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_CONSTEXPR __bitset() _NOEXCEPT; 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 void operator&=(const __bitset& __v) _NOEXCEPT; 184 void operator|=(const __bitset& __v) _NOEXCEPT; 185 void operator^=(const __bitset& __v) _NOEXCEPT; 186 187 void flip() _NOEXCEPT; 188 _LIBCPP_INLINE_VISIBILITY unsigned long to_ulong() const 189 {return to_ulong(integral_constant<bool, _Size < sizeof(unsigned long) * CHAR_BIT>());} 190 _LIBCPP_INLINE_VISIBILITY unsigned long long to_ullong() const 191 {return to_ullong(integral_constant<bool, _Size < sizeof(unsigned long long) * CHAR_BIT>());} 192 193 bool all() const _NOEXCEPT; 194 bool any() const _NOEXCEPT; 195 size_t __hash_code() const _NOEXCEPT; 196 private: 197 #ifdef _LIBCPP_HAS_NO_CONSTEXPR 198 void __init(unsigned long long __v, false_type) _NOEXCEPT; 199 void __init(unsigned long long __v, true_type) _NOEXCEPT; 200 #endif // _LIBCPP_HAS_NO_CONSTEXPR 201 unsigned long to_ulong(false_type) const; 202 unsigned long to_ulong(true_type) const; 203 unsigned long long to_ullong(false_type) const; 204 unsigned long long to_ullong(true_type) const; 205 unsigned long long to_ullong(true_type, false_type) const; 206 unsigned long long to_ullong(true_type, true_type) const; 207 }; 208 209 template <size_t _N_words, size_t _Size> 210 inline _LIBCPP_INLINE_VISIBILITY 211 _LIBCPP_CONSTEXPR 212 __bitset<_N_words, _Size>::__bitset() _NOEXCEPT 213 #ifndef _LIBCPP_HAS_NO_CONSTEXPR 214 : __first_{0} 215 #endif 216 { 217 #ifdef _LIBCPP_HAS_NO_CONSTEXPR 218 _VSTD::fill_n(__first_, _N_words, __storage_type(0)); 219 #endif 220 } 221 222 #ifdef _LIBCPP_HAS_NO_CONSTEXPR 223 224 template <size_t _N_words, size_t _Size> 225 void 226 __bitset<_N_words, _Size>::__init(unsigned long long __v, false_type) _NOEXCEPT 227 { 228 __storage_type __t[sizeof(unsigned long long) / sizeof(__storage_type)]; 229 for (size_t __i = 0; __i < sizeof(__t)/sizeof(__t[0]); ++__i, __v >>= __bits_per_word) 230 __t[__i] = static_cast<__storage_type>(__v); 231 _VSTD::copy(__t, __t + sizeof(__t)/sizeof(__t[0]), __first_); 232 _VSTD::fill(__first_ + sizeof(__t)/sizeof(__t[0]), __first_ + sizeof(__first_)/sizeof(__first_[0]), 233 __storage_type(0)); 234 } 235 236 template <size_t _N_words, size_t _Size> 237 inline _LIBCPP_INLINE_VISIBILITY 238 void 239 __bitset<_N_words, _Size>::__init(unsigned long long __v, true_type) _NOEXCEPT 240 { 241 __first_[0] = __v; 242 _VSTD::fill(__first_ + 1, __first_ + sizeof(__first_)/sizeof(__first_[0]), __storage_type(0)); 243 } 244 245 #endif // _LIBCPP_HAS_NO_CONSTEXPR 246 247 template <size_t _N_words, size_t _Size> 248 inline _LIBCPP_INLINE_VISIBILITY 249 _LIBCPP_CONSTEXPR 250 __bitset<_N_words, _Size>::__bitset(unsigned long long __v) _NOEXCEPT 251 #ifndef _LIBCPP_HAS_NO_CONSTEXPR 252 : __first_{__v} 253 #endif 254 { 255 #ifdef _LIBCPP_HAS_NO_CONSTEXPR 256 __init(__v, integral_constant<bool, sizeof(unsigned long long) == sizeof(__storage_type)>()); 257 #endif 258 } 259 260 template <size_t _N_words, size_t _Size> 261 inline _LIBCPP_INLINE_VISIBILITY 262 void 263 __bitset<_N_words, _Size>::operator&=(const __bitset& __v) _NOEXCEPT 264 { 265 for (size_type __i = 0; __i < _N_words; ++__i) 266 __first_[__i] &= __v.__first_[__i]; 267 } 268 269 template <size_t _N_words, size_t _Size> 270 inline _LIBCPP_INLINE_VISIBILITY 271 void 272 __bitset<_N_words, _Size>::operator|=(const __bitset& __v) _NOEXCEPT 273 { 274 for (size_type __i = 0; __i < _N_words; ++__i) 275 __first_[__i] |= __v.