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diff --git a/third_party/libcxx/include/c++/v1/bitset b/third_party/libcxx/include/c++/v1/bitset
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+++ b/third_party/libcxx/include/c++/v1/bitset
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+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_BITSET
+#define _LIBCPP_BITSET
+
+// clang-format off
+
+/*
+ bitset synopsis
+
+namespace std
+{
+
+namespace std {
+
+template <size_t N>
+class bitset
+{
+public:
+ // bit reference:
+ class reference
+ {
+ friend class bitset;
+ reference() noexcept;
+ public:
+ ~reference() noexcept;
+ reference& operator=(bool x) noexcept; // for b[i] = x;
+ reference& operator=(const reference&) noexcept; // for b[i] = b[j];
+ bool operator~() const noexcept; // flips the bit
+ operator bool() const noexcept; // for x = b[i];
+ reference& flip() noexcept; // for b[i].flip();
+ };
+
+ // 23.3.5.1 constructors:
+ constexpr bitset() noexcept;
+ constexpr bitset(unsigned long long val) noexcept;
+ template <class charT>
+ constexpr explicit bitset(const charT* str,
+ typename basic_string<charT>::size_type n = basic_string<charT>::npos,
+ charT zero = charT('0'), charT one = charT('1')); // until C++26, constexpr since C++23
+ template <class charT>
+ constexpr explicit bitset(const charT* str,
+ typename basic_string_view<charT>::size_type n = basic_string_view<charT>::npos,
+ charT zero = charT('0'), charT one = charT('1')); // since C++26
+ template<class charT, class traits>
+ explicit bitset(
+ const basic_string_view<charT,traits>& str,
+ typename basic_string_view<charT,traits>::size_type pos = 0,
+ typename basic_string_view<charT,traits>::size_type n = basic_string_view<charT,traits>::npos,
+ charT zero = charT('0'), charT one = charT('1')); // since C++26
+ template<class charT, class traits, class Allocator>
+ constexpr explicit bitset(
+ const basic_string<charT,traits,Allocator>& str,
+ typename basic_string<charT,traits,Allocator>::size_type pos = 0,
+ typename basic_string<charT,traits,Allocator>::size_type n = basic_string<charT,traits,Allocator>::npos,
+ charT zero = charT('0'), charT one = charT('1')); // constexpr since C++23
+
+ // 23.3.5.2 bitset operations:
+ bitset& operator&=(const bitset& rhs) noexcept; // constexpr since C++23
+ bitset& operator|=(const bitset& rhs) noexcept; // constexpr since C++23
+ bitset& operator^=(const bitset& rhs) noexcept; // constexpr since C++23
+ bitset& operator<<=(size_t pos) noexcept; // constexpr since C++23
+ bitset& operator>>=(size_t pos) noexcept; // constexpr since C++23
+ bitset& set() noexcept; // constexpr since C++23
+ bitset& set(size_t pos, bool val = true); // constexpr since C++23
+ bitset& reset() noexcept; // constexpr since C++23
+ bitset& reset(size_t pos); // constexpr since C++23
+ bitset operator~() const noexcept; // constexpr since C++23
+ bitset& flip() noexcept; // constexpr since C++23
+ bitset& flip(size_t pos); // constexpr since C++23
+
+ // element access:
+ constexpr bool operator[](size_t pos) const;
+ reference operator[](size_t pos); // constexpr since C++23
+ unsigned long to_ulong() const; // constexpr since C++23
+ unsigned long long to_ullong() const; // constexpr since C++23
+ template <class charT, class traits, class Allocator> // constexpr since C++23
+ basic_string<charT, traits, Allocator> to_string(charT zero = charT('0'), charT one = charT('1')) const;
+ template <class charT, class traits> // constexpr since C++23
+ basic_string<charT, traits, allocator<charT> > to_string(charT zero = charT('0'), charT one = charT('1')) const;
+ template <class charT> // constexpr since C++23
+ basic_string<charT, char_traits<charT>, allocator<charT> > to_string(charT zero = charT('0'), charT one = charT('1')) const;
+ basic_string<char, char_traits<char>, allocator<char> > to_string(char zero = '0', char one = '1') const; // constexpr since C++23
+ size_t count() const noexcept; // constexpr since C++23
+ constexpr size_t size() const noexcept; // constexpr since C++23
+ bool operator==(const bitset& rhs) const noexcept; // constexpr since C++23
+ bool operator!=(const bitset& rhs) const noexcept; // removed in C++20
+ bool test(size_t pos) const; // constexpr since C++23
+ bool all() const noexcept; // constexpr since C++23
+ bool any() const noexcept; // constexpr since C++23
