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llvm-project/libcxx/include/bitset
Nikolas Klauser 6c257754d9
[libc++] Refactor internal index_sequence API to match the public one (#149475) 
The internal API is a lot more complicated than it actually needs to be.
This refactors the internal API to match the features and names of the
public one.
2025-07-20 11:23:31 +02:00

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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);
_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:
# ifdef _LIBCPP_ABI_BITSET_VECTOR_BOOL_CONST_SUBSCRIPT_RETURN_BOOL
_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
_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
_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);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long to_ulong() const { return __base::to_ulong(); }
_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>
_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>
_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>
_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;
_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;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 size_t count() const _NOEXCEPT;
_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
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool test(size_t __pos) const;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool all() const _NOEXCEPT { return __base::all(); }
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool any() const _NOEXCEPT { return __base::any(); }
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bool none() const _NOEXCEPT { return !any(); }
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 bitset operator<<(size_t __pos) const _NOEXCEPT;
_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 {
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>
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>
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>
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> {
_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
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