xref: /freebsd/contrib/llvm-project/libcxx/include/bitset (revision b64c5a0ace59af62eff52bfe110a521dc73c937b) 
1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP_BITSET
11#define _LIBCPP_BITSET
12
13// clang-format off
14
15/*
16    bitset synopsis
17
18namespace std
19{
20
21namespace std {
22
23template <size_t N>
24class bitset
25{
26public:
27    // bit reference:
28    class reference
29    {
30        friend class bitset;
31        reference() noexcept;
32    public:
33        ~reference() noexcept;
34        reference& operator=(bool x) noexcept;           // for b[i] = x;
35        reference& operator=(const reference&) noexcept; // for b[i] = b[j];
36        bool operator~() const noexcept;                 // flips the bit
37        operator bool() const noexcept;                  // for x = b[i];
38        reference& flip() noexcept;                      // for b[i].flip();
39    };
40
41    // 23.3.5.1 constructors:
42    constexpr bitset() noexcept;
43    constexpr bitset(unsigned long long val) noexcept;
44    template <class charT>
45        constexpr explicit bitset(const charT* str,
46            typename basic_string<charT>::size_type n = basic_string<charT>::npos,
47            charT zero = charT('0'), charT one = charT('1'));                                // until C++26, constexpr since C++23
48    template <class charT>
49        constexpr explicit bitset(const charT* str,
50            typename basic_string_view<charT>::size_type n = basic_string_view<charT>::npos,
51            charT zero = charT('0'), charT one = charT('1'));                                // since C++26
52    template<class charT, class traits>
53        explicit bitset(
54            const basic_string_view<charT,traits>& str,
55            typename basic_string_view<charT,traits>::size_type pos = 0,
56            typename basic_string_view<charT,traits>::size_type n = basic_string_view<charT,traits>::npos,
57            charT zero = charT('0'), charT one = charT('1'));                                // since C++26
58    template<class charT, class traits, class Allocator>
59        constexpr explicit bitset(
60            const basic_string<charT,traits,Allocator>& str,
61            typename basic_string<charT,traits,Allocator>::size_type pos = 0,
62            typename basic_string<charT,traits,Allocator>::size_type n = basic_string<charT,traits,Allocator>::npos,
63            charT zero = charT('0'), charT one = charT('1'));                                // constexpr since C++23
64
65    // 23.3.5.2 bitset operations:
66    bitset& operator&=(const bitset& rhs) noexcept; // constexpr since C++23
67    bitset& operator|=(const bitset& rhs) noexcept; // constexpr since C++23
68    bitset& operator^=(const bitset& rhs) noexcept; // constexpr since C++23
69    bitset& operator<<=(size_t pos) noexcept;       // constexpr since C++23
70    bitset& operator>>=(size_t pos) noexcept;       // constexpr since C++23
71    bitset& set() noexcept;                         // constexpr since C++23
72    bitset& set(size_t pos, bool val = true);       // constexpr since C++23
73    bitset& reset() noexcept;                       // constexpr since C++23
74    bitset& reset(size_t pos);                      // constexpr since C++23
75    bitset operator~() const noexcept;              // constexpr since C++23
76    bitset& flip() noexcept;                        // constexpr since C++23
77    bitset& flip(size_t pos);                       // constexpr since C++23
78
79    // element access:
80    constexpr bool operator[](size_t pos) const;
81    reference operator[](size_t pos);            // constexpr since C++23
82    unsigned long to_ulong() const;              // constexpr since C++23
83    unsigned long long to_ullong() const;        // constexpr since C++23
84    template <class charT, class traits, class Allocator> // constexpr since C++23
85        basic_string<charT, traits, Allocator> to_string(charT zero = charT('0'), charT one = charT('1')) const;
86    template <class charT, class traits> // constexpr since C++23
87        basic_string<charT, traits, allocator<charT> > to_string(charT zero = charT('0'), charT one = charT('1')) const;
88    template <class charT> // constexpr since C++23
89        basic_string<charT, char_traits<charT>, allocator<charT> > to_string(charT zero = charT('0'), charT one = charT('1')) const;
90    basic_string<char, char_traits<char>, allocator<char> > to_string(char zero = '0', char one = '1') const; // constexpr since C++23
91    size_t count() const noexcept;                     // constexpr since C++23
92    constexpr size_t size() const noexcept;            // constexpr since C++23
93    bool operator==(const bitset& rhs) const noexcept; // constexpr since C++23
94    bool operator!=(const bitset& rhs) const noexcept; // removed in C++20
95    bool test(size_t pos) const;                       // constexpr since C++23
96    bool all() const noexcept;                         // constexpr since C++23
97    bool any() const noexcept;                         // constexpr since C++23