__first_[__i]; 276 } 277 278 template <size_t _N_words, size_t _Size> 279 inline _LIBCPP_INLINE_VISIBILITY 280 void 281 __bitset<_N_words, _Size>::operator^=(const __bitset& __v) _NOEXCEPT 282 { 283 for (size_type __i = 0; __i < _N_words; ++__i) 284 __first_[__i] ^= __v.__first_[__i]; 285 } 286 287 template <size_t _N_words, size_t _Size> 288 void 289 __bitset<_N_words, _Size>::flip() _NOEXCEPT 290 { 291 // do middle whole words 292 size_type __n = _Size; 293 __storage_pointer __p = __first_; 294 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 295 *__p = ~*__p; 296 // do last partial word 297 if (__n > 0) 298 { 299 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 300 __storage_type __b = *__p & __m; 301 *__p &= ~__m; 302 *__p |= ~__b & __m; 303 } 304 } 305 306 template <size_t _N_words, size_t _Size> 307 unsigned long 308 __bitset<_N_words, _Size>::to_ulong(false_type) const 309 { 310 const_iterator __e = __make_iter(_Size); 311 const_iterator __i = _VSTD::find(__make_iter(sizeof(unsigned long) * CHAR_BIT), __e, true); 312 if (__i != __e) 313 #ifndef _LIBCPP_NO_EXCEPTIONS 314 throw overflow_error("bitset to_ulong overflow error"); 315 #else 316 assert(!"bitset to_ulong overflow error"); 317 #endif 318 return __first_[0]; 319 } 320 321 template <size_t _N_words, size_t _Size> 322 inline _LIBCPP_INLINE_VISIBILITY 323 unsigned long 324 __bitset<_N_words, _Size>::to_ulong(true_type) const 325 { 326 return __first_[0]; 327 } 328 329 template <size_t _N_words, size_t _Size> 330 unsigned long long 331 __bitset<_N_words, _Size>::to_ullong(false_type) const 332 { 333 const_iterator __e = __make_iter(_Size); 334 const_iterator __i = _VSTD::find(__make_iter(sizeof(unsigned long long) * CHAR_BIT), __e, true); 335 if (__i != __e) 336 #ifndef _LIBCPP_NO_EXCEPTIONS 337 throw overflow_error("bitset to_ullong overflow error"); 338 #else 339 assert(!"bitset to_ullong overflow error"); 340 #endif 341 return to_ullong(true_type()); 342 } 343 344 template <size_t _N_words, size_t _Size> 345 inline _LIBCPP_INLINE_VISIBILITY 346 unsigned long long 347 __bitset<_N_words, _Size>::to_ullong(true_type) const 348 { 349 return to_ullong(true_type(), integral_constant<bool, sizeof(__storage_type) < sizeof(unsigned long long)>()); 350 } 351 352 template <size_t _N_words, size_t _Size> 353 inline _LIBCPP_INLINE_VISIBILITY 354 unsigned long long 355 __bitset<_N_words, _Size>::to_ullong(true_type, false_type) const 356 { 357 return __first_[0]; 358 } 359 360 template <size_t _N_words, size_t _Size> 361 unsigned long long 362 __bitset<_N_words, _Size>::to_ullong(true_type, true_type) const 363 { 364 unsigned long long __r = __first_[0]; 365 for (std::size_t __i = 1; __i < sizeof(unsigned long long) / sizeof(__storage_type); ++__i) 366 __r |= static_cast<unsigned long long>(__first_[__i]) << (sizeof(__storage_type) * CHAR_BIT); 367 return __r; 368 } 369 370 template <size_t _N_words, size_t _Size> 371 bool 372 __bitset<_N_words, _Size>::all() const _NOEXCEPT 373 { 374 // do middle whole words 375 size_type __n = _Size; 376 __const_storage_pointer __p = __first_; 377 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 378 if (~*__p) 379 return false; 380 // do last partial word 381 if (__n > 0) 382 { 383 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 384 if (~*__p & __m) 385 return false; 386 } 387 return true; 388 } 389 390 template <size_t _N_words, size_t _Size> 391 bool 392 __bitset<_N_words, _Size>::any() const _NOEXCEPT 393 { 394 // do middle whole words 395 size_type __n = _Size; 396 __const_storage_pointer __p = __first_; 397 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 398 if (*__p) 399 return true; 400 // do last partial word 401 if (__n > 0) 402 { 403 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 404 if (*__p & __m) 405 return true; 406 } 407 return false; 408 } 409 410 template <size_t _N_words, size_t _Size> 411 inline _LIBCPP_INLINE_VISIBILITY 412 size_t 413 __bitset<_N_words, _Size>::__hash_code() const _NOEXCEPT 414 { 415 size_t __h = 0; 416 for (size_type __i = 0; __i < _N_words; ++__i) 417 __h ^= __first_[__i]; 418 return __h; 419 } 420 421 template <size_t _Size> 422 class __bitset<1, _Size> 423 { 424 public: 425 typedef ptrdiff_t difference_type; 426 typedef size_t size_type; 427 typedef size_type __storage_type; 428 protected: 429 typedef __bitset __self; 430 typedef __storage_type* __storage_pointer; 431 typedef const __storage_type* __const_storage_pointer; 432 static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT); 433 434 friend class __bit_reference<__bitset>; 435 friend class __bit_const_reference<__bitset>; 436 friend class __bit_iterator<__bitset, false>; 437 friend class __bit_iterator<__bitset, true>; 438 friend struct __bit_array<__bitset>; 439 440 __storage_type __first_; 441 442 typedef __bit_reference<__bitset> reference; 443 typedef __bit_const_reference<__bitset> const_reference; 444 typedef __bit_iterator<__bitset, false> iterator; 445 typedef __bit_iterator<__bitset, true> const_iterator; 446 447 _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT; 448 explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT; 449 450 _LIBCPP_INLINE_VISIBILITY reference __make_ref(size_t __pos) _NOEXCEPT 451 {return reference(&__first_, __storage_type(1) << __pos);} 452 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR const_reference __make_ref(size_t __pos) const _NOEXCEPT 453 {return const_reference(&__first_, __storage_type(1) << __pos);} 454 _LIBCPP_INLINE_VISIBILITY iterator __make_iter(size_t __pos) _NOEXCEPT 455 {return iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);} 456 _LIBCPP_INLINE_VISIBILITY const_iterator __make_iter(size_t __pos) const _NOEXCEPT 457 {return const_iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);} 458 459 void operator&=(const __bitset& __v) _NOEXCEPT; 460 void operator|=(const __bitset& __v) _NOEXCEPT; 461 void operator^=(const __bitset& __v) _NOEXCEPT; 462 463 void flip() _NOEXCEPT; 464 465 unsigned long to_ulong() const; 466 unsigned long long to_ullong() const; 467 468 bool all() const _NOEXCEPT; 469 bool any() const _NOEXCEPT; 470 471 size_t __hash_code() const _NOEXCEPT; 472 }; 473 474 template <size_t _Size> 475 inline _LIBCPP_INLINE_VISIBILITY 476 _LIBCPP_CONSTEXPR 477 __bitset<1, _Size>::__bitset() _NOEXCEPT 478 : __first_(0) 479 { 480 } 481 482 template <size_t _Size> 483 inline _LIBCPP_INLINE_VISIBILITY 484 _LIBCPP_CONSTEXPR 485 __bitset<1, _Size>::__bitset(unsigned long long __v) _NOEXCEPT 486 : __first_(static_cast<__storage_type>(__v)) 487 { 488 } 489 490 template <size_t _Size> 491 inline _LIBCPP_INLINE_VISIBILITY 492 void 493 __bitset<1, _Size>::operator&=(const __bitset& __v) _NOEXCEPT 494 { 495 __first_ &= __v.__first_; 496 } 497 498 template <size_t _Size> 499 inline _LIBCPP_INLINE_VISIBILITY 500 void 501 __bitset<1, _Size>::operator|=(const __bitset& __v) _NOEXCEPT 502 { 503 __first_ |= __v.