+ bool none() const noexcept; // constexpr since C++23
+ bitset<N> operator<<(size_t pos) const noexcept; // constexpr since C++23
+ bitset<N> operator>>(size_t pos) const noexcept; // constexpr since C++23
+};
+
+// 23.3.5.3 bitset operators:
+template <size_t N>
+bitset<N> operator&(const bitset<N>&, const bitset<N>&) noexcept; // constexpr since C++23
+
+template <size_t N>
+bitset<N> operator|(const bitset<N>&, const bitset<N>&) noexcept; // constexpr since C++23
+
+template <size_t N>
+bitset<N> operator^(const bitset<N>&, const bitset<N>&) noexcept; // constexpr since C++23
+
+template <class charT, class traits, size_t N>
+basic_istream<charT, traits>&
+operator>>(basic_istream<charT, traits>& is, bitset<N>& x);
+
+template <class charT, class traits, size_t N>
+basic_ostream<charT, traits>&
+operator<<(basic_ostream<charT, traits>& os, const bitset<N>& x);
+
+template <size_t N> struct hash<std::bitset<N>>;
+
+} // std
+
+*/
+
+// clang-format on
+
+#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
+# include <__cxx03/bitset>
+#else
+# include <__algorithm/copy.h>
+# include <__algorithm/copy_backward.h>
+# include <__algorithm/count.h>
+# include <__algorithm/equal.h>
+# include <__algorithm/fill.h>
+# include <__algorithm/fill_n.h>
+# include <__algorithm/find.h>
+# include <__algorithm/min.h>
+# include <__assert>
+# include <__bit/countr.h>
+# include <__bit/invert_if.h>
+# include <__bit_reference>
+# include <__config>
+# include <__cstddef/ptrdiff_t.h>
+# include <__cstddef/size_t.h>
+# include <__functional/hash.h>
+# include <__functional/identity.h>
+# include <__functional/unary_function.h>
+# include <__type_traits/enable_if.h>
+# include <__type_traits/integral_constant.h>
+# include <__type_traits/is_char_like_type.h>
+# include <__utility/integer_sequence.h>
+# include <climits>
+# include <stdexcept>
+# include <string_view>
+# include <version>
+
+// standard-mandated includes
+
+// [bitset.syn]
+# include <iosfwd>
+# include <string>
+
+# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+# endif
+
+_LIBCPP_PUSH_MACROS
+# include <__undef_macros>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <size_t _N_words, size_t _Size>
+class __bitset;
+
+template <size_t _N_words, size_t _Size>
+struct __has_storage_type<__bitset<_N_words, _Size> > {
+ static const bool value = true;
+};
+
+template <size_t _N_words, size_t _Size>
+class __bitset {
+public:
+ typedef size_t __storage_type;
+
+protected:
+ typedef __bitset __self;
+ typedef __storage_type* __storage_pointer;
+ typedef const __storage_type* __const_storage_pointer;
+ static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT);
+
+ friend class __bit_reference<__bitset>;
+ friend class __bit_const_reference<__bitset>;
+ friend class __bit_iterator<__bitset, false>;
+ friend class __bit_iterator<__bitset, true>;
+ friend struct __bit_array<__bitset>;
+
+ __storage_type __first_[_N_words];
+
+ typedef __bit_reference<__bitset> reference;
+ typedef __bit_const_reference<__bitset> __const_reference;
+ typedef __bit_iterator<__bitset, false> __iterator;
+ typedef __bit_iterator<__bitset, true> __const_iterator;
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT;
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 reference __make_ref(size_t __pos) _NOEXCEPT {
+ return reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word);
+ }
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __const_reference __make_ref(size_t __pos) const _NOEXCEPT {
+ return __const_reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word);
+ }
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 __iterator __make_iter(size_t __pos) _NOEXCEPT {
+ return __iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word);
+ }
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 __const_iterator __make_iter(size_t __pos) const _NOEXCEPT {
+ return __const_iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word);
+ }
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator&=(const __bitset& __v) _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator|=(const __bitset& __v) _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator^=(const __bitset& __v) _NOEXCEPT;
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void flip() _NOEXCEPT;
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong() const {
+ if _LIBCPP_CONSTEXPR (_Size > sizeof(unsigned long) * CHAR_BIT) {