98    bool none() const noexcept;                        // constexpr since C++23
99    bitset<N> operator<<(size_t pos) const noexcept;   // constexpr since C++23
100    bitset<N> operator>>(size_t pos) const noexcept;   // constexpr since C++23
101};
102
103// 23.3.5.3 bitset operators:
104template <size_t N>
105bitset<N> operator&(const bitset<N>&, const bitset<N>&) noexcept; // constexpr since C++23
106
107template <size_t N>
108bitset<N> operator|(const bitset<N>&, const bitset<N>&) noexcept; // constexpr since C++23
109
110template <size_t N>
111bitset<N> operator^(const bitset<N>&, const bitset<N>&) noexcept; // constexpr since C++23
112
113template <class charT, class traits, size_t N>
114basic_istream<charT, traits>&
115operator>>(basic_istream<charT, traits>& is, bitset<N>& x);
116
117template <class charT, class traits, size_t N>
118basic_ostream<charT, traits>&
119operator<<(basic_ostream<charT, traits>& os, const bitset<N>& x);
120
121template <size_t N> struct hash<std::bitset<N>>;
122
123}  // std
124
125*/
126
127// clang-format on
128
129#include <__algorithm/count.h>
130#include <__algorithm/fill.h>
131#include <__algorithm/find.h>
132#include <__bit_reference>
133#include <__config>
134#include <__functional/hash.h>
135#include <__functional/unary_function.h>
136#include <__type_traits/is_char_like_type.h>
137#include <climits>
138#include <cstddef>
139#include <stdexcept>
140#include <string_view>
141#include <version>
142
143// standard-mandated includes
144
145// [bitset.syn]
146#include <iosfwd>
147#include <string>
148
149#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
150#  pragma GCC system_header
151#endif
152
153_LIBCPP_PUSH_MACROS
154#include <__undef_macros>
155
156_LIBCPP_BEGIN_NAMESPACE_STD
157
158template <size_t _N_words, size_t _Size>
159class __bitset;
160
161template <size_t _N_words, size_t _Size>
162struct __has_storage_type<__bitset<_N_words, _Size> > {
163  static const bool value = true;
164};
165
166template <size_t _N_words, size_t _Size>
167class __bitset {
168public:
169  typedef ptrdiff_t difference_type;
170  typedef size_t size_type;
171  typedef size_type __storage_type;
172
173protected:
174  typedef __bitset __self;
175  typedef __storage_type* __storage_pointer;
176  typedef const __storage_type* __const_storage_pointer;
177  static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT);
178
179  friend class __bit_reference<__bitset>;
180  friend class __bit_const_reference<__bitset>;
181  friend class __bit_iterator<__bitset, false>;
182  friend class __bit_iterator<__bitset, true>;
183  friend struct __bit_array<__bitset>;
184
185  __storage_type __first_[_N_words];
186
187  typedef __bit_reference<__bitset> reference;
188  typedef __bit_const_reference<__bitset> const_reference;
189  typedef __bit_iterator<__bitset, false> iterator;
190  typedef __bit_iterator<__bitset, true> const_iterator;
191
192  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT;
193  _LIBCPP_HIDE_FROM_ABI explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT;
194
195  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 reference __make_ref(size_t __pos) _NOEXCEPT {
196    return reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word);
197  }
198  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR const_reference __make_ref(size_t __pos) const _NOEXCEPT {
199    return const_reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word);
200  }
201  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 iterator __make_iter(size_t __pos) _NOEXCEPT {
202    return iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word);
203  }
204  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 const_iterator __make_iter(size_t __pos) const _NOEXCEPT {
205    return const_iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word);
206  }
207
208  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator&=(const __bitset& __v) _NOEXCEPT;
209  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator|=(const __bitset& __v) _NOEXCEPT;
210  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator^=(const __bitset& __v) _NOEXCEPT;
211
212  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void flip() _NOEXCEPT;
213  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong() const {
214    return to_ulong(integral_constant < bool, _Size< sizeof(unsigned long) * CHAR_BIT>());
215  }
216  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong() const {
217    return to_ullong(integral_constant < bool, _Size< sizeof(unsigned long long) * CHAR_BIT>());
218  }
219
220  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool all() const _NOEXCEPT;
221  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool any() const _NOEXCEPT;
222  _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT;
223
224private:
225#ifdef _LIBCPP_CXX03_LANG
226  void __init(unsigned long long __v, false_type) _NOEXCEPT;
227  _LIBCPP_HIDE_FROM_ABI void __init(unsigned long long __v, true_type) _NOEXCEPT;
228#endif // _LIBCPP_CXX03_LANG