__first_; 504 } 505 506 template <size_t _Size> 507 inline _LIBCPP_INLINE_VISIBILITY 508 void 509 __bitset<1, _Size>::operator^=(const __bitset& __v) _NOEXCEPT 510 { 511 __first_ ^= __v.__first_; 512 } 513 514 template <size_t _Size> 515 inline _LIBCPP_INLINE_VISIBILITY 516 void 517 __bitset<1, _Size>::flip() _NOEXCEPT 518 { 519 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 520 __first_ = ~__first_; 521 __first_ &= __m; 522 } 523 524 template <size_t _Size> 525 inline _LIBCPP_INLINE_VISIBILITY 526 unsigned long 527 __bitset<1, _Size>::to_ulong() const 528 { 529 return __first_; 530 } 531 532 template <size_t _Size> 533 inline _LIBCPP_INLINE_VISIBILITY 534 unsigned long long 535 __bitset<1, _Size>::to_ullong() const 536 { 537 return __first_; 538 } 539 540 template <size_t _Size> 541 inline _LIBCPP_INLINE_VISIBILITY 542 bool 543 __bitset<1, _Size>::all() const _NOEXCEPT 544 { 545 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 546 return !(~__first_ & __m); 547 } 548 549 template <size_t _Size> 550 inline _LIBCPP_INLINE_VISIBILITY 551 bool 552 __bitset<1, _Size>::any() const _NOEXCEPT 553 { 554 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 555 return __first_ & __m; 556 } 557 558 template <size_t _Size> 559 inline _LIBCPP_INLINE_VISIBILITY 560 size_t 561 __bitset<1, _Size>::__hash_code() const _NOEXCEPT 562 { 563 return __first_; 564 } 565 566 template <> 567 class __bitset<0, 0> 568 { 569 public: 570 typedef ptrdiff_t difference_type; 571 typedef size_t size_type; 572 typedef size_type __storage_type; 573 protected: 574 typedef __bitset __self; 575 typedef __storage_type* __storage_pointer; 576 typedef const __storage_type* __const_storage_pointer; 577 static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT); 578 579 friend class __bit_reference<__bitset>; 580 friend class __bit_const_reference<__bitset>; 581 friend class __bit_iterator<__bitset, false>; 582 friend class __bit_iterator<__bitset, true>; 583 friend struct __bit_array<__bitset>; 584 585 typedef __bit_reference<__bitset> reference; 586 typedef __bit_const_reference<__bitset> const_reference; 587 typedef __bit_iterator<__bitset, false> iterator; 588 typedef __bit_iterator<__bitset, true> const_iterator; 589 590 _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT; 591 explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long) _NOEXCEPT; 592 593 _LIBCPP_INLINE_VISIBILITY reference __make_ref(size_t) _NOEXCEPT 594 {return reference(0, 1);} 595 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR const_reference __make_ref(size_t) const _NOEXCEPT 596 {return const_reference(0, 1);} 597 _LIBCPP_INLINE_VISIBILITY iterator __make_iter(size_t) _NOEXCEPT 598 {return iterator(0, 0);} 599 _LIBCPP_INLINE_VISIBILITY const_iterator __make_iter(size_t) const _NOEXCEPT 600 {return const_iterator(0, 0);} 601 602 _LIBCPP_INLINE_VISIBILITY void operator&=(const __bitset&) _NOEXCEPT {} 603 _LIBCPP_INLINE_VISIBILITY void operator|=(const __bitset&) _NOEXCEPT {} 604 _LIBCPP_INLINE_VISIBILITY void operator^=(const __bitset&) _NOEXCEPT {} 605 606 _LIBCPP_INLINE_VISIBILITY void flip() _NOEXCEPT {} 607 608 _LIBCPP_INLINE_VISIBILITY unsigned long to_ulong() const {return 0;} 609 _LIBCPP_INLINE_VISIBILITY unsigned long long to_ullong() const {return 0;} 610 611 _LIBCPP_INLINE_VISIBILITY bool all() const _NOEXCEPT {return true;} 612 _LIBCPP_INLINE_VISIBILITY bool any() const _NOEXCEPT {return false;} 613 614 _LIBCPP_INLINE_VISIBILITY size_t __hash_code() const _NOEXCEPT {return 