xref: /llvm-project/libcxx/include/bitset (revision 493c066a3dd8cbd665cf4065abf15e9f3c63741f) 
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#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
130#  include <__cxx03/bitset>
131#else
132#  include <__algorithm/count.h>
133#  include <__algorithm/fill.h>
134#  include <__algorithm/fill_n.h>
135#  include <__algorithm/find.h>
136#  include <__assert>
137#  include <__bit_reference>
138#  include <__config>
139#  include <__cstddef/ptrdiff_t.h>
140#  include <__cstddef/size_t.h>
141#  include <__functional/hash.h>
142#  include <__functional/unary_function.h>
143#  include <__type_traits/is_char_like_type.h>
144#  include <climits>
145#  include <stdexcept>
146#  include <string_view>
147#  include <version>
148
149// standard-mandated includes
150
151// [bitset.syn]
152#  include <iosfwd>
153#  include <string>
154
155#  if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
156#    pragma GCC system_header
157#  endif
158
159_LIBCPP_PUSH_MACROS
160#  include <__undef_macros>
161
162_LIBCPP_BEGIN_NAMESPACE_STD
163
164template <size_t _N_words, size_t _Size>
165class __bitset;
166
167template <size_t _N_words, size_t _Size>
168struct __has_storage_type<__bitset<_N_words, _Size> > {
169  static const bool value = true;
170};
171
172template <size_t _N_words, size_t _Size>
173class __bitset {
174public:
175  typedef size_t __storage_type;
176
177protected:
178  typedef __bitset __self;
179  typedef __storage_type* __storage_pointer;
180  typedef const __storage_type* __const_storage_pointer;
181  static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT);
182
183  friend class __bit_reference<__bitset>;
184  friend class __bit_const_reference<__bitset>;
185  friend class __bit_iterator<__bitset, false>;
186  friend class __bit_iterator<__bitset, true>;
187  friend struct __bit_array<__bitset>;
188
189  __storage_type __first_[_N_words];
190
191  typedef __bit_reference<__bitset> reference;
192  typedef __bit_const_reference<__bitset> __const_reference;
193  typedef __bit_iterator<__bitset, false> __iterator;
194  typedef __bit_iterator<__bitset, true> __const_iterator;
195
196  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT;
197  _LIBCPP_HIDE_FROM_ABI explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT;
198
199  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 reference __make_ref(size_t __pos) _NOEXCEPT {
200    return reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word);
201  }
202  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __const_reference __make_ref(size_t __pos) const _NOEXCEPT {
203    return __const_reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word);
204  }
205  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 __iterator __make_iter(size_t __pos) _NOEXCEPT {
206    return __iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word);
207  }
208  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 __const_iterator __make_iter(size_t __pos) const _NOEXCEPT {
209    return __const_iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word);
210  }
211
212  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator&=(const __bitset& __v) _NOEXCEPT;
213  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator|=(const __bitset& __v) _NOEXCEPT;
214  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator^=(const __bitset& __v) _NOEXCEPT;
215
216  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void flip() _NOEXCEPT;
217  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong() const {
218    return to_ulong(integral_constant < bool, _Size< sizeof(unsigned long) * CHAR_BIT>());
219  }
220  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong() const {
221    return to_ullong(integral_constant < bool, _Size< sizeof(unsigned long long) * CHAR_BIT>());
222  }
223
224  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool all() const _NOEXCEPT;
225  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool any() const _NOEXCEPT;
226  _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT;
227
228private:
229#  ifdef _LIBCPP_CXX03_LANG
230  void __init(unsigned long long __v, false_type) _NOEXCEPT;
231  _LIBCPP_HIDE_FROM_ABI void __init(unsigned long long __v, true_type) _NOEXCEPT;
232#  endif // _LIBCPP_CXX03_LANG
233  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong(false_type) const;
234  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong(true_type) const;
235  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong(false_type) const;
236  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong(true_type) const;
237  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong(true_type, false_type) const;