229  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong(false_type) const;
230  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong(true_type) const;
231  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong(false_type) const;
232  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong(true_type) const;
233  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong(true_type, false_type) const;
234  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong(true_type, true_type) const;
235};
236
237template <size_t _N_words, size_t _Size>
238inline _LIBCPP_CONSTEXPR __bitset<_N_words, _Size>::__bitset() _NOEXCEPT
239#ifndef _LIBCPP_CXX03_LANG
240    : __first_{0}
241#endif
242{
243#ifdef _LIBCPP_CXX03_LANG
244  std::fill_n(__first_, _N_words, __storage_type(0));
245#endif
246}
247
248#ifdef _LIBCPP_CXX03_LANG
249
250template <size_t _N_words, size_t _Size>
251void __bitset<_N_words, _Size>::__init(unsigned long long __v, false_type) _NOEXCEPT {
252  __storage_type __t[sizeof(unsigned long long) / sizeof(__storage_type)];
253  size_t __sz = _Size;
254  for (size_t __i = 0; __i < sizeof(__t) / sizeof(__t[0]); ++__i, __v >>= __bits_per_word, __sz -= __bits_per_word)
255    if (__sz < __bits_per_word)
256      __t[__i] = static_cast<__storage_type>(__v) & (1ULL << __sz) - 1;
257    else
258      __t[__i] = static_cast<__storage_type>(__v);
259
260  std::copy(__t, __t + sizeof(__t) / sizeof(__t[0]), __first_);
261  std::fill(
262      __first_ + sizeof(__t) / sizeof(__t[0]), __first_ + sizeof(__first_) / sizeof(__first_[0]), __storage_type(0));
263}
264
265template <size_t _N_words, size_t _Size>
266inline _LIBCPP_HIDE_FROM_ABI void __bitset<_N_words, _Size>::__init(unsigned long long __v, true_type) _NOEXCEPT {
267  __first_[0] = __v;
268  if (_Size < __bits_per_word)
269    __first_[0] &= (1ULL << _Size) - 1;
270
271  std::fill(__first_ + 1, __first_ + sizeof(__first_) / sizeof(__first_[0]), __storage_type(0));
272}
273
274#endif // _LIBCPP_CXX03_LANG
275
276template <size_t _N_words, size_t _Size>
277inline _LIBCPP_CONSTEXPR __bitset<_N_words, _Size>::__bitset(unsigned long long __v) _NOEXCEPT
278#ifndef _LIBCPP_CXX03_LANG
279#  if __SIZEOF_SIZE_T__ == 8
280    : __first_{__v}
281#  elif __SIZEOF_SIZE_T__ == 4
282    : __first_{static_cast<__storage_type>(__v),
283               _Size >= 2 * __bits_per_word
284                   ? static_cast<__storage_type>(__v >> __bits_per_word)
285                   : static_cast<__storage_type>((__v >> __bits_per_word) &
286                                                 (__storage_type(1) << (_Size - __bits_per_word)) - 1)}
287#  else
288#    error This constructor has not been ported to this platform
289#  endif
290#endif
291{
292#ifdef _LIBCPP_CXX03_LANG
293  __init(__v, integral_constant<bool, sizeof(unsigned long long) == sizeof(__storage_type)>());
294#endif
295}
296
297template <size_t _N_words, size_t _Size>
298inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
299__bitset<_N_words, _Size>::operator&=(const __bitset& __v) _NOEXCEPT {
300  for (size_type __i = 0; __i < _N_words; ++__i)
301    __first_[__i] &= __v.__first_[__i];
302}
303
304template <size_t _N_words, size_t _Size>
305inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
306__bitset<_N_words, _Size>::operator|=(const __bitset& __v) _NOEXCEPT {
307  for (size_type __i = 0; __i < _N_words; ++__i)
308    __first_[__i] |= __v.__first_[__i];
309}
310
311template <size_t _N_words, size_t _Size>
312inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
313__bitset<_N_words, _Size>::operator^=(const __bitset& __v) _NOEXCEPT {
314  for (size_type __i = 0; __i < _N_words; ++__i)
315    __first_[__i] ^= __v.__first_[__i];
316}
317
318template <size_t _N_words, size_t _Size>
319_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void __bitset<_N_words, _Size>::flip() _NOEXCEPT {
320  // do middle whole words
321  size_type __n         = _Size;
322  __storage_pointer __p = __first_;
323  for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word)
324    *__p = ~*__p;
325  // do last partial word
326  if (__n > 0) {
327    __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n);
328    __storage_type __b = *__p & __m;
329    *__p &= ~__m;
330    *__p |= ~__b & __m;
331  }
332}
333
334template <size_t _N_words, size_t _Size>
335_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long
336__bitset<_N_words, _Size>::to_ulong(false_type) const {
337  const_iterator __e = __make_iter(_Size);
338  const_iterator __i = std::find(__make_iter(sizeof(unsigned long) * CHAR_BIT), __e, true);
339  if (__i != __e)
340    __throw_overflow_error("bitset to_ulong overflow error");
341
342  return __first_[0];
343}
344
345template <size_t _N_words, size_t _Size>
346inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long
347__bitset<_N_words, _Size>::to_ulong(true_type) const {
348  return __first_[0];
349}
350
351template <size_t _N_words, size_t _Size>
352_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long
353__bitset<_N_words, _Size>::to_ullong(false_type) const {
354  const_iterator __e = __make_iter(_Size);