0;} 615 }; 616 617 inline _LIBCPP_INLINE_VISIBILITY 618 _LIBCPP_CONSTEXPR 619 __bitset<0, 0>::__bitset() _NOEXCEPT 620 { 621 } 622 623 inline _LIBCPP_INLINE_VISIBILITY 624 _LIBCPP_CONSTEXPR 625 __bitset<0, 0>::__bitset(unsigned long long) _NOEXCEPT 626 { 627 } 628 629 template <size_t _Size> class _LIBCPP_VISIBLE bitset; 630 template <size_t _Size> struct hash<bitset<_Size> >; 631 632 template <size_t _Size> 633 class _LIBCPP_VISIBLE bitset 634 : private __bitset<_Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1, _Size> 635 { 636 static const unsigned __n_words = _Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1; 637 typedef __bitset<__n_words, _Size> base; 638 639 public: 640 typedef typename base::reference reference; 641 typedef typename base::const_reference const_reference; 642 643 // 23.3.5.1 constructors: 644 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR bitset() _NOEXCEPT {} 645 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 646 bitset(unsigned long long __v) _NOEXCEPT : base(__v) {} 647 template<class _CharT> 648 explicit bitset(const _CharT* __str, 649 typename basic_string<_CharT>::size_type __n = basic_string<_CharT>::npos, 650 _CharT __zero = _CharT('0'), _CharT __one = _CharT('1')); 651 template<class _CharT, class _Traits, class _Allocator> 652 explicit bitset(const basic_string<_CharT,_Traits,_Allocator>& __str, 653 typename basic_string<_CharT,_Traits,_Allocator>::size_type __pos = 0, 654 typename basic_string<_CharT,_Traits,_Allocator>::size_type __n = 655 (basic_string<_CharT,_Traits,_Allocator>::npos), 656 _CharT __zero = _CharT('0'), _CharT __one = _CharT('1')); 657 658 // 23.3.5.2 bitset operations: 659 bitset& operator&=(const bitset& __rhs) _NOEXCEPT; 660 bitset& operator|=(const bitset& __rhs) _NOEXCEPT; 661 bitset& operator^=(const bitset& __rhs) _NOEXCEPT; 662 bitset& operator<<=(size_t __pos) _NOEXCEPT; 663 bitset& operator>>=(size_t __pos) _NOEXCEPT; 664 bitset& set() _NOEXCEPT; 665 bitset& set(size_t __pos, bool __val = true); 666 bitset& reset() _NOEXCEPT; 667 bitset& reset(size_t __pos); 668 bitset operator~() const _NOEXCEPT; 669 bitset& flip() _NOEXCEPT; 670 bitset& flip(size_t __pos); 671 672 // element access: 673 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 674 const_reference operator[](size_t __p) const {return base::__make_ref(__p);} 675 _LIBCPP_INLINE_VISIBILITY reference operator[](size_t __p) {return base::__make_ref(__p);} 676 unsigned long to_ulong() const; 677 unsigned long long to_ullong() const; 678 template <class _CharT, class _Traits, class _Allocator> 679 basic_string<_CharT, _Traits, _Allocator> to_string(_CharT __zero = _CharT('0'), 680 _CharT __one = _CharT('1')) const; 681 template <class _CharT, class _Traits> 682 basic_string<_CharT, _Traits, allocator<_CharT> > to_string(_CharT __zero = _CharT('0'), 683 _CharT __one = _CharT('1')) const; 684 template <class _CharT> 685 basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> > to_string(_CharT __zero = _CharT('0'), 686 _CharT __one = _CharT('1')) const; 687 basic_string<char, char_traits<char>, allocator<char> > to_string(char __zero = '0', 688 char __one = '1') const; 689 size_t count() const _NOEXCEPT; 690 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR size_t size() const _NOEXCEPT {return _Size;} 691 bool operator==(const bitset& __rhs) const _NOEXCEPT; 692 bool operator!