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 #if __SIZEOF_SIZE_T__ == 8 253 : __first_{__v} 254 #elif __SIZEOF_SIZE_T__ == 4 255 : __first_{__v, __v >> __bits_per_word} 256 #else 257 #error This constructor has not been ported to this platform 258 #endif 259 #endif 260 { 261 #ifdef _LIBCPP_HAS_NO_CONSTEXPR 262 __init(__v, integral_constant<bool, sizeof(unsigned long long) == sizeof(__storage_type)>()); 263 #endif 264 } 265 266 template <size_t _N_words, size_t _Size> 267 inline _LIBCPP_INLINE_VISIBILITY 268 void 269 __bitset<_N_words, _Size>::operator&=(const __bitset& __v) _NOEXCEPT 270 { 271 for (size_type __i = 0; __i < _N_words; ++__i) 272 __first_[__i] &= __v.__first_[__i]; 273 } 274 275 template <size_t _N_words, size_t _Size> 276 inline _LIBCPP_INLINE_VISIBILITY 277 void 278 __bitset<_N_words, _Size>::operator|=(const __bitset& __v) _NOEXCEPT 279 { 280 for (size_type __i = 0; __i < _N_words; ++__i) 281 __first_[__i] |= __v.__first_[__i]; 282 } 283 284 template <size_t _N_words, size_t _Size> 285 inline _LIBCPP_INLINE_VISIBILITY 286 void 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 } 292 293 template <size_t _N_words, size_t _Size> 294 void 295 __bitset<_N_words, _Size>::flip() _NOEXCEPT 296 { 297 // do middle whole words 298 size_type __n = _Size; 299 __storage_pointer __p = __first_; 300 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 301 *__p = ~*__p; 302 // do last partial word 303 if (__n > 0) 304 { 305 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 306 __storage_type __b = *__p & __m; 307 *__p &= ~__m; 308 *__p |= ~__b & __m; 309 } 310 } 311 312 template <size_t _N_words, size_t _Size> 313 unsigned long 314 __bitset<_N_words, _Size>::to_ulong(false_type) const 315 { 316 const_iterator __e = __make_iter(_Size); 317 const_iterator __i = _VSTD::find(__make_iter(sizeof(unsigned long) * CHAR_BIT), __e, true); 318 if (__i != __e) 319 #ifndef _LIBCPP_NO_EXCEPTIONS 320 throw overflow_error("bitset to_ulong overflow error"); 321 #else 322 assert(!"bitset to_ulong overflow error"); 323 #endif 324 return __first_[0]; 325 } 326 327 template <size_t _N_words, size_t _Size> 328 inline _LIBCPP_INLINE_VISIBILITY 329 unsigned long 330 __bitset<_N_words, _Size>::to_ulong(true_type) const 331 { 332 return __first_[0]; 333 } 334 335 template <size_t _N_words, size_t _Size> 336 unsigned long long 337 __bitset<_N_words, _Size>::to_ullong(false_type) const 338 { 339 const_iterator __e = __make_iter(_Size); 340 const_iterator __i = _VSTD::find(__make_iter(sizeof(unsigned long long) * CHAR_BIT), __e, true); 341 if (__i != __e) 342 #ifndef _LIBCPP_NO_EXCEPTIONS 343 throw overflow_error("bitset to_ullong overflow error"); 344 #else 345 assert(!"bitset to_ullong overflow error"); 346 #endif 347 return to_ullong(true_type()); 348 } 349 350 template <size_t _N_words, size_t _Size> 351 inline _LIBCPP_INLINE_VISIBILITY 352 unsigned long long 353 __bitset<_N_words, _Size>::to_ullong(true_type) const 354 { 355 return to_ullong(true_type(), integral_constant<bool, sizeof(__storage_type) < sizeof(unsigned long long)>()); 356 } 357 358 template <size_t _N_words, size_t _Size> 359 inline _LIBCPP_INLINE_VISIBILITY 360 unsigned long long 361 __bitset<_N_words, _Size>::to_ullong(true_type, false_type) const 362 { 363 return __first_[0]; 364 } 365 366 template <size_t _N_words, size_t _Size> 367 unsigned long long 368 __bitset<_N_words, _Size>::to_ullong(true_type, true_type) const 369 { 370 unsigned long long __r = __first_[0]; 371 for (std::size_t __i = 1; __i < sizeof(unsigned long long) / sizeof(__storage_type); ++__i) 372 __r |= static_cast<unsigned long long>(__first_[__i]) << (sizeof(__storage_type) * CHAR_BIT); 373 return __r; 374 } 375 376 template <size_t _N_words, size_t _Size> 377 bool 378 __bitset<_N_words, _Size>::all() const _NOEXCEPT 379 { 380 // do middle whole words 381 size_type __n = _Size; 382 __const_storage_pointer __p = __first_; 383 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 384 if (~*__p) 385 return false; 386 // do last partial word 387 if (__n > 0) 388 { 389 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 390 if (~*__p & __m) 391 return false; 392 } 393 return true; 394 } 395 396 template <size_t _N_words, size_t _Size> 397 bool 398 __bitset<_N_words, _Size>::any() const _NOEXCEPT 399 { 400 // do middle whole words 401 size_type __n = _Size; 402 __const_storage_pointer __p = __first_; 403 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 404 if (*__p) 405 return true; 406 // do last partial word 407 if (__n > 0) 408 { 409 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 410 if (*__p & __m) 411 return true; 412 } 413 return false; 414 } 415 416 template <size_t _N_words, size_t _Size> 417 inline _LIBCPP_INLINE_VISIBILITY 418 size_t 419 __bitset<_N_words, _Size>::__hash_code() const _NOEXCEPT 420 { 421 size_t __h = 0; 422 for (size_type __i = 0; __i < _N_words; ++__i) 423 __h ^= __first_[__i]; 424 return __h; 425 } 426 427 template <size_t _Size> 428 class __bitset<1, _Size> 429 { 430 public: 431 typedef ptrdiff_t difference_type; 432 typedef size_t size_type; 433 typedef size_type __storage_type; 434 protected: 435 typedef __bitset __self; 436 typedef __storage_type* __storage_pointer; 437 typedef const __storage_type* __const_storage_pointer; 438 static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT); 439 440 friend class __bit_reference<__bitset>; 441 friend class __bit_const_reference<__bitset>; 442 friend class __bit_iterator<__bitset, false>; 443 friend class __bit_iterator<__bitset, true>; 444 friend struct __bit_array<__bitset>; 445 446 __storage_type __first_; 447 448 typedef __bit_reference<__bitset> reference; 449 typedef __bit_const_reference<__bitset> const_reference; 450 typedef __bit_iterator<__bitset, false> iterator; 451 typedef __bit_iterator<__bitset, true> const_iterator; 452 453 _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT; 454 explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT; 455 456 _LIBCPP_INLINE_VISIBILITY reference __make_ref(size_t __pos) _NOEXCEPT 457 {return reference(&__first_, __storage_type(1) << __pos);} 458 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR const_reference __make_ref(size_t __pos) const _NOEXCEPT 459 {return const_reference(&__first_, __storage_type(1) << __pos);} 460 _LIBCPP_INLINE_VISIBILITY iterator __make_iter(size_t __pos) _NOEXCEPT 461 {return iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);} 462 _LIBCPP_INLINE_VISIBILITY const_iterator __make_iter(size_t __pos) const _NOEXCEPT 463 {return const_iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);} 464 465 void operator&=(const __bitset& __v) _NOEXCEPT; 466 void operator|=(const __bitset& __v) _NOEXCEPT; 467 void operator^=(const __bitset& __v) _NOEXCEPT; 468 469 void flip() _NOEXCEPT; 470 471 unsigned long to_ulong() const; 472 unsigned long long to_ullong() const; 473 474 bool all() const _NOEXCEPT; 475 bool any() const _NOEXCEPT; 476 477 size_t __hash_code() const _NOEXCEPT; 478 }; 479 480 template <size_t _Size> 481 inline _LIBCPP_INLINE_VISIBILITY 482 _LIBCPP_CONSTEXPR 483 __bitset<1, _Size>::__bitset() _NOEXCEPT 484 : __first_(0) 485 { 486 } 487 488 template <size_t _Size> 489 inline _LIBCPP_INLINE_VISIBILITY 490 _LIBCPP_CONSTEXPR 491 __bitset<1, _Size>::__bitset(unsigned long long __v) _NOEXCEPT 492 : __first_(static_cast<__storage_type>(__v)) 493 { 494 } 495 496 template <size_t _Size> 497 inline _LIBCPP_INLINE_VISIBILITY 498 void 499 __bitset<1, _Size>::operator&=(const __bitset& __v) _NOEXCEPT 500 { 501 __first_ &= __v.__first_; 502 } 503 504 template <size_t _Size> 505 inline _LIBCPP_INLINE_VISIBILITY 506 void 507 __bitset<1, _Size>::operator|=(const __bitset& __v) _NOEXCEPT 508 { 509 __first_ |= __v.__first_; 510 } 511 512 template <size_t _Size> 513 inline _LIBCPP_INLINE_VISIBILITY 514 void 515 __bitset<1, _Size>::operator^=(const __bitset& __v) _NOEXCEPT 516 { 517 __first_ ^= __v.__first_; 518 } 519 520 template <size_t _Size> 521 inline _LIBCPP_INLINE_VISIBILITY 522 void 523 __bitset<1, _Size>::flip() _NOEXCEPT 524 { 525 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 526 __first_ = ~__first_; 527 __first_ &= __m; 528 } 529 530 template <size_t _Size> 531 inline _LIBCPP_INLINE_VISIBILITY 532 unsigned long 533 __bitset<1, _Size>::to_ulong() const 534 { 535 return __first_; 536 } 537 538 template <size_t _Size> 539 inline _LIBCPP_INLINE_VISIBILITY 540 unsigned long long 541 __bitset<1, _Size>::to_ullong() const 542 { 543 return __first_; 544 } 545 546 template <size_t _Size> 547 inline _LIBCPP_INLINE_VISIBILITY 548 bool 549 __bitset<1, _Size>::all() const _NOEXCEPT 550 { 551 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 552 return !(~__first_ & __m); 553 } 554 555 template <size_t _Size> 556 inline _LIBCPP_INLINE_VISIBILITY 557 bool 558 __bitset<1, _Size>::any() const _NOEXCEPT 559 { 560 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 561 return __first_ & __m; 562 } 563 564 template <size_t _Size> 565 inline _LIBCPP_INLINE_VISIBILITY 566 size_t 567 __bitset<1, _Size>::__hash_code() const _NOEXCEPT 568 { 569 return __first_; 570 } 571 572 template <> 573 class __bitset<0, 0> 574 { 575 public: 576 typedef ptrdiff_t difference_type; 577 typedef size_t size_type; 578 typedef size_type __storage_type; 579 protected: 580 typedef __bitset __self; 581 typedef __storage_type* __storage_pointer; 582 typedef const __storage_type* __const_storage_pointer; 583 