355  const_iterator __i = std::find(__make_iter(sizeof(unsigned long long) * CHAR_BIT), __e, true);
356  if (__i != __e)
357    __throw_overflow_error("bitset to_ullong overflow error");
358
359  return to_ullong(true_type());
360}
361
362template <size_t _N_words, size_t _Size>
363inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long
364__bitset<_N_words, _Size>::to_ullong(true_type) const {
365  return to_ullong(true_type(), integral_constant<bool, sizeof(__storage_type) < sizeof(unsigned long long)>());
366}
367
368template <size_t _N_words, size_t _Size>
369inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long
370__bitset<_N_words, _Size>::to_ullong(true_type, false_type) const {
371  return __first_[0];
372}
373
374template <size_t _N_words, size_t _Size>
375_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long
376__bitset<_N_words, _Size>::to_ullong(true_type, true_type) const {
377  unsigned long long __r = __first_[0];
378  _LIBCPP_DIAGNOSTIC_PUSH
379  _LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wshift-count-overflow")
380  for (size_t __i = 1; __i < sizeof(unsigned long long) / sizeof(__storage_type); ++__i)
381    __r |= static_cast<unsigned long long>(__first_[__i]) << (sizeof(__storage_type) * CHAR_BIT);
382  _LIBCPP_DIAGNOSTIC_POP
383  return __r;
384}
385
386template <size_t _N_words, size_t _Size>
387_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool __bitset<_N_words, _Size>::all() const _NOEXCEPT {
388  // do middle whole words
389  size_type __n               = _Size;
390  __const_storage_pointer __p = __first_;
391  for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word)
392    if (~*__p)
393      return false;
394  // do last partial word
395  if (__n > 0) {
396    __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n);
397    if (~*__p & __m)
398      return false;
399  }
400  return true;
401}
402
403template <size_t _N_words, size_t _Size>
404_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool __bitset<_N_words, _Size>::any() const _NOEXCEPT {
405  // do middle whole words
406  size_type __n               = _Size;
407  __const_storage_pointer __p = __first_;
408  for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word)
409    if (*__p)
410      return true;
411  // do last partial word
412  if (__n > 0) {
413    __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n);
414    if (*__p & __m)
415      return true;
416  }
417  return false;
418}
419
420template <size_t _N_words, size_t _Size>
421inline size_t __bitset<_N_words, _Size>::__hash_code() const _NOEXCEPT {
422  size_t __h = 0;
423  for (size_type __i = 0; __i < _N_words; ++__i)
424    __h ^= __first_[__i];
425  return __h;
426}
427
428template <size_t _Size>
429class __bitset<1, _Size> {
430public:
431  typedef ptrdiff_t difference_type;
432  typedef size_t size_type;
433  typedef size_type __storage_type;
434
435protected:
436  typedef __bitset __self;
437  typedef __storage_type* __storage_pointer;
438  typedef const __storage_type* __const_storage_pointer;
439  static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT);
440
441  friend class __bit_reference<__bitset>;
442  friend class __bit_const_reference<__bitset>;
443  friend class __bit_iterator<__bitset, false>;
444  friend class __bit_iterator<__bitset, true>;
445  friend struct __bit_array<__bitset>;
446
447  __storage_type __first_;
448
449  typedef __bit_reference<__bitset> reference;
450  typedef __bit_const_reference<__bitset> const_reference;
451  typedef __bit_iterator<__bitset, false> iterator;
452  typedef __bit_iterator<__bitset, true> const_iterator;
453
454  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT;
455  _LIBCPP_HIDE_FROM_ABI explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT;
456
457  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 reference __make_ref(size_t __pos) _NOEXCEPT {
458    return reference(&__first_, __storage_type(1) << __pos);
459  }
460  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR const_reference __make_ref(size_t __pos) const _NOEXCEPT {
461    return const_reference(&__first_, __storage_type(1) << __pos);
462  }
463  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 iterator __make_iter(size_t __pos) _NOEXCEPT {
464    return iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);
465  }
466  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 const_iterator __make_iter(size_t __pos) const _NOEXCEPT {
467    return const_iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);
468  }
469
470  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator&=(const __bitset& __v) _NOEXCEPT;
471  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator|=(const __bitset& __v) _NOEXCEPT;
472  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator^=(const __bitset& __v) _NOEXCEPT;
473
474  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void flip() _NOEXCEPT;
475
476  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong() const;
477  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong() const;
478