+ if (auto __e = __make_iter(_Size); std::find(__make_iter(sizeof(unsigned long) * CHAR_BIT), __e, true) != __e)
+ std::__throw_overflow_error("__bitset<_N_words, _Size>::to_ulong overflow error");
+ }
+
+ static_assert(sizeof(__storage_type) >= sizeof(unsigned long),
+ "libc++ only supports platforms where sizeof(size_t) >= sizeof(unsigned long), such as 32-bit and "
+ "64-bit platforms. If you're interested in supporting a platform where that is not the case, please "
+ "contact the libc++ developers.");
+ return static_cast<unsigned long>(__first_[0]);
+ }
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong() const {
+ // Check for overflow if _Size does not fit in unsigned long long
+ if _LIBCPP_CONSTEXPR (_Size > sizeof(unsigned long long) * CHAR_BIT) {
+ if (auto __e = __make_iter(_Size);
+ std::find(__make_iter(sizeof(unsigned long long) * CHAR_BIT), __e, true) != __e)
+ std::__throw_overflow_error("__bitset<_N_words, _Size>::to_ullong overflow error");
+ }
+
+ // At this point, the effective bitset size (excluding leading zeros) fits in unsigned long long
+
+ if _LIBCPP_CONSTEXPR (sizeof(__storage_type) >= sizeof(unsigned long long)) {
+ // If __storage_type is at least as large as unsigned long long, the result spans only one word
+ return static_cast<unsigned long long>(__first_[0]);
+ } else {
+ // Otherwise, the result spans multiple words which are concatenated
+ const size_t __ull_words = (sizeof(unsigned long long) - 1) / sizeof(__storage_type) + 1;
+ const size_t __n_words = _N_words < __ull_words ? _N_words : __ull_words;
+ unsigned long long __r = static_cast<unsigned long long>(__first_[0]);
+ for (size_t __i = 1; __i < __n_words; ++__i)
+ __r |= static_cast<unsigned long long>(__first_[__i]) << (__bits_per_word * __i);
+ return __r;
+ }
+ }
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool all() const _NOEXCEPT { return !__scan_bits(__bit_not()); }
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool any() const _NOEXCEPT {
+ return __scan_bits(std::__identity());
+ }
+ _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT;
+
+ template <bool _Sparse, class _CharT, class _Traits, class _Allocator>
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, _Allocator>
+ __to_string(_CharT __zero, _CharT __one) const {
+ basic_string<_CharT, _Traits, _Allocator> __r(_Size, _Sparse ? __zero : __one);
+ for (size_t __i = 0, __bits = 0; __i < _N_words; ++__i, __bits += __bits_per_word) {
+ __storage_type __word = std::__invert_if<!_Sparse>(__first_[__i]);
+ if (__i == _N_words - 1 && _Size - __bits < __bits_per_word)
+ __word &= (__storage_type(1) << (_Size - __bits)) - 1;
+ for (; __word; __word &= (__word - 1))
+ __r[_Size - 1 - (__bits + std::__countr_zero(__word))] = _Sparse ? __one : __zero;
+ }
+
+ return __r;
+ }
+
+private:
+ struct __bit_not {
+ template <class _Tp>
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _Tp operator()(const _Tp& __x) const _NOEXCEPT {
+ return ~__x;
+ }
+ };
+
+ template <typename _Proj>
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool __scan_bits(_Proj __proj) const _NOEXCEPT {
+ size_t __n = _Size;
+ __const_storage_pointer __p = __first_;
+ // do middle whole words
+ for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word)
+ if (__proj(*__p))
+ return true;
+ // do last partial word
+ if (__n > 0) {
+ __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n);
+ if (__proj(*__p) & __m)
+ return true;
+ }
+ return false;
+ }
+
+# ifdef _LIBCPP_CXX03_LANG
+ void __init(unsigned long long __v, false_type) _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI void __init(unsigned long long __v, true_type) _NOEXCEPT;
+# else
+ template <size_t... _Indices>
+ _LIBCPP_HIDE_FROM_ABI constexpr __bitset(unsigned long long __v, __index_sequence<_Indices...>) _NOEXCEPT
+ : __first_{static_cast<__storage_type>(__v >> (_Indices * __bits_per_word))...} {}
+# endif // _LIBCPP_CXX03_LANG
+};
+
+template <size_t _N_words, size_t _Size>
+inline _LIBCPP_CONSTEXPR __bitset<_N_words, _Size>::__bitset() _NOEXCEPT
+# ifndef _LIBCPP_CXX03_LANG
+ : __first_{0}
+# endif
+{
+# ifdef _LIBCPP_CXX03_LANG
+ std::fill_n(__first_, _N_words, __storage_type(0));
+# endif
+}
+
+# ifdef _LIBCPP_CXX03_LANG
+
+template <size_t _N_words, size_t _Size>
+void __bitset<_N_words, _Size>::__init(unsigned long long __v, false_type) _NOEXCEPT {