static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT); 584 585 friend class __bit_reference<__bitset>; 586 friend class __bit_const_reference<__bitset>; 587 friend class __bit_iterator<__bitset, false>; 588 friend class __bit_iterator<__bitset, true>; 589 friend struct __bit_array<__bitset>; 590 591 typedef __bit_reference<__bitset> reference; 592 typedef __bit_const_reference<__bitset> const_reference; 593 typedef __bit_iterator<__bitset, false> iterator; 594 typedef __bit_iterator<__bitset, true> const_iterator; 595 596 _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT; 597 explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long) _NOEXCEPT; 598 599 _LIBCPP_INLINE_VISIBILITY reference __make_ref(size_t) _NOEXCEPT 600 {return reference(0, 1);} 601 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR const_reference __make_ref(size_t) const _NOEXCEPT 602 {return const_reference(0, 1);} 603 _LIBCPP_INLINE_VISIBILITY iterator __make_iter(size_t) _NOEXCEPT 604 {return iterator(0, 0);} 605 _LIBCPP_INLINE_VISIBILITY const_iterator __make_iter(size_t) const _NOEXCEPT 606 {return const_iterator(0, 0);} 607 608 _LIBCPP_INLINE_VISIBILITY void operator&=(const __bitset&) _NOEXCEPT {} 609 _LIBCPP_INLINE_VISIBILITY void operator|=(const __bitset&) _NOEXCEPT {} 610 _LIBCPP_INLINE_VISIBILITY void operator^=(const __bitset&) _NOEXCEPT {} 611 612 _LIBCPP_INLINE_VISIBILITY void flip() _NOEXCEPT {} 613 614 _LIBCPP_INLINE_VISIBILITY unsigned long to_ulong() const {return 0;} 615 _LIBCPP_INLINE_VISIBILITY unsigned long long to_ullong() const {return 0;} 616 617 _LIBCPP_INLINE_VISIBILITY bool all() const _NOEXCEPT {return true;} 618 _LIBCPP_INLINE_VISIBILITY bool any() const _NOEXCEPT {return false;} 619 620 _LIBCPP_INLINE_VISIBILITY size_t __hash_code() const _NOEXCEPT {return 0;} 621 }; 622 623 inline _LIBCPP_INLINE_VISIBILITY 624 _LIBCPP_CONSTEXPR 625 __bitset<0, 0>::__bitset() _NOEXCEPT 626 { 627 } 628 629 inline _LIBCPP_INLINE_VISIBILITY 630 _LIBCPP_CONSTEXPR 631 __bitset<0, 0>::__bitset(unsigned long long) _NOEXCEPT 632 { 633 } 634 635 template <size_t _Size> class _LIBCPP_TYPE_VIS_ONLY bitset; 636 template <size_t _Size> struct _LIBCPP_TYPE_VIS_ONLY hash<bitset<_Size> >; 637 638 template <size_t _Size> 639 class _LIBCPP_TYPE_VIS_ONLY bitset 640 : private __bitset<_Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1, _Size> 641 { 642 public: 643 static const unsigned __n_words = _Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1; 644 typedef __bitset<__n_words, _Size> base; 645 646 public: 647 typedef typename base::reference reference; 648 typedef typename base::const_reference const_reference; 649 650 // 23.3.5.1 constructors: 651 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR bitset() _NOEXCEPT {} 652 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 653 bitset(unsigned long long __v) _NOEXCEPT : base(__v) {} 654 template<class _CharT> 655 explicit bitset(const _CharT* __str, 656 typename basic_string<_CharT>::size_type __n = basic_string<_CharT>::npos, 657 _CharT __zero = _CharT('0'), _CharT __one = _CharT('1')); 658 template<class _CharT, class _Traits, class _Allocator> 659 explicit bitset(const