_Size>& 839 bitset<_Size>::operator^=(const bitset& __rhs) _NOEXCEPT 840 { 841 base::operator^=(__rhs); 842 return *this; 843 } 844 845 template <size_t _Size> 846 bitset<_Size>& 847 bitset<_Size>::operator<<=(size_t __pos) _NOEXCEPT 848 { 849 __pos = _VSTD::min(__pos, _Size); 850 _VSTD::copy_backward(base::__make_iter(0), base::__make_iter(_Size - __pos), base::__make_iter(_Size)); 851 _VSTD::fill_n(base::__make_iter(0), __pos, false); 852 return *this; 853 } 854 855 template <size_t _Size> 856 bitset<_Size>& 857 bitset<_Size>::operator>>=(size_t __pos) _NOEXCEPT 858 { 859 __pos = _VSTD::min(__pos, _Size); 860 _VSTD::copy(base::__make_iter(__pos), base::__make_iter(_Size), base::__make_iter(0)); 861 _VSTD::fill_n(base::__make_iter(_Size - __pos), __pos, false); 862 return *this; 863 } 864 865 template <size_t _Size> 866 inline 867 bitset<_Size>& 868 bitset<_Size>::set() _NOEXCEPT 869 { 870 _VSTD::fill_n(base::__make_iter(0), _Size, true); 871 return *this; 872 } 873 874 template <size_t _Size> 875 bitset<_Size>& 876 bitset<_Size>::set(size_t __pos, bool __val) 877 { 878 if (__pos >= _Size) 879 #ifndef _LIBCPP_NO_EXCEPTIONS 880 throw out_of_range("bitset set argument out of range"); 881 #else 882 assert(!"bitset set argument out of range"); 883 #endif 884 (*this)[__pos] = __val; 885 return *this; 886 } 887 888 template <size_t _Size> 889 inline 890 bitset<_Size>& 891 bitset<_Size>::reset() _NOEXCEPT 892 { 893 _VSTD::fill_n(base::__make_iter(0), _Size, false); 894 return *this; 895 } 896 897 template <size_t _Size> 898 bitset<_Size>& 899 bitset<_Size>::reset(size_t __pos) 900 { 901 if (__pos >= _Size) 902 #ifndef _LIBCPP_NO_EXCEPTIONS 903 throw out_of_range("bitset reset argument out of range"); 904 #else 905 assert(!"bitset reset argument out of range"); 906 #endif 907 (*this)[__pos] = false; 908 return *this; 909 } 910 911 template <size_t _Size> 912 inline 913 bitset<_Size> 914 bitset<_Size>::operator~() const _NOEXCEPT 915 { 916 bitset __x(*this); 917 __x.flip(); 918 return __x; 919 } 920 921 template <size_t _Size> 922 inline 923 bitset<_Size>& 924 bitset<_Size>::flip() _NOEXCEPT 925 { 926 base::flip(); 927 return *this; 928 } 929 930 template <size_t _Size> 931 bitset<_Size>& 932 bitset<_Size>::flip(size_t __pos) 933 { 934 if (__pos >= _Size) 935 #ifndef _LIBCPP_NO_EXCEPTIONS 936 throw out_of_range("bitset flip argument out of range"); 937 #else 938 assert(!"bitset flip argument out of range"); 939 #endif 940 reference r = base::__make_ref(__pos); 941 r = ~r; 942 return *this; 943 } 944 945 template <size_t _Size> 946 inline 947 unsigned long 948 bitset<_Size>::to_ulong() const 949 { 950 return base::to_ulong(); 951 } 952 953 template <size_t _Size> 954 inline 955 unsigned long long 956 bitset<_Size>::to_ullong() const 957 { 958 return base::to_ullong(); 959 } 960 961 template <size_t _Size> 962 template <class _CharT, class _Traits, class _Allocator> 963 basic_string<_CharT, _Traits, _Allocator> 964 bitset<_Size>::to_string(_CharT __zero, _CharT __one) const 965 { 966 basic_string<_CharT, _Traits, _Allocator> __r(_Size, __zero); 967 for (size_t __i = 0; __i < _Size; ++__i) 968 { 969 if ((*this)[__i]) 970 __r[_Size - 1 - __i] = __one; 971 } 972 return __r; 973 } 974 975 template <size_t _Size> 976 template <class _CharT, class _Traits> 977 inline 978 basic_string<_CharT, _Traits, allocator<_CharT> > 979 bitset<_Size>::to_string(_CharT __zero, _CharT __one) const 980 { 981 return to_string<_CharT, _Traits, allocator<_CharT> >(__zero, __one); 982 } 983 984 template <size_t _Size> 985 template <class _CharT> 986 inline 987 basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> > 988 bitset<_Size>::to_string(_CharT __zero, _CharT __one) const 989 { 990 return to_string<_CharT, char_traits<_CharT>, allocator<_CharT> >(__zero, __one); 991 } 992 993 template <size_t _Size> 994 inline 995 basic_string<char, char_traits<char>, allocator<char> > 996 bitset<_Size>::to_string(char __zero, char __one) const 997 { 998 return to_string<char, char_traits<char>, allocator<char> >(__zero, __one); 999 } 1000 1001 template <size_t _Size> 1002 inline 1003 size_t 1004 bitset<_Size>::count() const _NOEXCEPT 1005 { 1006 return static_cast<size_t>(_VSTD::count(base::__make_iter(0), base::__make_iter(_Size), true)); 1007 } 1008 1009 template <size_t _Size> 1010 inline 1011 bool 1012 bitset<_Size>::operator==(const bitset& __rhs) const _NOEXCEPT 1013 { 1014 return _VSTD::equal(base::__make_iter(0), base::__make_iter(_Size), __rhs.__make_iter(0)); 1015 } 1016 1017 template <size_t _Size> 1018 inline 1019 bool 1020 bitset<_Size>::operator!=(const bitset& __rhs) const _NOEXCEPT 1021 { 1022 return !(*this == __rhs); 1023 } 1024 1025 template <size_t _Size> 1026 bool 1027 bitset<_Size>::test(size_t __pos) const 1028 { 1029 if (__pos >= _Size) 1030 #ifndef _LIBCPP_NO_EXCEPTIONS 1031 throw out_of_range("bitset test argument out of range"); 1032 #else 1033 assert(!"bitset test argument out of range"); 1034 #endif 1035 return (*this)[__pos]; 1036 } 1037 1038 template <size_t _Size> 1039 inline 1040 bool 1041 bitset<_Size>::all() const _NOEXCEPT 1042 { 1043 return base::all(); 1044 } 1045 1046 template <size_t _Size> 1047 inline 1048 bool 1049 bitset<_Size>::any() const _NOEXCEPT 1050 { 1051 return base::any(); 1052 } 1053 1054 template <size_t _Size> 1055 inline 1056 bitset<_Size> 1057 bitset<_Size>::operator<<(size_t __pos) const _NOEXCEPT 1058 { 1059 bitset __r = *this; 1060 __r <<= __pos; 1061 return __r; 1062 } 1063 1064 template <size_t _Size> 1065 inline 1066 bitset<_Size> 1067 bitset<_Size>::operator>>(size_t __pos) const _NOEXCEPT 1068 { 1069 bitset __r = *this; 1070 __r >>= __pos; 1071 return __r; 1072 } 1073 1074 template <size_t _Size> 1075 inline _LIBCPP_INLINE_VISIBILITY 1076 bitset<_Size> 1077 operator&(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT 1078 { 1079 bitset<_Size> __r = __x; 1080 __r &= __y; 1081 return __r; 1082 } 1083 1084 template <size_t _Size> 1085 inline _LIBCPP_INLINE_VISIBILITY 1086 bitset<_Size> 1087 operator|(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT 1088 { 1089 bitset<_Size> __r = __x; 1090 __r |= __y; 1091 return __r; 1092 } 1093 1094 template <size_t _Size> 1095 inline _LIBCPP_INLINE_VISIBILITY 1096 bitset<_Size> 1097 operator^(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT 1098 { 1099 bitset<_Size> __r = __x; 1100 __r ^= __y; 1101 return __r; 1102 } 1103 1104 template <size_t _Size> 1105 struct _LIBCPP_TYPE_VIS_ONLY hash<bitset<_Size> > 1106 : public unary_function<bitset<_Size>, size_t> 1107 { 1108 _LIBCPP_INLINE_VISIBILITY 1109 size_t operator()(const bitset<_Size>& __bs) const _NOEXCEPT 1110 {return __bs.__hash_code();} 1111 }; 1112 1113 template <class _CharT, class _Traits, size_t _Size> 1114 basic_istream<_CharT, _Traits>& 1115 operator>>(basic_istream<_CharT, _Traits>& __is, bitset<_Size>& __x); 1116 1117 template <class _CharT, class _Traits, size_t _Size> 1118 basic_ostream<_CharT, _Traits>& 1119 operator<<(basic_ostream<_CharT, _Traits>& __os, const bitset<_Size>& __x); 1120 1121 _LIBCPP_END_NAMESPACE_STD 1122 1123 #endif // _LIBCPP_BITSET 1124