479  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool all() const _NOEXCEPT;
480  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool any() const _NOEXCEPT;
481
482  _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT;
483};
484
485template <size_t _Size>
486inline _LIBCPP_CONSTEXPR __bitset<1, _Size>::__bitset() _NOEXCEPT : __first_(0) {}
487
488template <size_t _Size>
489inline _LIBCPP_CONSTEXPR __bitset<1, _Size>::__bitset(unsigned long long __v) _NOEXCEPT
490    : __first_(_Size == __bits_per_word ? static_cast<__storage_type>(__v)
491                                        : static_cast<__storage_type>(__v) & ((__storage_type(1) << _Size) - 1)) {}
492
493template <size_t _Size>
494inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
495__bitset<1, _Size>::operator&=(const __bitset& __v) _NOEXCEPT {
496  __first_ &= __v.__first_;
497}
498
499template <size_t _Size>
500inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
501__bitset<1, _Size>::operator|=(const __bitset& __v) _NOEXCEPT {
502  __first_ |= __v.__first_;
503}
504
505template <size_t _Size>
506inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
507__bitset<1, _Size>::operator^=(const __bitset& __v) _NOEXCEPT {
508  __first_ ^= __v.__first_;
509}
510
511template <size_t _Size>
512inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void __bitset<1, _Size>::flip() _NOEXCEPT {
513  __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size);
514  __first_           = ~__first_;
515  __first_ &= __m;
516}
517
518template <size_t _Size>
519inline _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long __bitset<1, _Size>::to_ulong() const {
520  return __first_;
521}
522
523template <size_t _Size>
524inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long __bitset<1, _Size>::to_ullong() const {
525  return __first_;
526}
527
528template <size_t _Size>
529inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool __bitset<1, _Size>::all() const _NOEXCEPT {
530  __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size);
531  return !(~__first_ & __m);
532}
533
534template <size_t _Size>
535inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool __bitset<1, _Size>::any() const _NOEXCEPT {
536  __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size);
537  return __first_ & __m;
538}
539
540template <size_t _Size>
541inline size_t __bitset<1, _Size>::__hash_code() const _NOEXCEPT {
542  return __first_;
543}
544
545template <>
546class __bitset<0, 0> {
547public:
548  typedef ptrdiff_t difference_type;
549  typedef size_t size_type;
550  typedef size_type __storage_type;
551
552protected:
553  typedef __bitset __self;
554  typedef __storage_type* __storage_pointer;
555  typedef const __storage_type* __const_storage_pointer;
556  static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT);
557
558  friend class __bit_reference<__bitset>;
559  friend class __bit_const_reference<__bitset>;
560  friend class __bit_iterator<__bitset, false>;
561  friend class __bit_iterator<__bitset, true>;
562  friend struct __bit_array<__bitset>;
563
564  typedef __bit_reference<__bitset> reference;
565  typedef __bit_const_reference<__bitset> const_reference;
566  typedef __bit_iterator<__bitset, false> iterator;
567  typedef __bit_iterator<__bitset, true> const_iterator;
568
569  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT;
570  _LIBCPP_HIDE_FROM_ABI explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long) _NOEXCEPT;
571
572  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 reference __make_ref(size_t) _NOEXCEPT {
573    return reference(nullptr, 1);
574  }
575  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR const_reference __make_ref(size_t) const _NOEXCEPT {
576    return const_reference(nullptr, 1);
577  }
578  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 iterator __make_iter(size_t) _NOEXCEPT {
579    return iterator(nullptr, 0);
580  }
581  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 const_iterator __make_iter(size_t) const _NOEXCEPT {
582    return const_iterator(nullptr, 0);
583  }
584
585  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator&=(const __bitset&) _NOEXCEPT {}
586  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator|=(const __bitset&) _NOEXCEPT {}
587  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator^=(const __bitset&) _NOEXCEPT {}
588
589  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void flip() _NOEXCEPT {}
590
591  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong() const { return 0; }
592  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong() const { return 0; }
593
594  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool all() const _NOEXCEPT { return true; }
595  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool any() const _NOEXCEPT { return false; }
596
597  _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT { return 0; }
598};
599
600inline _LIBCPP_CONSTEXPR __bitset<0, 0>::__bitset() _NOEXCEPT {}
601
602inline _LIBCPP_CONSTEXPR __bitset<0, 0>::__bitset(unsigned long long) _NOEXCEPT {}
603
604template <size_t _Size>