+ const size_t __n_words = std::min((sizeof(unsigned long long) - 1) / sizeof(__storage_type) + 1, _N_words);
+ for (size_t __i = 0; __i < __n_words; ++__i, __v >>= __bits_per_word)
+ __first_[__i] = static_cast<__storage_type>(__v);
+ std::fill(__first_ + __n_words, __first_ + _N_words, __storage_type(0));
+}
+
+template <size_t _N_words, size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI void __bitset<_N_words, _Size>::__init(unsigned long long __v, true_type) _NOEXCEPT {
+ __first_[0] = __v;
+ std::fill(__first_ + 1, __first_ + _N_words, __storage_type(0));
+}
+
+# endif // _LIBCPP_CXX03_LANG
+
+template <size_t _N_words, size_t _Size>
+inline _LIBCPP_CONSTEXPR __bitset<_N_words, _Size>::__bitset(unsigned long long __v) _NOEXCEPT
+# ifndef _LIBCPP_CXX03_LANG
+ : __bitset(__v,
+ __make_index_sequence<(_N_words < (sizeof(unsigned long long) - 1) / sizeof(__storage_type) + 1)
+ ? _N_words
+ : (sizeof(unsigned long long) - 1) / sizeof(__storage_type) + 1>())
+# endif
+{
+# ifdef _LIBCPP_CXX03_LANG
+ __init(__v, _BoolConstant<sizeof(unsigned long long) <= sizeof(__storage_type)>());
+# endif
+}
+
+template <size_t _N_words, size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
+__bitset<_N_words, _Size>::operator&=(const __bitset& __v) _NOEXCEPT {
+ for (size_t __i = 0; __i < _N_words; ++__i)
+ __first_[__i] &= __v.__first_[__i];
+}
+
+template <size_t _N_words, size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
+__bitset<_N_words, _Size>::operator|=(const __bitset& __v) _NOEXCEPT {
+ for (size_t __i = 0; __i < _N_words; ++__i)
+ __first_[__i] |= __v.__first_[__i];
+}
+
+template <size_t _N_words, size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
+__bitset<_N_words, _Size>::operator^=(const __bitset& __v) _NOEXCEPT {
+ for (size_t __i = 0; __i < _N_words; ++__i)
+ __first_[__i] ^= __v.__first_[__i];
+}
+
+template <size_t _N_words, size_t _Size>
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void __bitset<_N_words, _Size>::flip() _NOEXCEPT {
+ // do middle whole words
+ size_t __n = _Size;
+ __storage_pointer __p = __first_;
+ for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word)
+ *__p = ~*__p;
+ // do last partial word
+ // Ensure trailing padding bits are zeroed as part of the ABI for consistent hashing behavior. std::hash<bitset>
+ // assumes trailing bits are zeroed; otherwise, identical bitsets could hash differently.
+ if (__n > 0)
+ *__p ^= (__storage_type(1) << __n) - 1;
+}
+
+template <size_t _N_words, size_t _Size>
+inline size_t __bitset<_N_words, _Size>::__hash_code() const _NOEXCEPT {
+ size_t __h = 0;
+ for (size_t __i = 0; __i < _N_words; ++__i)
+ __h ^= __first_[__i];
+ return __h;
+}
+
+template <size_t _Size>
+class __bitset<1, _Size> {
+public:
+ typedef size_t __storage_type;
+
+protected:
+ typedef __bitset __self;
+ typedef __storage_type* __storage_pointer;
+ typedef const __storage_type* __const_storage_pointer;
+ static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT);
+
+ friend class __bit_reference<__bitset>;
+ friend class __bit_const_reference<__bitset>;
+ friend class __bit_iterator<__bitset, false>;
+ friend class __bit_iterator<__bitset, true>;
+ friend struct __bit_array<__bitset>;
+
+ __storage_type __first_;
+
+ typedef __bit_reference<__bitset> reference;
+ typedef __bit_const_reference<__bitset> __const_reference;
+ typedef __bit_iterator<__bitset, false> __iterator;
+ typedef __bit_iterator<__bitset, true> __const_iterator;
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT;
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 reference __make_ref(size_t __pos) _NOEXCEPT {
+ return reference(&__first_, __storage_type(1) << __pos);
+ }
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __const_reference __make_ref(size_t __pos) const _NOEXCEPT {
+ return __const_reference(&__first_, __storage_type(1) << __pos);
+ }
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 __iterator __make_iter(size_t __pos) _NOEXCEPT {
+ // Allow the == case to accommodate the past-the-end iterator.
+ _LIBCPP_ASSERT_INTERNAL(__pos <= __bits_per_word, "Out of bounds access in the single-word bitset implementation.");
+ return __pos != __bits_per_word ? __iterator(&__first_, __pos) : __iterator(&__first_ + 1, 0);
+ }
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 __const_iterator __make_iter(size_t __pos) const _NOEXCEPT {
+ // Allow the == case to accommodate the past-the-end iterator.