238  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong(true_type, true_type) const;
239};
240
241template <size_t _N_words, size_t _Size>
242inline _LIBCPP_CONSTEXPR __bitset<_N_words, _Size>::__bitset() _NOEXCEPT
243#  ifndef _LIBCPP_CXX03_LANG
244    : __first_{0}
245#  endif
246{
247#  ifdef _LIBCPP_CXX03_LANG
248  std::fill_n(__first_, _N_words, __storage_type(0));
249#  endif
250}
251
252#  ifdef _LIBCPP_CXX03_LANG
253
254template <size_t _N_words, size_t _Size>
255void __bitset<_N_words, _Size>::__init(unsigned long long __v, false_type) _NOEXCEPT {
256  __storage_type __t[sizeof(unsigned long long) / sizeof(__storage_type)];
257  size_t __sz = _Size;
258  for (size_t __i = 0; __i < sizeof(__t) / sizeof(__t[0]); ++__i, __v >>= __bits_per_word, __sz -= __bits_per_word)
259    if (__sz < __bits_per_word)
260      __t[__i] = static_cast<__storage_type>(__v) & (1ULL << __sz) - 1;
261    else
262      __t[__i] = static_cast<__storage_type>(__v);
263
264  std::copy(__t, __t + sizeof(__t) / sizeof(__t[0]), __first_);
265  std::fill(
266      __first_ + sizeof(__t) / sizeof(__t[0]), __first_ + sizeof(__first_) / sizeof(__first_[0]), __storage_type(0));
267}
268
269template <size_t _N_words, size_t _Size>
270inline _LIBCPP_HIDE_FROM_ABI void __bitset<_N_words, _Size>::__init(unsigned long long __v, true_type) _NOEXCEPT {
271  __first_[0] = __v;
272  if (_Size < __bits_per_word)
273    __first_[0] &= (1ULL << _Size) - 1;
274
275  std::fill(__first_ + 1, __first_ + sizeof(__first_) / sizeof(__first_[0]), __storage_type(0));
276}
277
278#  endif // _LIBCPP_CXX03_LANG
279
280template <size_t _N_words, size_t _Size>
281inline _LIBCPP_CONSTEXPR __bitset<_N_words, _Size>::__bitset(unsigned long long __v) _NOEXCEPT
282#  ifndef _LIBCPP_CXX03_LANG
283#    if __SIZEOF_SIZE_T__ == 8
284    : __first_{__v}
285#    elif __SIZEOF_SIZE_T__ == 4
286    : __first_{static_cast<__storage_type>(__v),
287               _Size >= 2 * __bits_per_word
288                   ? static_cast<__storage_type>(__v >> __bits_per_word)
289                   : static_cast<__storage_type>((__v >> __bits_per_word) &
290                                                 (__storage_type(1) << (_Size - __bits_per_word)) - 1)}
291#    else
292#      error This constructor has not been ported to this platform
293#    endif
294#  endif
295{
296#  ifdef _LIBCPP_CXX03_LANG
297  __init(__v, integral_constant<bool, sizeof(unsigned long long) == sizeof(__storage_type)>());
298#  endif
299}
300
301template <size_t _N_words, size_t _Size>
302inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
303__bitset<_N_words, _Size>::operator&=(const __bitset& __v) _NOEXCEPT {
304  for (size_t __i = 0; __i < _N_words; ++__i)
305    __first_[__i] &= __v.__first_[__i];
306}
307
308template <size_t _N_words, size_t _Size>
309inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
310__bitset<_N_words, _Size>::operator|=(const __bitset& __v) _NOEXCEPT {
311  for (size_t __i = 0; __i < _N_words; ++__i)
312    __first_[__i] |= __v.__first_[__i];
313}
314
315template <size_t _N_words, size_t _Size>
316inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
317__bitset<_N_words, _Size>::operator^=(const __bitset& __v) _NOEXCEPT {
318  for (size_t __i = 0; __i < _N_words; ++__i)
319    __first_[__i] ^= __v.__first_[__i];
320}
321
322template <size_t _N_words, size_t _Size>
323_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void __bitset<_N_words, _Size>::flip() _NOEXCEPT {
324  // do middle whole words
325  size_t __n            = _Size;
326  __storage_pointer __p = __first_;
327  for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word)
328    *__p = ~*__p;
329  // do last partial word
330  if (__n > 0) {
331    __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n);
332    __storage_type __b = *__p & __m;
333    *__p &= ~__m;
334    *__p |= ~__b & __m;
335  }
336}
337
338template <size_t _N_words, size_t _Size>
339_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long
340__bitset<_N_words, _Size>::to_ulong(false_type) const {
341  __const_iterator __e = __make_iter(_Size);
342  __const_iterator __i = std::find(__make_iter(sizeof(unsigned long) * CHAR_BIT), __e, true);
343  if (__i != __e)
344    __throw_overflow_error("bitset to_ulong overflow error");
345
346  return __first_[0];
347}
348
349template <size_t _N_words, size_t _Size>
350inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long
351__bitset<_N_words, _Size>::to_ulong(true_type) const {
352  return __first_[0];
353}
354
355template <size_t _N_words, size_t _Size>
356_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long
357__bitset<_N_words, _Size>::to_ullong(false_type) const {
358  __const_iterator __e = __make_iter(_Size);