basic_string<_CharT,_Traits,_Allocator>& __str, 660 typename basic_string<_CharT,_Traits,_Allocator>::size_type __pos = 0, 661 typename basic_string<_CharT,_Traits,_Allocator>::size_type __n = 662 (basic_string<_CharT,_Traits,_Allocator>::npos), 663 _CharT __zero = _CharT('0'), _CharT __one = _CharT('1')); 664 665 // 23.3.5.2 bitset operations: 666 bitset& operator&=(const bitset& __rhs) _NOEXCEPT; 667 bitset& operator|=(const bitset& __rhs) _NOEXCEPT; 668 bitset& operator^=(const bitset& __rhs) _NOEXCEPT; 669 bitset& operator<<=(size_t __pos) _NOEXCEPT; 670 bitset& operator>>=(size_t __pos) _NOEXCEPT; 671 bitset& set() _NOEXCEPT; 672 bitset& set(size_t __pos, bool __val = true); 673 bitset& reset() _NOEXCEPT; 674 bitset& reset(size_t __pos); 675 bitset operator~() const _NOEXCEPT; 676 bitset& flip() _NOEXCEPT; 677 bitset& flip(size_t __pos); 678 679 // element access: 680 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 681 const_reference operator[](size_t __p) const {return base::__make_ref(__p);} 682 _LIBCPP_INLINE_VISIBILITY reference operator[](size_t __p) {return base::__make_ref(__p);} 683 unsigned long to_ulong() const; 684 unsigned long long to_ullong() const; 685 template <class _CharT, class _Traits, class _Allocator> 686 basic_string<_CharT, _Traits, _Allocator> to_string(_CharT __zero = _CharT('0'), 687 _CharT __one = _CharT('1')) const; 688 template <class _CharT, class _Traits> 689 basic_string<_CharT, _Traits, allocator<_CharT> > to_string(_CharT __zero = _CharT('0'), 690 _CharT __one = _CharT('1')) const; 691 template <class _CharT> 692 basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> > to_string(_CharT __zero = _CharT('0'), 693 _CharT __one = _CharT('1')) const; 694 basic_string<char, char_traits<char>, allocator<char> > to_string(char __zero = '0', 695 char __one = '1') const; 696 size_t count() const _NOEXCEPT; 697 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR size_t size() const _NOEXCEPT {return _Size;} 698 bool operator==(const bitset& __rhs) const _NOEXCEPT; 699 bool operator!=(const bitset& __rhs) const _NOEXCEPT; 700 bool test(size_t __pos) const; 701 bool all() const _NOEXCEPT; 702 bool any() const _NOEXCEPT; 703 _LIBCPP_INLINE_VISIBILITY bool none() const _NOEXCEPT {return !any();} 704 bitset operator<<(size_t __pos) const _NOEXCEPT; 705 bitset operator>>(size_t __pos) const _NOEXCEPT; 706 707 private: 708 709 _LIBCPP_INLINE_VISIBILITY 710 size_t __hash_code() const _NOEXCEPT {return base::__hash_code();} 711 712 friend struct hash<bitset>; 713 }; 714 715 template <size_t _Size> 716 template<class _CharT> 717 bitset<_Size>::bitset(const _CharT* __str, 718 typename basic_string<_CharT>::size_type __n, 719 _CharT __zero, _CharT __one) 720 { 721 size_t __rlen = _VSTD::min(__n, char_traits<_CharT>::length(__str)); 722 for (size_t __i = 0; __i < __rlen; ++__i) 723 if (__str[__i] != __zero && __str[__i] != __one) 724 #ifndef _LIBCPP_NO_EXCEPTIONS 725 throw invalid_argument("bitset string ctor has invalid argument"); 726 #else 727 assert(!"bitset string ctor has invalid argument"); 728 #endif 729 size_t _Mp = _VSTD::min(__rlen, _Size); 730 size_t __i = 0; 