+ _LIBCPP_ASSERT_INTERNAL(__pos <= __bits_per_word, "Out of bounds access in the single-word bitset implementation.");
+ return __pos != __bits_per_word ? __const_iterator(&__first_, __pos) : __const_iterator(&__first_ + 1, 0);
+ }
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator&=(const __bitset& __v) _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator|=(const __bitset& __v) _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator^=(const __bitset& __v) _NOEXCEPT;
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void flip() _NOEXCEPT;
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong() const {
+ if _LIBCPP_CONSTEXPR (_Size > sizeof(unsigned long) * CHAR_BIT) {
+ if (auto __e = __make_iter(_Size); std::find(__make_iter(sizeof(unsigned long) * CHAR_BIT), __e, true) != __e)
+ __throw_overflow_error("__bitset<1, _Size>::to_ulong overflow error");
+ }
+ return static_cast<unsigned long>(__first_);
+ }
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong() const {
+ // If _Size exceeds the size of unsigned long long, check for overflow
+ if _LIBCPP_CONSTEXPR (_Size > sizeof(unsigned long long) * CHAR_BIT) {
+ if (auto __e = __make_iter(_Size);
+ std::find(__make_iter(sizeof(unsigned long long) * CHAR_BIT), __e, true) != __e)
+ __throw_overflow_error("__bitset<1, _Size>::to_ullong overflow error");
+ }
+
+ // If _Size fits or no overflow, directly cast to unsigned long long
+ return static_cast<unsigned long long>(__first_);
+ }
+
+ template <bool _Sparse, class _CharT, class _Traits, class _Allocator>
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, _Allocator>
+ __to_string(_CharT __zero, _CharT __one) const {
+ basic_string<_CharT, _Traits, _Allocator> __r(_Size, _Sparse ? __zero : __one);
+ __storage_type __word = std::__invert_if<!_Sparse>(__first_);
+ if (_Size < __bits_per_word)
+ __word &= (__storage_type(1) << _Size) - 1;
+ for (; __word; __word &= (__word - 1)) {
+ size_t __pos = std::__countr_zero(__word);
+ __r[_Size - 1 - __pos] = _Sparse ? __one : __zero;
+ }
+ return __r;
+ }
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool all() const _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool any() const _NOEXCEPT;
+
+ _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT;
+};
+
+template <size_t _Size>
+inline _LIBCPP_CONSTEXPR __bitset<1, _Size>::__bitset() _NOEXCEPT : __first_(0) {}
+
+template <size_t _Size>
+inline _LIBCPP_CONSTEXPR __bitset<1, _Size>::__bitset(unsigned long long __v) _NOEXCEPT
+ // TODO: We must refer to __bits_per_word in order to work around an issue with the GDB pretty-printers.
+ // Without it, the pretty-printers complain about a missing __bits_per_word member. This needs to
+ // be investigated further.
+ : __first_(_Size == __bits_per_word ? static_cast<__storage_type>(__v) : static_cast<__storage_type>(__v)) {}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
+__bitset<1, _Size>::operator&=(const __bitset& __v) _NOEXCEPT {
+ __first_ &= __v.__first_;
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
+__bitset<1, _Size>::operator|=(const __bitset& __v) _NOEXCEPT {
+ __first_ |= __v.__first_;
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
+__bitset<1, _Size>::operator^=(const __bitset& __v) _NOEXCEPT {
+ __first_ ^= __v.__first_;
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void __bitset<1, _Size>::flip() _NOEXCEPT {
+ __first_ ^= ~__storage_type(0) >> (__bits_per_word - _Size);
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool __bitset<1, _Size>::all() const _NOEXCEPT {
+ __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size);
+ return !(~__first_ & __m);
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool __bitset<1, _Size>::any() const _NOEXCEPT {
+ __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size);
+ return __first_ & __m;
+}
+
+template <size_t _Size>
+inline size_t __bitset<1, _Size>::__hash_code() const _NOEXCEPT {
+ return __first_;
+}
+
+template <>
+class __bitset<0, 0> {
+public:
+ typedef size_t __storage_type;
+
+protected:
+ typedef __bitset __self;
+ typedef __storage_type* __storage_pointer;
+ typedef const __storage_type* __const_storage_pointer;
+ static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT);
+
+ friend class __bit_reference<__bitset>;
+ friend class __bit_const_reference<__bitset>;
+ friend class __bit_iterator<__bitset, false>;
+ friend class __bit_iterator<__bitset, true>;
+ friend struct __bit_array<__bitset>;
+
+ typedef __bit_reference<__bitset> reference;
+ typedef __bit_const_reference<__bitset> __const_reference;
+ typedef __bit_iterator<__bitset, false> __iterator;
+ typedef __bit_iterator<__bitset, true> __const_iterator;
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __bitset() _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long) _NOEXCEPT;
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 reference __make_ref(size_t) _NOEXCEPT {
+ return reference(nullptr, 1);
+ }
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __const_reference __make_ref(size_t) const _NOEXCEPT {
+ return __const_reference(nullptr, 1);
+ }
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 __iterator __make_iter(size_t) _NOEXCEPT {