359  __const_iterator __i = std::find(__make_iter(sizeof(unsigned long long) * CHAR_BIT), __e, true);
360  if (__i != __e)
361    __throw_overflow_error("bitset to_ullong overflow error");
362
363  return to_ullong(true_type());
364}
365
366template <size_t _N_words, size_t _Size>
367inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long
368__bitset<_N_words, _Size>::to_ullong(true_type) const {
369  return to_ullong(true_type(), integral_constant<bool, sizeof(__storage_type) < sizeof(unsigned long long)>());
370}
371
372template <size_t _N_words, size_t _Size>
373inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long
374__bitset<_N_words, _Size>::to_ullong(true_type, false_type) const {
375  return __first_[0];
376}
377
378template <size_t _N_words, size_t _Size>
379_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long
380__bitset<_N_words, _Size>::to_ullong(true_type, true_type) const {
381  unsigned long long __r = __first_[0];
382  _LIBCPP_DIAGNOSTIC_PUSH
383  _LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wshift-count-overflow")
384  for (size_t __i = 1; __i < sizeof(unsigned long long) / sizeof(__storage_type); ++__i)
385    __r |= static_cast<unsigned long long>(__first_[__i]) << (sizeof(__storage_type) * CHAR_BIT);
386  _LIBCPP_DIAGNOSTIC_POP
387  return __r;
388}
389
390template <size_t _N_words, size_t _Size>
391_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool __bitset<_N_words, _Size>::all() const _NOEXCEPT {
392  // do middle whole words
393  size_t __n                  = _Size;
394  __const_storage_pointer __p = __first_;
395  for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word)
396    if (~*__p)
397      return false;
398  // do last partial word
399  if (__n > 0) {
400    __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n);
401    if (~*__p & __m)
402      return false;
403  }
404  return true;
405}
406
407template <size_t _N_words, size_t _Size>
408_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool __bitset<_N_words, _Size>::any() const _NOEXCEPT {
409  // do middle whole words
410  size_t __n                  = _Size;
411  __const_storage_pointer __p = __first_;
412  for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word)
413    if (*__p)
414      return true;
415  // do last partial word
416  if (__n > 0) {
417    __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n);
418    if (*__p & __m)
419      return true;
420  }
421  return false;
422}
423
424template <size_t _N_words, size_t _Size>
425inline size_t __bitset<_N_words, _Size>::__hash_code() const _NOEXCEPT {
426  size_t __h = 0;
427  for (size_t __i = 0; __i < _N_words; ++__i)
428    __h ^= __first_[__i];
429  return __h;
430}
431
432template <size_t _Size>
433class __bitset<1, _Size> {
434public:
435  typedef size_t __storage_type;
436
437protected:
438  typedef __bitset __self;
439  typedef __storage_type* __storage_pointer;
440  typedef const __storage_type* __const_storage_pointer;
441  static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT);
442
443  friend class __bit_reference<__bitset>;
444  friend class __bit_const_reference<__bitset>;
445  friend class __bit_iterator<__bitset, false>;
446  friend class __bit_iterator<__bitset, true>;
447  friend struct __bit_array<__bitset>;
448
449  __storage_type __first_;
450
451  typedef __bit_reference<__bitset> reference;
452  typedef __bit_const_reference<__bitset> __const_reference;
453  typedef __bit_iterator<__bitset, false> __iterator;
454  typedef __bit_iterator<__bitset, true> __const_iterator;
455
456  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT;
457  _LIBCPP_HIDE_FROM_ABI explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT;
458
459  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 reference __make_ref(size_t __pos) _NOEXCEPT {
460    return reference(&__first_, __storage_type(1) << __pos);
461  }
462  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __const_reference __make_ref(size_t __pos) const _NOEXCEPT {
463    return __const_reference(&__first_, __storage_type(1) << __pos);
464  }
465  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 __iterator __make_iter(size_t __pos) _NOEXCEPT {
466    return __iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);
467  }
468  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 __const_iterator __make_iter(size_t __pos) const _NOEXCEPT {
469    return __const_iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);
470  }
471
472  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator&=(const __bitset& __v) _NOEXCEPT;
473  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator|=(const __bitset& __v) _NOEXCEPT;
474  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator^=(const __bitset& __v) _NOEXCEPT;
475