731 for (; __i < _Mp; ++__i) 732 { 733 _CharT __c = __str[_Mp - 1 - __i]; 734 if (__c == __zero) 735 (*this)[__i] = false; 736 else 737 (*this)[__i] = true; 738 } 739 _VSTD::fill(base::__make_iter(__i), base::__make_iter(_Size), false); 740 } 741 742 template <size_t _Size> 743 template<class _CharT, class _Traits, class _Allocator> 744 bitset<_Size>::bitset(const basic_string<_CharT,_Traits,_Allocator>& __str, 745 typename basic_string<_CharT,_Traits,_Allocator>::size_type __pos, 746 typename basic_string<_CharT,_Traits,_Allocator>::size_type __n, 747 _CharT __zero, _CharT __one) 748 { 749 if (__pos > __str.size()) 750 #ifndef _LIBCPP_NO_EXCEPTIONS 751 throw out_of_range("bitset string pos out of range"); 752 #else 753 assert(!"bitset string pos out of range"); 754 #endif 755 size_t __rlen = _VSTD::min(__n, __str.size() - __pos); 756 for (size_t __i = __pos; __i < __pos + __rlen; ++__i) 757 if (!_Traits::eq(__str[__i], __zero) && !_Traits::eq(__str[__i], __one)) 758 #ifndef _LIBCPP_NO_EXCEPTIONS 759 throw invalid_argument("bitset string ctor has invalid argument"); 760 #else 761 assert(!"bitset string ctor has invalid argument"); 762 #endif 763 size_t _Mp = _VSTD::min(__rlen, _Size); 764 size_t __i = 0; 765 for (; __i < _Mp; ++__i) 766 { 767 _CharT __c = __str[__pos + _Mp - 1 - __i]; 768 if (_Traits::eq(__c, __zero)) 769 (*this)[__i] = false; 770 else 771 (*this)[__i] = true; 772 } 773 _VSTD::fill(base::__make_iter(__i), base::__make_iter(_Size), false); 774 } 775 776 template <size_t _Size> 777 inline _LIBCPP_INLINE_VISIBILITY 778 bitset<_Size>& 779 bitset<_Size>::operator&=(const bitset& __rhs) _NOEXCEPT 780 { 781 base::operator&=(__rhs); 782 return *this; 783 } 784 785 template <size_t _Size> 786 inline _LIBCPP_INLINE_VISIBILITY 787 bitset<_Size>& 788 bitset<_Size>::operator|=(const bitset& __rhs) _NOEXCEPT 789 { 790 base::operator|=(__rhs); 791 return *this; 792 } 793 794 template <size_t _Size> 795 inline _LIBCPP_INLINE_VISIBILITY 796 bitset<_Size>& 797 bitset<_Size>::operator^=(const bitset& __rhs) _NOEXCEPT 798 { 799 base::operator^=(__rhs); 800 return *this; 801 } 802 803 template <size_t _Size> 804 bitset<_Size>& 805 bitset<_Size>::operator<<=(size_t __pos) _NOEXCEPT 806 { 807 __pos = _VSTD::min(__pos, _Size); 808 _VSTD::copy_backward(base::__make_iter(0), base::__make_iter(_Size - __pos), base::__make_iter(_Size)); 809 _VSTD::fill_n(base::__make_iter(0), __pos, false); 810 return *this; 811 } 812 813 template <size_t _Size> 814 bitset<_Size>& 815 bitset<_Size>::operator>>=(size_t __pos) _NOEXCEPT 816 { 817 __pos = _VSTD::min(__pos, _Size); 818 _VSTD::copy(base::__make_iter(__pos), base::__make_iter(_Size), base::__make_iter(0)); 819 _VSTD::fill_n(base::__make_iter(_Size - __pos), __pos, false); 820 return *this; 821 } 822 823 template <size_t _Size> 824 inline _LIBCPP_INLINE_VISIBILITY 825 bitset<_Size>& 826 bitset<_Size>::set() _NOEXCEPT 827 { 828 _VSTD::fill_n(base::__make_iter(0), _Size, true); 829 return *this; 830 } 831 832 template <size_t _Size> 833 bitset<_Size>& 834 bitset<_Size>::set(size_t __pos, bool __val) 835 { 836 if (__pos >= _Size) 837 #ifndef _LIBCPP_NO_EXCEPTIONS 838 throw