+ return __iterator(nullptr, 0);
+ }
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 __const_iterator __make_iter(size_t) const _NOEXCEPT {
+ return __const_iterator(nullptr, 0);
+ }
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator&=(const __bitset&) _NOEXCEPT {}
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator|=(const __bitset&) _NOEXCEPT {}
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void operator^=(const __bitset&) _NOEXCEPT {}
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void flip() _NOEXCEPT {}
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong() const { return 0; }
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong() const { return 0; }
+
+ template <bool _Sparse, class _CharT, class _Traits, class _Allocator>
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, _Allocator>
+ __to_string(_CharT, _CharT) const {
+ return basic_string<_CharT, _Traits, _Allocator>();
+ }
+
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool all() const _NOEXCEPT { return true; }
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool any() const _NOEXCEPT { return false; }
+
+ _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT { return 0; }
+};
+
+inline _LIBCPP_CONSTEXPR __bitset<0, 0>::__bitset() _NOEXCEPT {}
+
+inline _LIBCPP_CONSTEXPR __bitset<0, 0>::__bitset(unsigned long long) _NOEXCEPT {}
+
+template <size_t _Size>
+class bitset;
+template <size_t _Size>
+struct hash<bitset<_Size> >;
+
+template <size_t _Size>
+class bitset : private __bitset<_Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1, _Size> {
+public:
+ static const unsigned __n_words = _Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1;
+ typedef __bitset<__n_words, _Size> __base;
+ typedef typename __base::reference reference;
+ typedef typename __base::__const_reference __const_reference;
+
+ // 23.3.5.1 constructors:
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bitset() _NOEXCEPT {}
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bitset(unsigned long long __v) _NOEXCEPT
+ : __base(sizeof(unsigned long long) * CHAR_BIT <= _Size ? __v : __v & ((1ULL << _Size) - 1)) {}
+ template <class _CharT, __enable_if_t<_IsCharLikeType<_CharT>::value, int> = 0>
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 explicit bitset(
+ const _CharT* __str,
+ size_t __n = basic_string<_CharT>::npos,
+ _CharT __zero = _CharT('0'),
+ _CharT __one = _CharT('1')) {
+ if (__n == basic_string<_CharT>::npos)
+ __init_from_string_view(basic_string_view<_CharT>(__str), __zero, __one);
+ else
+ __init_from_string_view(basic_string_view<_CharT>(__str, __n), __zero, __one);
+ }
+# if _LIBCPP_STD_VER >= 26
+ template <class _CharT, class _Traits>
+ _LIBCPP_HIDE_FROM_ABI constexpr explicit bitset(
+ basic_string_view<_CharT, _Traits> __str,
+ typename basic_string_view<_CharT, _Traits>::size_type __pos = 0,
+ typename basic_string_view<_CharT, _Traits>::size_type __n = basic_string_view<_CharT, _Traits>::npos,
+ _CharT __zero = _CharT('0'),
+ _CharT __one = _CharT('1')) {
+ if (__pos > __str.size())
+ std::__throw_out_of_range("bitset string pos out of range");
+
+ size_t __rlen = std::min(__n, __str.size() - __pos);
+ __init_from_string_view(basic_string_view<_CharT, _Traits>(__str.data() + __pos, __rlen), __zero, __one);
+ }
+# endif
+ template <class _CharT, class _Traits, class _Allocator>
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 explicit bitset(
+ const basic_string<_CharT, _Traits, _Allocator>& __str,
+ typename basic_string<_CharT, _Traits, _Allocator>::size_type __pos = 0,
+ typename basic_string<_CharT, _Traits, _Allocator>::size_type __n =
+ basic_string<_CharT, _Traits, _Allocator>::npos,
+ _CharT __zero = _CharT('0'),
+ _CharT __one = _CharT('1')) {
+ if (__pos > __str.size())
+ std::__throw_out_of_range("bitset string pos out of range");
+
+ size_t __rlen = std::min(__n, __str.size() - __pos);
+ __init_from_string_view(basic_string_view<_CharT, _Traits>(__str.data() + __pos, __rlen), __zero, __one);
+ }
+
+ // 23.3.5.2 bitset operations:
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& operator&=(const bitset& __rhs) _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& operator|=(const bitset& __rhs) _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& operator^=(const bitset& __rhs) _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& operator<<=(size_t __pos) _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& operator>>=(size_t __pos) _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& set() _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& set(size_t __pos, bool __val = true);
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& reset() _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& reset(size_t __pos);
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset operator~() const _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& flip() _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset& flip(size_t __pos);
+
+ // element access:
+ // TODO(LLVM 24): Remove the opt-out
+# ifndef _LIBCPP_DEPRECATED_ABI_BITSET_CONST_SUBSCRIPT_RETURN_REF
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool operator[](size_t __p) const {