476  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void flip() _NOEXCEPT;
477
478  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong() const;
479  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong() const;
480
481  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool all() const _NOEXCEPT;
482  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool any() const _NOEXCEPT;
483
484  _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT;
485};
486
487template <size_t _Size>
488inline _LIBCPP_CONSTEXPR __bitset<1, _Size>::__bitset() _NOEXCEPT : __first_(0) {}
489
490template <size_t _Size>
491inline _LIBCPP_CONSTEXPR __bitset<1, _Size>::__bitset(unsigned long long __v) _NOEXCEPT
492    : __first_(_Size == __bits_per_word ? static_cast<__storage_type>(__v)
493                                        : static_cast<__storage_type>(__v) & ((__storage_type(1) << _Size) - 1)) {}
494
495template <size_t _Size>
496inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
497__bitset<1, _Size>::operator&=(const __bitset& __v) _NOEXCEPT {
498  __first_ &= __v.__first_;
499}
500
501template <size_t _Size>
502inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
503__bitset<1, _Size>::operator|=(const __bitset& __v) _NOEXCEPT {
504  __first_ |= __v.__first_;
505}
506
507template <size_t _Size>
508inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
509__bitset<1, _Size>::operator^=(const __bitset& __v) _NOEXCEPT {
510  __first_ ^= __v.__first_;
511}
512
513template <size_t _Size>
514inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void __bitset<1, _Size>::flip() _NOEXCEPT {
515  __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size);
516  __first_           = ~__first_;
517  __first_ &= __m;
518}
519
520template <size_t _Size>
521inline _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long __bitset<1, _Size>::to_ulong() const {
522  return __first_;
523}
524
525template <size_t _Size>
526inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long __bitset<1, _Size>::to_ullong() const {
527  return __first_;
528}
529
530template <size_t _Size>
531inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool __bitset<1, _Size>::all() const _NOEXCEPT {
532  __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size);
533  return !(~__first_ & __m);
534}
535
536template <size_t _Size>
537inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool __bitset<1, _Size>::any() const _NOEXCEPT {
538  __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size);
539  return __first_ & __m;
540}
541
542template <size_t _Size>
543inline size_t __bitset<1, _Size>::__hash_code() const _NOEXCEPT {
544  return __first_;
545}
546
547template <>
548class __bitset<0, 0> {
549public:
550  typedef size_t __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 {
684    _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__p < _Size, "bitset::operator[] index out of bounds");
685    return __base::__make_ref(__p);
686  }
687#  else
688  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __const_reference operator[](size_t __p) const {
689    _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__p < _Size, "bitset::operator[] index out of bounds");
690    return __base::__make_ref(__p);
691  }
692#  endif
693  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 reference operator[](size_t __p) {
694    _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__p < _Size, "bitset::operator[] index out of bounds");
695    return __base::__make_ref(__p);
696  }
697  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong() const;
698  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong() const;
699  template <class _CharT, class _Traits, class _Allocator>
700  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, _Allocator>
701  to_string(_CharT __zero = _CharT('0'), _CharT __one = _CharT('1')) const;
702  template <class _CharT, class _Traits>
703  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, allocator<_CharT> >
704  to_string(_CharT __zero = _CharT('0'), _CharT __one = _CharT('1')) const;
705  template <class _CharT>
706  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> >
707  to_string(_CharT __zero = _CharT('0'), _CharT __one = _CharT('1')) const;
708  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<char, char_traits<char>, allocator<char> >
709  to_string(char __zero = '0', char __one = '1') const;
710  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 size_t count() const _NOEXCEPT;
711  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR size_t size() const _NOEXCEPT { return _Size; }
712  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool operator==(const bitset& __rhs) const _NOEXCEPT;
713#  if _LIBCPP_STD_VER <= 17