=(const bitset& __rhs) const _NOEXCEPT; 693 bool test(size_t __pos) const; 694 bool all() const _NOEXCEPT; 695 bool any() const _NOEXCEPT; 696 _LIBCPP_INLINE_VISIBILITY bool none() const _NOEXCEPT {return !any();} 697 bitset operator<<(size_t __pos) const _NOEXCEPT; 698 bitset operator>>(size_t __pos) const _NOEXCEPT; 699 700 private: 701 702 _LIBCPP_INLINE_VISIBILITY 703 size_t __hash_code() const _NOEXCEPT {return base::__hash_code();} 704 705 friend struct hash<bitset>; 706 }; 707 708 template <size_t _Size> 709 template<class _CharT> 710 bitset<_Size>::bitset(const _CharT* __str, 711 typename basic_string<_CharT>::size_type __n, 712 _CharT __zero, _CharT __one) 713 { 714 size_t __rlen = _VSTD::min(__n, char_traits<_CharT>::length(__str)); 715 for (size_t __i = 0; __i < __rlen; ++__i) 716 if (__str[__i] != __zero && __str[__i] != __one) 717 #ifndef _LIBCPP_NO_EXCEPTIONS 718 throw invalid_argument("bitset string ctor has invalid argument"); 719 #else 720 assert(!"bitset string ctor has invalid argument"); 721 #endif 722 size_t _Mp = _VSTD::min(__rlen, _Size); 723 size_t __i = 0; 724 for (; __i < _Mp; ++__i) 725 { 726 _CharT __c = __str[_Mp - 1 - __i]; 727 if (__c == __zero) 728 (*this)[__i] = false; 729 else 730 (*this)[__i] = true; 731 } 732 _VSTD::fill(base::__make_iter(__i), base::__make_iter(_Size), false); 733 } 734 735 template <size_t _Size> 736 template<class _CharT, class _Traits, class _Allocator> 737 bitset<_Size>::bitset(const basic_string<_CharT,_Traits,_Allocator>& __str, 738 typename basic_string<_CharT,_Traits,_Allocator>::size_type __pos, 739 typename basic_string<_CharT,_Traits,_Allocator>::size_type __n, 740 _CharT __zero, _CharT __one) 741 { 742 if (__pos > __str.size()) 743 #ifndef _LIBCPP_NO_EXCEPTIONS 744 throw out_of_range("bitset string pos out of range"); 745 #else 746 assert(!"bitset string pos out of range"); 747 #endif 748 size_t __rlen = _VSTD::min(__n, __str.size() - __pos); 749 for (size_t __i = __pos; __i < __pos + __rlen; ++__i) 750 if (!_Traits::eq(__str[__i], __zero) && !_Traits::eq(__str[__i], __one)) 751 #ifndef _LIBCPP_NO_EXCEPTIONS 752 throw invalid_argument("bitset string ctor has invalid argument"); 753 #else 754 assert(!"bitset string ctor has invalid argument"); 755 #endif 756 size_t _Mp = _VSTD::min(__rlen, _Size); 757 size_t __i = 0; 758 for (; __i < _Mp; ++__i) 759 { 760 _CharT __c = __str[__pos + _Mp - 1 - __i]; 761 if (_Traits::eq(__c, __zero)) 762 (*this)[__i] = false; 763 else 764 (*this)[__i] = true; 765 } 766 _VSTD::fill(base::__make_iter(__i), base::__make_iter(_Size), false); 767 } 768 769 template <size_t _Size> 770 inline _LIBCPP_INLINE_VISIBILITY 771 bitset<_Size>& 772 bitset<_Size>::operator&=(const bitset& __rhs) _NOEXCEPT 773 { 774 base::operator&=(__rhs); 775 return *this; 776 } 777 778 template <size_t _Size> 779 inline _LIBCPP_INLINE_VISIBILITY 780 bitset<_Size>& 781 bitset<_Size>::operator|=(const bitset& __rhs) _NOEXCEPT 782 { 783 base::operator|=(__rhs); 784 return *this; 785 } 786 787 template <size_t _Size> 788 inline _LIBCPP_INLINE_VISIBILITY 789 bitset<_Size>& 790 bitset<_Size>::operator^=(const bitset& __rhs) _NOEXCEPT 791 { 792 base::operator^=(__rhs); 793 return *this; 794 } 795 796 template <size_t _Size> 797 bitset<_Size>& 798 bitset<_Size>::operator<<=(size_t __pos) _NOEXCEPT 799 { 800 __pos = _VSTD::min(__pos, _Size); 801 _VSTD::copy_backward(base::__make_iter(0), base::__make_iter(_Size - __pos), base::__make_iter(_Size)); 802 _VSTD::fill_n(base::__make_iter(0), __pos, false); 803 return *this; 804 } 805 806 template <size_t _Size> 807 bitset<_Size>& 