out_of_range("bitset set argument out of range"); 839 #else 840 assert(!"bitset set argument out of range"); 841 #endif 842 (*this)[__pos] = __val; 843 return *this; 844 } 845 846 template <size_t _Size> 847 inline _LIBCPP_INLINE_VISIBILITY 848 bitset<_Size>& 849 bitset<_Size>::reset() _NOEXCEPT 850 { 851 _VSTD::fill_n(base::__make_iter(0), _Size, false); 852 return *this; 853 } 854 855 template <size_t _Size> 856 bitset<_Size>& 857 bitset<_Size>::reset(size_t __pos) 858 { 859 if (__pos >= _Size) 860 #ifndef _LIBCPP_NO_EXCEPTIONS 861 throw out_of_range("bitset reset argument out of range"); 862 #else 863 assert(!"bitset reset argument out of range"); 864 #endif 865 (*this)[__pos] = false; 866 return *this; 867 } 868 869 template <size_t _Size> 870 inline _LIBCPP_INLINE_VISIBILITY 871 bitset<_Size> 872 bitset<_Size>::operator~() const _NOEXCEPT 873 { 874 bitset __x(*this); 875 __x.flip(); 876 return __x; 877 } 878 879 template <size_t _Size> 880 inline _LIBCPP_INLINE_VISIBILITY 881 bitset<_Size>& 882 bitset<_Size>::flip() _NOEXCEPT 883 { 884 base::flip(); 885 return *this; 886 } 887 888 template <size_t _Size> 889 bitset<_Size>& 890 bitset<_Size>::flip(size_t __pos) 891 { 892 if (__pos >= _Size) 893 #ifndef _LIBCPP_NO_EXCEPTIONS 894 throw out_of_range("bitset flip argument out of range"); 895 #else 896 assert(!"bitset flip argument out of range"); 897 #endif 898 reference r = base::__make_ref(__pos); 899 r = ~r; 900 return *this; 901 } 902 903 template <size_t _Size> 904 inline _LIBCPP_INLINE_VISIBILITY 905 unsigned long 906 bitset<_Size>::to_ulong() const 907 { 908 return base::to_ulong(); 909 } 910 911 template <size_t _Size> 912 inline _LIBCPP_INLINE_VISIBILITY 913 unsigned long long 914 bitset<_Size>::to_ullong() const 915 { 916 return base::to_ullong(); 917 } 918 919 template <size_t _Size> 920 template <class _CharT, class _Traits, class _Allocator> 921 basic_string<_CharT, _Traits, _Allocator> 922 bitset<_Size>::to_string(_CharT __zero, _CharT __one) const 923 { 924 basic_string<_CharT, _Traits, _Allocator> __r(_Size, __zero); 925 for (size_t __i = 0; __i < _Size; ++__i) 926 { 927 if ((*this)[__i]) 928 __r[_Size - 1 - __i] = __one; 929 } 930 return __r; 931 } 932 933 template <size_t _Size> 934 template <class _CharT, class _Traits> 935 inline _LIBCPP_INLINE_VISIBILITY 936 basic_string<_CharT, _Traits, allocator<_CharT> > 937 bitset<_Size>::to_string(_CharT __zero, _CharT __one) const 938 { 939 return to_string<_CharT, _Traits, allocator<_CharT> >(__zero, __one); 940 } 941 942 template <size_t _Size> 943 template <class _CharT> 944 inline _LIBCPP_INLINE_VISIBILITY 945 basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> > 946 bitset<_Size>::to_string(_CharT __zero, _CharT __one) const 947 { 948 return to_string<_CharT, char_traits<_CharT>, allocator<_CharT> >(__zero, __one); 949 } 950 951 template <size_t _Size> 952 inline _LIBCPP_INLINE_VISIBILITY 953 basic_string<char, char_traits<char>, allocator<char> > 954 bitset<_Size>::to_string(char __zero, char __one) const 955 { 956 return to_string<char, char_traits<char>, allocator<char> >(__zero, __one); 957 } 958 959 template <size_t _Size> 960 inline _LIBCPP_INLINE_VISIBILITY 961 size_t 962 bitset<_Size>::count() const _NOEXCEPT 963 { 964 return static_cast<size_t>(_VSTD::count(base::__make_iter(0), base::__make_iter(_Size), true)); 965 } 966 967 template <size_t _Size> 968 inline _LIBCPP_INLINE_VISIBILITY 969 bool 970 bitset<_Size>::operator==(const bitset& __rhs) const _NOEXCEPT 971 { 972 return _VSTD::equal(base::__make_iter(0), base::__make_iter(_Size), __rhs.