714  _LIBCPP_HIDE_FROM_ABI bool operator!=(const bitset& __rhs) const _NOEXCEPT;
715#  endif
716  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool test(size_t __pos) const;
717  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool all() const _NOEXCEPT;
718  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool any() const _NOEXCEPT;
719  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool none() const _NOEXCEPT { return !any(); }
720  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset operator<<(size_t __pos) const _NOEXCEPT;
721  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset operator>>(size_t __pos) const _NOEXCEPT;
722
723private:
724  template <class _CharT, class _Traits>
725  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
726  __init_from_string_view(basic_string_view<_CharT, _Traits> __str, _CharT __zero, _CharT __one) {
727    for (size_t __i = 0; __i < __str.size(); ++__i)
728      if (!_Traits::eq(__str[__i], __zero) && !_Traits::eq(__str[__i], __one))
729        std::__throw_invalid_argument("bitset string ctor has invalid argument");
730
731    size_t __mp = std::min(__str.size(), _Size);
732    size_t __i  = 0;
733    for (; __i < __mp; ++__i) {
734      _CharT __c   = __str[__mp - 1 - __i];
735      (*this)[__i] = _Traits::eq(__c, __one);
736    }
737    std::fill(__base::__make_iter(__i), __base::__make_iter(_Size), false);
738  }
739
740  _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT { return __base::__hash_code(); }
741
742  friend struct hash<bitset>;
743};
744
745template <size_t _Size>
746inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>&
747bitset<_Size>::operator&=(const bitset& __rhs) _NOEXCEPT {
748  __base::operator&=(__rhs);
749  return *this;
750}
751
752template <size_t _Size>
753inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>&
754bitset<_Size>::operator|=(const bitset& __rhs) _NOEXCEPT {
755  __base::operator|=(__rhs);
756  return *this;
757}
758
759template <size_t _Size>
760inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>&
761bitset<_Size>::operator^=(const bitset& __rhs) _NOEXCEPT {
762  __base::operator^=(__rhs);
763  return *this;
764}
765
766template <size_t _Size>
767_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::operator<<=(size_t __pos) _NOEXCEPT {
768  __pos = std::min(__pos, _Size);
769  std::copy_backward(__base::__make_iter(0), __base::__make_iter(_Size - __pos), __base::__make_iter(_Size));
770  std::fill_n(__base::__make_iter(0), __pos, false);
771  return *this;
772}
773
774template <size_t _Size>
775_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::operator>>=(size_t __pos) _NOEXCEPT {
776  __pos = std::min(__pos, _Size);
777  std::copy(__base::__make_iter(__pos), __base::__make_iter(_Size), __base::__make_iter(0));
778  std::fill_n(__base::__make_iter(_Size - __pos), __pos, false);
779  return *this;
780}
781
782template <size_t _Size>
783inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::set() _NOEXCEPT {
784  std::fill_n(__base::__make_iter(0), _Size, true);
785  return *this;
786}
787
788template <size_t _Size>
789_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::set(size_t __pos, bool __val) {
790  if (__pos >= _Size)
791    __throw_out_of_range("bitset set argument out of range");
792
793  (*this)[__pos] = __val;
794  return *this;
795}
796
797template <size_t _Size>
798inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::reset() _NOEXCEPT {
799  std::fill_n(__base::__make_iter(0), _Size, false);
800  return *this;
801}
802
803template <size_t _Size>
804_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::reset(size_t __pos) {
805  if (__pos >= _Size)
806    __throw_out_of_range("bitset reset argument out of range");
807
808  (*this)[__pos] = false;
809  return *this;
810}
811
812template <size_t _Size>
813inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size> bitset<_Size>::operator~() const _NOEXCEPT {
814  bitset __x(*this);
815  __x.flip();
816  return __x;
817}
818
819template <size_t _Size>
820inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::flip() _NOEXCEPT {
821  __base::flip();
822  return *this;
823}
824
825template <size_t _Size>
826_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::flip(size_t __pos) {
827  if (__pos >= _Size)
828    __throw_out_of_range("bitset flip argument out of range");
829
830  reference __r = __base::__make_ref(__pos);
831  __r           = ~__r;
832  return *this;
833}
834
835template <size_t _Size>
836inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long bitset<_Size>::to_ulong() const {
837  return __base::to_ulong();
838}
839
840template <size_t _Size>
841inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long bitset<_Size>::to_ullong() const {