808 bitset<_Size>::operator>>=(size_t __pos) _NOEXCEPT 809 { 810 __pos = _VSTD::min(__pos, _Size); 811 _VSTD::copy(base::__make_iter(__pos), base::__make_iter(_Size), base::__make_iter(0)); 812 _VSTD::fill_n(base::__make_iter(_Size - __pos), __pos, false); 813 return *this; 814 } 815 816 template <size_t _Size> 817 inline _LIBCPP_INLINE_VISIBILITY 818 bitset<_Size>& 819 bitset<_Size>::set() _NOEXCEPT 820 { 821 _VSTD::fill_n(base::__make_iter(0), _Size, true); 822 return *this; 823 } 824 825 template <size_t _Size> 826 bitset<_Size>& 827 bitset<_Size>::set(size_t __pos, bool __val) 828 { 829 if (__pos >= _Size) 830 #ifndef _LIBCPP_NO_EXCEPTIONS 831 throw out_of_range("bitset set argument out of range"); 832 #else 833 assert(!"bitset set argument out of range"); 834 #endif 835 (*this)[__pos] = __val; 836 return *this; 837 } 838 839 template <size_t _Size> 840 inline _LIBCPP_INLINE_VISIBILITY 841 bitset<_Size>& 842 bitset<_Size>::reset() _NOEXCEPT 843 { 844 _VSTD::fill_n(base::__make_iter(0), _Size, false); 845 return *this; 846 } 847 848 template <size_t _Size> 849 bitset<_Size>& 850 bitset<_Size>::reset(size_t __pos) 851 { 852 if (__pos >= _Size) 853 #ifndef _LIBCPP_NO_EXCEPTIONS 854 throw out_of_range("bitset reset argument out of range"); 855 #else 856 assert(!"bitset reset argument out of range"); 857 #endif 858 (*this)[__pos] = false; 859 return *this; 860 } 861 862 template <size_t _Size> 863 inline _LIBCPP_INLINE_VISIBILITY 864 bitset<_Size> 865 bitset<_Size>::operator~() const _NOEXCEPT 866 { 867 bitset __x(*this); 868 __x.flip(); 869 return __x; 870 } 871 872 template <size_t _Size> 873 inline _LIBCPP_INLINE_VISIBILITY 874 bitset<_Size>& 875 bitset<_Size>::flip() _NOEXCEPT 876 { 877 base::flip(); 878 return *this; 879 } 880 881 template <size_t _Size> 882 bitset<_Size>& 883 bitset<_Size>::flip(size_t __pos) 884 { 885 if (__pos >= _Size) 886 #ifndef _LIBCPP_NO_EXCEPTIONS 887 throw out_of_range("bitset flip argument out of range"); 888 #else 889 assert(!"bitset flip argument out of range"); 890 #endif 891 reference r = base::__make_ref(__pos); 892 r = ~r; 893 return *this; 894 } 895 896 template <size_t _Size> 897 inline _LIBCPP_INLINE_VISIBILITY 898 unsigned long 899 bitset<_Size>::to_ulong() const 900 { 901 return base::to_ulong(); 902 } 903 904 template <size_t _Size> 905 inline _LIBCPP_INLINE_VISIBILITY 906 unsigned long long 907 bitset<_Size>::to_ullong() const 908 { 909 return base::to_ullong(); 910 } 911 912 template <size_t _Size> 913 template <class _CharT, class _Traits, class _Allocator> 914 basic_string<_CharT, _Traits, _Allocator> 915 bitset<_Size>::to_string(_CharT __zero, _CharT __one) const 916 { 917 basic_string<_CharT, _Traits, _Allocator> __r(_Size, __zero); 918 for (size_t __i = 0; __i < _Size; ++__i) 919 { 920 if ((*this)[__i]) 921 __r[_Size - 1 - __i] = __one; 922 } 923 return __r; 924 } 925 926 template <size_t _Size> 927 template <class _CharT, class _Traits> 928 inline _LIBCPP_INLINE_VISIBILITY 929 basic_string<_CharT, _Traits, allocator<_CharT> > 930 bitset<_Size>::to_string(_CharT __zero, _CharT __one) const 931 { 932 return to_string<_CharT, _Traits, allocator<_CharT> >(__zero, __one); 933 } 934 935 template <size_t _Size> 936 template <class _CharT> 937 inline _LIBCPP_INLINE_VISIBILITY 938 basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> > 939 bitset<_Size>::to_string(_CharT __zero, _CharT __one) const 940 { 941 return to_string<_CharT, char_traits<_CharT>, allocator<_CharT> >(__zero, __one); 