__make_iter(0)); 973 } 974 975 template <size_t _Size> 976 inline _LIBCPP_INLINE_VISIBILITY 977 bool 978 bitset<_Size>::operator!=(const bitset& __rhs) const _NOEXCEPT 979 { 980 return !(*this == __rhs); 981 } 982 983 template <size_t _Size> 984 bool 985 bitset<_Size>::test(size_t __pos) const 986 { 987 if (__pos >= _Size) 988 #ifndef _LIBCPP_NO_EXCEPTIONS 989 throw out_of_range("bitset test argument out of range"); 990 #else 991 assert(!"bitset test argument out of range"); 992 #endif 993 return (*this)[__pos]; 994 } 995 996 template <size_t _Size> 997 inline _LIBCPP_INLINE_VISIBILITY 998 bool 999 bitset<_Size>::all() const _NOEXCEPT 1000 { 1001 return base::all(); 1002 } 1003 1004 template <size_t _Size> 1005 inline _LIBCPP_INLINE_VISIBILITY 1006 bool 1007 bitset<_Size>::any() const _NOEXCEPT 1008 { 1009 return base::any(); 1010 } 1011 1012 template <size_t _Size> 1013 inline _LIBCPP_INLINE_VISIBILITY 1014 bitset<_Size> 1015 bitset<_Size>::operator<<(size_t __pos) const _NOEXCEPT 1016 { 1017 bitset __r = *this; 1018 __r <<= __pos; 1019 return __r; 1020 } 1021 1022 template <size_t _Size> 1023 inline _LIBCPP_INLINE_VISIBILITY 1024 bitset<_Size> 1025 bitset<_Size>::operator>>(size_t __pos) const _NOEXCEPT 1026 { 1027 bitset __r = *this; 1028 __r >>= __pos; 1029 return __r; 1030 } 1031 1032 template <size_t _Size> 1033 inline _LIBCPP_INLINE_VISIBILITY 1034 bitset<_Size> 1035 operator&(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT 1036 { 1037 bitset<_Size> __r = __x; 1038 __r &= __y; 1039 return __r; 1040 } 1041 1042 template <size_t _Size> 1043 inline _LIBCPP_INLINE_VISIBILITY 1044 bitset<_Size> 1045 operator|(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT 1046 { 1047 bitset<_Size> __r = __x; 1048 __r |= __y; 1049 return __r; 1050 } 1051 1052 template <size_t _Size> 1053 inline _LIBCPP_INLINE_VISIBILITY 1054 bitset<_Size> 1055 operator^(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT 1056 { 1057 bitset<_Size> __r = __x; 1058 __r ^= __y; 1059 return __r; 1060 } 1061 1062 template <size_t _Size> 1063 struct _LIBCPP_TYPE_VIS_ONLY hash<bitset<_Size> > 1064 : public unary_function<bitset<_Size>, size_t> 1065 { 1066 _LIBCPP_INLINE_VISIBILITY 1067 size_t operator()(const bitset<_Size>& __bs) const _NOEXCEPT 1068 {return __bs.__hash_code();} 1069 }; 1070 1071 template <class _CharT, class _Traits, size_t _Size> 1072 basic_istream<_CharT, _Traits>& 1073 operator>>(basic_istream<_CharT, _Traits>& __is, bitset<_Size>& __x); 1074 1075 template <class _CharT, class _Traits, size_t _Size> 1076 basic_ostream<_CharT, _Traits>& 1077 operator<<(basic_ostream<_CharT, _Traits>& __os, const bitset<_Size>& __x); 1078 1079 _LIBCPP_END_NAMESPACE_STD 1080 1081 #endif // _LIBCPP_BITSET 1082