605class _LIBCPP_TEMPLATE_VIS bitset;
606template <size_t _Size>
607struct hash<bitset<_Size> >;
608
609template <size_t _Size>
610class _LIBCPP_TEMPLATE_VIS bitset
611    : private __bitset<_Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1, _Size> {
612public:
613  static const unsigned __n_words = _Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1;
614  typedef __bitset<__n_words, _Size> base;
615
616public:
617  typedef typename base::reference reference;
618  typedef typename base::const_reference const_reference;
619
620  // 23.3.5.1 constructors:
621  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bitset() _NOEXCEPT {}
622  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bitset(unsigned long long __v) _NOEXCEPT : base(__v) {}
623  template <class _CharT, __enable_if_t<_IsCharLikeType<_CharT>::value, int> = 0>
624  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 explicit bitset(
625      const _CharT* __str,
626#if _LIBCPP_STD_VER >= 26
627      typename basic_string_view<_CharT>::size_type __n = basic_string_view<_CharT>::npos,
628#else
629      typename basic_string<_CharT>::size_type __n = basic_string<_CharT>::npos,
630#endif
631      _CharT __zero = _CharT('0'),
632      _CharT __one  = _CharT('1')) {
633
634    size_t __rlen = std::min(__n, char_traits<_CharT>::length(__str));
635    __init_from_string_view(basic_string_view<_CharT>(__str, __rlen), __zero, __one);
636  }
637#if _LIBCPP_STD_VER >= 26
638  template <class _CharT, class _Traits>
639  _LIBCPP_HIDE_FROM_ABI constexpr explicit bitset(
640      basic_string_view<_CharT, _Traits> __str,
641      typename basic_string_view<_CharT, _Traits>::size_type __pos = 0,
642      typename basic_string_view<_CharT, _Traits>::size_type __n   = basic_string_view<_CharT, _Traits>::npos,
643      _CharT __zero                                                = _CharT('0'),
644      _CharT __one                                                 = _CharT('1')) {
645    if (__pos > __str.size())
646      __throw_out_of_range("bitset string pos out of range");
647
648    size_t __rlen = std::min(__n, __str.size() - __pos);
649    __init_from_string_view(basic_string_view<_CharT, _Traits>(__str.data() + __pos, __rlen), __zero, __one);
650  }
651#endif
652  template <class _CharT, class _Traits, class _Allocator>
653  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 explicit bitset(
654      const basic_string<_CharT, _Traits, _Allocator>& __str,
655      typename basic_string<_CharT, _Traits, _Allocator>::size_type __pos = 0,
656      typename basic_string<_CharT, _Traits, _Allocator>::size_type __n =
657          basic_string<_CharT, _Traits, _Allocator>::npos,
658      _CharT __zero = _CharT('0'),
659      _CharT __one  = _CharT('1')) {
660    if (__pos > __str.size())
661      std::__throw_out_of_range("bitset string pos out of range");
662
663    size_t __rlen = std::min(__n, __str.size() - __pos);
664    __init_from_string_view(basic_string_view<_CharT, _Traits>(__str.data() + __pos, __rlen), __zero, __one);
665  }
666
667  // 23.3.5.2 bitset operations:
668  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& operator&=(const bitset& __rhs) _NOEXCEPT;
669  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& operator|=(const bitset& __rhs) _NOEXCEPT;
670  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& operator^=(const bitset& __rhs) _NOEXCEPT;
671  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& operator<<=(size_t __pos) _NOEXCEPT;
672  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& operator>>=(size_t __pos) _NOEXCEPT;
673  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& set() _NOEXCEPT;
674  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& set(size_t __pos, bool __val = true);
675  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& reset() _NOEXCEPT;
676  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& reset(size_t __pos);
677  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset operator~() const _NOEXCEPT;
678  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& flip() _NOEXCEPT;
679  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& flip(size_t __pos);
680
681  // element access:
682#ifdef _LIBCPP_ABI_BITSET_VECTOR_BOOL_CONST_SUBSCRIPT_RETURN_BOOL
683  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool operator[](size_t __p) const { return base::__make_ref(__p); }
684#else
685  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR const_reference operator[](size_t __p) const { return base::__make_ref(__p); }
686#endif
687  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 reference operator[](size_t __p) { return base::__make_ref(__p); }
688  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong() const;
689  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong() const;
690  template <class _CharT, class _Traits, class _Allocator>
691  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, _Allocator>
692  to_string(_CharT __zero = _CharT('0'), _CharT __one = _CharT('1')) const;
693  template <class _CharT, class _Traits>