+ _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__p < _Size, "bitset::operator[] index out of bounds");
+ return __base::__make_ref(__p);
+ }
+# else
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __const_reference operator[](size_t __p) const {
+ _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__p < _Size, "bitset::operator[] index out of bounds");
+ return __base::__make_ref(__p);
+ }
+# endif
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 reference operator[](size_t __p) {
+ _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__p < _Size, "bitset::operator[] index out of bounds");
+ return __base::__make_ref(__p);
+ }
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong() const {
+ return __base::to_ulong();
+ }
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long to_ullong() const {
+ return __base::to_ullong();
+ }
+ template <class _CharT, class _Traits, class _Allocator>
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, _Allocator>
+ to_string(_CharT __zero = _CharT('0'), _CharT __one = _CharT('1')) const;
+ template <class _CharT, class _Traits>
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI
+ _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, allocator<_CharT> >
+ to_string(_CharT __zero = _CharT('0'), _CharT __one = _CharT('1')) const;
+ template <class _CharT>
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI
+ _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> >
+ to_string(_CharT __zero = _CharT('0'), _CharT __one = _CharT('1')) const;
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI
+ _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<char, char_traits<char>, allocator<char> >
+ to_string(char __zero = '0', char __one = '1') const;
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 size_t count() const _NOEXCEPT;
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR size_t size() const _NOEXCEPT { return _Size; }
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool operator==(const bitset& __rhs) const _NOEXCEPT;
+# if _LIBCPP_STD_VER <= 17
+ _LIBCPP_HIDE_FROM_ABI bool operator!=(const bitset& __rhs) const _NOEXCEPT;
+# endif
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool test(size_t __pos) const;
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool all() const _NOEXCEPT {
+ return __base::all();
+ }
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool any() const _NOEXCEPT {
+ return __base::any();
+ }
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool none() const _NOEXCEPT { return !any(); }
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset operator<<(size_t __pos) const _NOEXCEPT;
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset operator>>(size_t __pos) const _NOEXCEPT;
+
+private:
+ template <class _CharT, class _Traits>
+ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 void
+ __init_from_string_view(basic_string_view<_CharT, _Traits> __str, _CharT __zero, _CharT __one) {
+ for (size_t __i = 0; __i < __str.size(); ++__i)
+ if (!_Traits::eq(__str[__i], __zero) && !_Traits::eq(__str[__i], __one))
+ std::__throw_invalid_argument("bitset string ctor has invalid argument");
+
+ size_t __mp = std::min(__str.size(), _Size);
+ size_t __i = 0;
+ for (; __i < __mp; ++__i) {
+ _CharT __c = __str[__mp - 1 - __i];
+ (*this)[__i] = _Traits::eq(__c, __one);
+ }
+ }
+
+ _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT { return __base::__hash_code(); }
+
+ friend struct hash<bitset>;
+};
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>&
+bitset<_Size>::operator&=(const bitset& __rhs) _NOEXCEPT {
+ __base::operator&=(__rhs);
+ return *this;
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>&
+bitset<_Size>::operator|=(const bitset& __rhs) _NOEXCEPT {
+ __base::operator|=(__rhs);
+ return *this;
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>&
+bitset<_Size>::operator^=(const bitset& __rhs) _NOEXCEPT {
+ __base::operator^=(__rhs);
+ return *this;
+}
+
+template <size_t _Size>
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::operator<<=(size_t __pos) _NOEXCEPT {
+ __pos = std::min(__pos, _Size);
+ std::copy_backward(__base::__make_iter(0), __base::__make_iter(_Size - __pos), __base::__make_iter(_Size));
+ std::fill_n(__base::__make_iter(0), __pos, false);
+ return *this;
+}
+
+template <size_t _Size>
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::operator>>=(size_t __pos) _NOEXCEPT {
+ __pos = std::min(__pos, _Size);
+ std::copy(__base::__make_iter(__pos), __base::__make_iter(_Size), __base::__make_iter(0));
+ std::fill_n(__base::__make_iter(_Size - __pos), __pos, false);
+ return *this;
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::set() _NOEXCEPT {
+ std::fill_n(__base::__make_iter(0), _Size, true);
+ return *this;
+}
+
+template <size_t _Size>
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::set(size_t __pos, bool __val) {
+ if (__pos >= _Size)
+ std::__throw_out_of_range("bitset set argument out of range");
+
+ (*this)[__pos] = __val;
+ return *this;
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::reset() _NOEXCEPT {
+ std::fill_n(__base::__make_iter(0), _Size, false);
+ return *this;
+}
+
+template <size_t _Size>