842  return __base::to_ullong();
843}
844
845template <size_t _Size>
846template <class _CharT, class _Traits, class _Allocator>
847_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, _Allocator>
848bitset<_Size>::to_string(_CharT __zero, _CharT __one) const {
849  basic_string<_CharT, _Traits, _Allocator> __r(_Size, __zero);
850  for (size_t __i = 0; __i != _Size; ++__i) {
851    if ((*this)[__i])
852      __r[_Size - 1 - __i] = __one;
853  }
854  return __r;
855}
856
857template <size_t _Size>
858template <class _CharT, class _Traits>
859inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, allocator<_CharT> >
860bitset<_Size>::to_string(_CharT __zero, _CharT __one) const {
861  return to_string<_CharT, _Traits, allocator<_CharT> >(__zero, __one);
862}
863
864template <size_t _Size>
865template <class _CharT>
866inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> >
867bitset<_Size>::to_string(_CharT __zero, _CharT __one) const {
868  return to_string<_CharT, char_traits<_CharT>, allocator<_CharT> >(__zero, __one);
869}
870
871template <size_t _Size>
872inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<char, char_traits<char>, allocator<char> >
873bitset<_Size>::to_string(char __zero, char __one) const {
874  return to_string<char, char_traits<char>, allocator<char> >(__zero, __one);
875}
876
877template <size_t _Size>
878inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 size_t bitset<_Size>::count() const _NOEXCEPT {
879  return static_cast<size_t>(std::count(__base::__make_iter(0), __base::__make_iter(_Size), true));
880}
881
882template <size_t _Size>
883inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool
884bitset<_Size>::operator==(const bitset& __rhs) const _NOEXCEPT {
885  return std::equal(__base::__make_iter(0), __base::__make_iter(_Size), __rhs.__make_iter(0));
886}
887
888#  if _LIBCPP_STD_VER <= 17
889
890template <size_t _Size>
891inline _LIBCPP_HIDE_FROM_ABI bool bitset<_Size>::operator!=(const bitset& __rhs) const _NOEXCEPT {
892  return !(*this == __rhs);
893}
894
895#  endif
896
897template <size_t _Size>
898_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool bitset<_Size>::test(size_t __pos) const {
899  if (__pos >= _Size)
900    __throw_out_of_range("bitset test argument out of range");
901
902  return (*this)[__pos];
903}
904
905template <size_t _Size>
906inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool bitset<_Size>::all() const _NOEXCEPT {
907  return __base::all();
908}
909
910template <size_t _Size>
911inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool bitset<_Size>::any() const _NOEXCEPT {
912  return __base::any();
913}
914
915template <size_t _Size>
916inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
917bitset<_Size>::operator<<(size_t __pos) const _NOEXCEPT {
918  bitset __r = *this;
919  __r <<= __pos;
920  return __r;
921}
922
923template <size_t _Size>
924inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
925bitset<_Size>::operator>>(size_t __pos) const _NOEXCEPT {
926  bitset __r = *this;
927  __r >>= __pos;
928  return __r;
929}
930
931template <size_t _Size>
932inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
933operator&(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT {
934  bitset<_Size> __r = __x;
935  __r &= __y;
936  return __r;
937}
938
939template <size_t _Size>
940inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
941operator|(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT {
942  bitset<_Size> __r = __x;
943  __r |= __y;
944  return __r;
945}
946
947template <size_t _Size>
948inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
949operator^(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT {
950  bitset<_Size> __r = __x;
951  __r ^= __y;
952  return __r;
953}
954
955template <size_t _Size>
956struct _LIBCPP_TEMPLATE_VIS hash<bitset<_Size> > : public __unary_function<bitset<_Size>, size_t> {
957  _LIBCPP_HIDE_FROM_ABI size_t operator()(const bitset<_Size>& __bs) const _NOEXCEPT { return __bs.__hash_code(); }
958};
959
960template <class _CharT, class _Traits, size_t _Size>
961_LIBCPP_HIDE_FROM_ABI basic_istream<_CharT, _Traits>&
962operator>>(basic_istream<_CharT, _Traits>& __is, bitset<_Size>& __x);
963
964template <class _CharT, class _Traits, size_t _Size>
965_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>&
966operator<<(basic_ostream<_CharT, _Traits>& __os, const bitset<_Size>& __x);
967
968_LIBCPP_END_NAMESPACE_STD
969
970_LIBCPP_POP_MACROS
971
972#  if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
973#    include <concepts>
974#    include <cstdlib>
975#    include <type_traits>
976#  endif
977#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
978
979#endif // _LIBCPP_BITSET
980