694  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, allocator<_CharT> >
695  to_string(_CharT __zero = _CharT('0'), _CharT __one = _CharT('1')) const;
696  template <class _CharT>
697  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> >
698  to_string(_CharT __zero = _CharT('0'), _CharT __one = _CharT('1')) const;
699  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<char, char_traits<char>, allocator<char> >
700  to_string(char __zero = '0', char __one = '1') const;
701  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 size_t count() const _NOEXCEPT;
702  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR size_t size() const _NOEXCEPT { return _Size; }
703  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool operator==(const bitset& __rhs) const _NOEXCEPT;
704#if _LIBCPP_STD_VER <= 17
705  _LIBCPP_HIDE_FROM_ABI bool operator!=(const bitset& __rhs) const _NOEXCEPT;
706#endif
707  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool test(size_t __pos) const;
708  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool all() const _NOEXCEPT;
709  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool any() const _NOEXCEPT;
710  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool none() const _NOEXCEPT { return !any(); }
711  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset operator<<(size_t __pos) const _NOEXCEPT;
712  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset operator>>(size_t __pos) const _NOEXCEPT;
713
714private:
715  template <class _CharT, class _Traits>
716  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
717  __init_from_string_view(basic_string_view<_CharT, _Traits> __str, _CharT __zero, _CharT __one) {
718    for (size_t __i = 0; __i < __str.size(); ++__i)
719      if (!_Traits::eq(__str[__i], __zero) && !_Traits::eq(__str[__i], __one))
720        std::__throw_invalid_argument("bitset string ctor has invalid argument");
721
722    size_t __mp = std::min(__str.size(), _Size);
723    size_t __i  = 0;
724    for (; __i < __mp; ++__i) {
725      _CharT __c   = __str[__mp - 1 - __i];
726      (*this)[__i] = _Traits::eq(__c, __one);
727    }
728    std::fill(base::__make_iter(__i), base::__make_iter(_Size), false);
729  }
730
731  _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT { return base::__hash_code(); }
732
733  friend struct hash<bitset>;
734};
735
736template <size_t _Size>
737inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>&
738bitset<_Size>::operator&=(const bitset& __rhs) _NOEXCEPT {
739  base::operator&=(__rhs);
740  return *this;
741}
742
743template <size_t _Size>
744inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>&
745bitset<_Size>::operator|=(const bitset& __rhs) _NOEXCEPT {
746  base::operator|=(__rhs);
747  return *this;
748}
749
750template <size_t _Size>
751inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>&
752bitset<_Size>::operator^=(const bitset& __rhs) _NOEXCEPT {
753  base::operator^=(__rhs);
754  return *this;
755}
756
757template <size_t _Size>
758_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::operator<<=(size_t __pos) _NOEXCEPT {
759  __pos = std::min(__pos, _Size);
760  std::copy_backward(base::__make_iter(0), base::__make_iter(_Size - __pos), base::__make_iter(_Size));
761  std::fill_n(base::__make_iter(0), __pos, false);
762  return *this;
763}
764
765template <size_t _Size>
766_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::operator>>=(size_t __pos) _NOEXCEPT {
767  __pos = std::min(__pos, _Size);
768  std::copy(base::__make_iter(__pos), base::__make_iter(_Size), base::__make_iter(0));
769  std::fill_n(base::__make_iter(_Size - __pos), __pos, false);
770  return *this;
771}
772
773template <size_t _Size>
774inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::set() _NOEXCEPT {
775  std::fill_n(base::__make_iter(0), _Size, true);
776  return *this;
777}
778
779template <size_t _Size>
780_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::set(size_t __pos, bool __val) {
781  if (__pos >= _Size)
782    __throw_out_of_range("bitset set argument out of range");
783
784  (*this)[__pos] = __val;
785  return *this;
786}
787
788template <size_t _Size>
789inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::reset() _NOEXCEPT {
790  std::fill_n(base::__make_iter(0), _Size, false);
791  return *this;
792}
793
794template <size_t _Size>
795_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::reset(size_t __pos) {
796  if (__pos >= _Size)
797    __throw_out_of_range("bitset reset argument out of range");
798
799  (*this)[__pos] = false;
800  return *this;
801}
802
803template <size_t _Size>
804inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size> bitset<_Size>::operator~() const _NOEXCEPT {
805  bitset __x(*this);
806  __x.flip();
807  return __x;
808}
809
810template <size_t _Size>
811inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::flip() _NOEXCEPT {
812  base::flip();
813  return *this;
814}
815
816template <size_t _Size>
817_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::flip(size_t __pos) {
818  if (__pos >= _Size)