942 } 943 944 template <size_t _Size> 945 inline _LIBCPP_INLINE_VISIBILITY 946 basic_string<char, char_traits<char>, allocator<char> > 947 bitset<_Size>::to_string(char __zero, char __one) const 948 { 949 return to_string<char, char_traits<char>, allocator<char> >(__zero, __one); 950 } 951 952 template <size_t _Size> 953 inline _LIBCPP_INLINE_VISIBILITY 954 size_t 955 bitset<_Size>::count() const _NOEXCEPT 956 { 957 return static_cast<size_t>(_VSTD::count(base::__make_iter(0), base::__make_iter(_Size), true)); 958 } 959 960 template <size_t _Size> 961 inline _LIBCPP_INLINE_VISIBILITY 962 bool 963 bitset<_Size>::operator==(const bitset& __rhs) const _NOEXCEPT 964 { 965 return _VSTD::equal(base::__make_iter(0), base::__make_iter(_Size), __rhs.__make_iter(0)); 966 } 967 968 template <size_t _Size> 969 inline _LIBCPP_INLINE_VISIBILITY 970 bool 971 bitset<_Size>::operator!=(const bitset& __rhs) const _NOEXCEPT 972 { 973 return !(*this == __rhs); 974 } 975 976 template <size_t _Size> 977 bool 978 bitset<_Size>::test(size_t __pos) const 979 { 980 if (__pos >= _Size) 981 #ifndef _LIBCPP_NO_EXCEPTIONS 982 throw out_of_range("bitset test argument out of range"); 983 #else 984 assert(!"bitset test argument out of range"); 985 #endif 986 return (*this)[__pos]; 987 } 988 989 template <size_t _Size> 990 inline _LIBCPP_INLINE_VISIBILITY 991 bool 992 bitset<_Size>::all() const _NOEXCEPT 993 { 994 return base::all(); 995 } 996 997 template <size_t _Size> 998 inline _LIBCPP_INLINE_VISIBILITY 999 bool 1000 bitset<_Size>::any() const _NOEXCEPT 1001 { 1002 return base::any(); 1003 } 1004 1005 template <size_t _Size> 1006 inline _LIBCPP_INLINE_VISIBILITY 1007 bitset<_Size> 1008 bitset<_Size>::operator<<(size_t __pos) const _NOEXCEPT 1009 { 1010 bitset __r = *this; 1011 __r <<= __pos; 1012 return __r; 1013 } 1014 1015 template <size_t _Size> 1016 inline _LIBCPP_INLINE_VISIBILITY 1017 bitset<_Size> 1018 bitset<_Size>::operator>>(size_t __pos) const _NOEXCEPT 1019 { 1020 bitset __r = *this; 1021 __r >>= __pos; 1022 return __r; 1023 } 1024 1025 template <size_t _Size> 1026 inline _LIBCPP_INLINE_VISIBILITY 1027 bitset<_Size> 1028 operator&(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT 1029 { 1030 bitset<_Size> __r = __x; 1031 __r &= __y; 1032 return __r; 1033 } 1034 1035 template <size_t _Size> 1036 inline _LIBCPP_INLINE_VISIBILITY 1037 bitset<_Size> 1038 operator|(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT 1039 { 1040 bitset<_Size> __r = __x; 1041 __r |= __y; 1042 return __r; 1043 } 1044 1045 template <size_t _Size> 1046 inline _LIBCPP_INLINE_VISIBILITY 1047 bitset<_Size> 1048 operator^(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT 1049 { 1050 bitset<_Size> __r = __x; 1051 __r ^= __y; 1052 return __r; 1053 } 1054 1055 template <size_t _Size> 1056 struct _LIBCPP_VISIBLE hash<bitset<_Size> > 1057 : public unary_function<bitset<_Size>, size_t> 1058 { 1059 _LIBCPP_INLINE_VISIBILITY 1060 size_t operator()(const bitset<_Size>& __bs) const _NOEXCEPT 1061 {return __bs.__hash_code();} 1062 }; 1063 1064 template <class _CharT, class _Traits, size_t _Size> 1065 basic_istream<_CharT, _Traits>& 1066 operator>>(basic_istream<_CharT, _Traits>& __is, bitset<_Size>& __x); 1067 1068 template <class _CharT, class _Traits, size_t _Size> 1069 basic_ostream<_CharT, _Traits>& 1070 operator<<(basic_ostream<_CharT, _Traits>& __os, const bitset<_Size>& __x); 1071 1072 _LIBCPP_END_NAMESPACE_STD 1073 1074 #endif // _LIBCPP_BITSET 1075