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::reset(size_t __pos) {
+ if (__pos >= _Size)
+ std::__throw_out_of_range("bitset reset argument out of range");
+
+ (*this)[__pos] = false;
+ return *this;
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size> bitset<_Size>::operator~() const _NOEXCEPT {
+ bitset __x(*this);
+ __x.flip();
+ return __x;
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::flip() _NOEXCEPT {
+ __base::flip();
+ return *this;
+}
+
+template <size_t _Size>
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>& bitset<_Size>::flip(size_t __pos) {
+ if (__pos >= _Size)
+ std::__throw_out_of_range("bitset flip argument out of range");
+
+ reference __r = __base::__make_ref(__pos);
+ __r = ~__r;
+ return *this;
+}
+
+template <size_t _Size>
+template <class _CharT, class _Traits, class _Allocator>
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, _Allocator>
+bitset<_Size>::to_string(_CharT __zero, _CharT __one) const {
+ bool __sparse = size_t(std::count(__base::__make_iter(0), __base::__make_iter(_Size), true)) < _Size / 2;
+ if (__sparse)
+ return __base::template __to_string<true, _CharT, _Traits, _Allocator>(__zero, __one);
+ else
+ return __base::template __to_string<false, _CharT, _Traits, _Allocator>(__zero, __one);
+}
+
+template <size_t _Size>
+template <class _CharT, class _Traits>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, _Traits, allocator<_CharT> >
+bitset<_Size>::to_string(_CharT __zero, _CharT __one) const {
+ return to_string<_CharT, _Traits, allocator<_CharT> >(__zero, __one);
+}
+
+template <size_t _Size>
+template <class _CharT>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> >
+bitset<_Size>::to_string(_CharT __zero, _CharT __one) const {
+ return to_string<_CharT, char_traits<_CharT>, allocator<_CharT> >(__zero, __one);
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 basic_string<char, char_traits<char>, allocator<char> >
+bitset<_Size>::to_string(char __zero, char __one) const {
+ return to_string<char, char_traits<char>, allocator<char> >(__zero, __one);
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 size_t bitset<_Size>::count() const _NOEXCEPT {
+# if defined(_LIBCPP_COMPILER_CLANG_BASED) && !defined(_LIBCPP_CXX03_LANG)
+ if constexpr (_Size == 0) {
+ return 0;
+ } else if constexpr (_Size <= __base::__bits_per_word) {
+ return __builtin_popcountg(static_cast<unsigned _BitInt(_Size)>(__base::__first_));
+ } else
+# endif
+ {
+ return static_cast<size_t>(std::count(__base::__make_iter(0), __base::__make_iter(_Size), true));
+ }
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool
+bitset<_Size>::operator==(const bitset& __rhs) const _NOEXCEPT {
+ return std::equal(__base::__make_iter(0), __base::__make_iter(_Size), __rhs.__make_iter(0));
+}
+
+# if _LIBCPP_STD_VER <= 17
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI bool bitset<_Size>::operator!=(const bitset& __rhs) const _NOEXCEPT {
+ return !(*this == __rhs);
+}
+
+# endif
+
+template <size_t _Size>
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool bitset<_Size>::test(size_t __pos) const {
+ if (__pos >= _Size)
+ std::__throw_out_of_range("bitset test argument out of range");
+
+ return (*this)[__pos];
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
+bitset<_Size>::operator<<(size_t __pos) const _NOEXCEPT {
+ bitset __r = *this;
+ __r <<= __pos;
+ return __r;
+}
+
+template <size_t _Size>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
+bitset<_Size>::operator>>(size_t __pos) const _NOEXCEPT {
+ bitset __r = *this;
+ __r >>= __pos;
+ return __r;
+}
+
+template <size_t _Size>
+[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
+operator&(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT {
+ bitset<_Size> __r = __x;
+ __r &= __y;
+ return __r;
+}
+
+template <size_t _Size>
+[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
+operator|(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT {
+ bitset<_Size> __r = __x;
+ __r |= __y;
+ return __r;
+}
+
+template <size_t _Size>
+[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset<_Size>
+operator^(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT {
+ bitset<_Size> __r = __x;
+ __r ^= __y;
+ return __r;
+}
+
+template <size_t _Size>
+struct hash<bitset<_Size> > : public __unary_function<bitset<_Size>, size_t> {
+ [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI size_t operator()(const bitset<_Size>& __bs) const _NOEXCEPT {
+ return __bs.__hash_code();
+ }
+};
+
+template <class _CharT, class _Traits, size_t _Size>
+_LIBCPP_HIDE_FROM_ABI basic_istream<_CharT, _Traits>&
+operator>>(basic_istream<_CharT, _Traits>& __is, bitset<_Size>& __x);
+
+template <class _CharT, class _Traits, size_t _Size>
+_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>&
+operator<<(basic_ostream<_CharT, _Traits>& __os, const bitset<_Size>& __x);
+
+_LIBCPP_END_NAMESPACE_STD
+
+_LIBCPP_POP_MACROS
+
+# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
+# include <concepts>
+# include <cstdlib>
+# include <optional>
+# include <type_traits>
+# endif
+#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
+
+#endif // _LIBCPP_BITSET
generated by cgit v1.2.3 (git 2.46.0) at 2026-10-29 15:49:46 +0000