819    __throw_out_of_range("bitset flip argument out of range");
820
821  reference __r = base::__make_ref(__pos);
822  __r           = ~__r;
823  return *this;
824}
825
826template <size_t _Size>
827inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long bitset<_Size>::to_ulong() const {
828  return base::to_ulong();
829}
830
831template <size_t _Size>
832inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long bitset<_Size>::to_ullong() const {
833  return base::to_ullong();
834}
835
836template <size_t _Size>
837template <class _CharT, class _Traits, class _Allocator>
838_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, _Allocator>
839bitset<_Size>::to_string(_CharT __zero, _CharT __one) const {
840  basic_string<_CharT, _Traits, _Allocator> __r(_Size, __zero);
841  for (size_t __i = 0; __i != _Size; ++__i) {
842    if ((*this)[__i])
843      __r[_Size - 1 - __i] = __one;
844  }
845  return __r;
846}
847
848template <size_t _Size>
849template <class _CharT, class _Traits>
850inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, allocator<_CharT> >
851bitset<_Size>::to_string(_CharT __zero, _CharT __one) const {
852  return to_string<_CharT, _Traits, allocator<_CharT> >(__zero, __one);
853}
854
855template <size_t _Size>
856template <class _CharT>
857inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> >
858bitset<_Size>::to_string(_CharT __zero, _CharT __one) const {
859  return to_string<_CharT, char_traits<_CharT>, allocator<_CharT> >(__zero, __one);
860}
861
862template <size_t _Size>
863inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<char, char_traits<char>, allocator<char> >
864bitset<_Size>::to_string(char __zero, char __one) const {
865  return to_string<char, char_traits<char>, allocator<char> >(__zero, __one);
866}
867
868template <size_t _Size>
869inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 size_t bitset<_Size>::count() const _NOEXCEPT {
870  return static_cast<size_t>(std::count(base::__make_iter(0), base::__make_iter(_Size), true));
871}
872
873template <size_t _Size>
874inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool
875bitset<_Size>::operator==(const bitset& __rhs) const _NOEXCEPT {
876  return std::equal(base::__make_iter(0), base::__make_iter(_Size), __rhs.__make_iter(0));
877}
878
879#if _LIBCPP_STD_VER <= 17
880
881template <size_t _Size>
882inline _LIBCPP_HIDE_FROM_ABI bool bitset<_Size>::operator!=(const bitset& __rhs) const _NOEXCEPT {
883  return !(*this == __rhs);
884}
885
886#endif
887
888template <size_t _Size>
889_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool bitset<_Size>::test(size_t __pos) const {
890  if (__pos >= _Size)
891    __throw_out_of_range("bitset test argument out of range");
892
893  return (*this)[__pos];
894}
895
896template <size_t _Size>
897inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool bitset<_Size>::all() const _NOEXCEPT {
898  return base::all();
899}
900
901template <size_t _Size>
902inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool bitset<_Size>::any() const _NOEXCEPT {
903  return base::any();
904}
905
906template <size_t _Size>
907inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
908bitset<_Size>::operator<<(size_t __pos) const _NOEXCEPT {
909  bitset __r = *this;
910  __r <<= __pos;
911  return __r;
912}
913
914template <size_t _Size>
915inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
916bitset<_Size>::operator>>(size_t __pos) const _NOEXCEPT {
917  bitset __r = *this;
918  __r >>= __pos;
919  return __r;
920}
921
922template <size_t _Size>
923inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
924operator&(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT {
925  bitset<_Size> __r = __x;
926  __r &= __y;
927  return __r;
928}
929
930template <size_t _Size>
931inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
932operator|(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT {
933  bitset<_Size> __r = __x;
934  __r |= __y;
935  return __r;
936}
937
938template <size_t _Size>
939inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
940operator^(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT {
941  bitset<_Size> __r = __x;
942  __r ^= __y;
943  return __r;
944}
945
946template <size_t _Size>
947struct _LIBCPP_TEMPLATE_VIS hash<bitset<_Size> > : public __unary_function<bitset<_Size>, size_t> {
948  _LIBCPP_HIDE_FROM_ABI size_t operator()(const bitset<_Size>& __bs) const _NOEXCEPT { return __bs.__hash_code(); }
949};
950
951template <class _CharT, class _Traits, size_t _Size>
952_LIBCPP_HIDE_FROM_ABI basic_istream<_CharT, _Traits>&
953operator>>(basic_istream<_CharT, _Traits>& __is, bitset<_Size>& __x);
954
955template <class _CharT, class _Traits, size_t _Size>
956_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>&
957operator<<(basic_ostream<_CharT, _Traits>& __os, const bitset<_Size>& __x);
958
959_LIBCPP_END_NAMESPACE_STD
960
961_LIBCPP_POP_MACROS
962
963#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
964#  include <concepts>
965#  include <cstdlib>
966#  include <type_traits>
967#endif
968
969#endif // _LIBCPP_BITSET
970