10b57cec5SDimitry Andric// -*- C++ -*- 20b57cec5SDimitry Andric//===----------------------------------------------------------------------===// 30b57cec5SDimitry Andric// 40b57cec5SDimitry Andric// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 50b57cec5SDimitry Andric// See https://llvm.org/LICENSE.txt for license information. 60b57cec5SDimitry Andric// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 70b57cec5SDimitry Andric// 80b57cec5SDimitry Andric//===----------------------------------------------------------------------===// 90b57cec5SDimitry Andric 100b57cec5SDimitry Andric#ifndef _LIBCPP___BIT_REFERENCE 110b57cec5SDimitry Andric#define _LIBCPP___BIT_REFERENCE 120b57cec5SDimitry Andric 13*81ad6265SDimitry Andric#include <__algorithm/min.h> 14e8d8bef9SDimitry Andric#include <__bits> 1504eeddc0SDimitry Andric#include <__config> 16*81ad6265SDimitry Andric#include <__iterator/iterator_traits.h> 17*81ad6265SDimitry Andric#include <__memory/pointer_traits.h> 18*81ad6265SDimitry Andric#include <cstring> 19*81ad6265SDimitry Andric#include <type_traits> 200b57cec5SDimitry Andric 210b57cec5SDimitry Andric#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 220b57cec5SDimitry Andric# pragma GCC system_header 230b57cec5SDimitry Andric#endif 240b57cec5SDimitry Andric 250b57cec5SDimitry Andric_LIBCPP_PUSH_MACROS 260b57cec5SDimitry Andric#include <__undef_macros> 270b57cec5SDimitry Andric 280b57cec5SDimitry Andric 290b57cec5SDimitry Andric_LIBCPP_BEGIN_NAMESPACE_STD 300b57cec5SDimitry Andric 310b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst, typename _Cp::__storage_type = 0> class __bit_iterator; 320b57cec5SDimitry Andrictemplate <class _Cp> class __bit_const_reference; 330b57cec5SDimitry Andric 340b57cec5SDimitry Andrictemplate <class _Tp> 350b57cec5SDimitry Andricstruct __has_storage_type 360b57cec5SDimitry Andric{ 370b57cec5SDimitry Andric static const bool value = false; 380b57cec5SDimitry Andric}; 390b57cec5SDimitry Andric 400b57cec5SDimitry Andrictemplate <class _Cp, bool = __has_storage_type<_Cp>::value> 410b57cec5SDimitry Andricclass __bit_reference 420b57cec5SDimitry Andric{ 430b57cec5SDimitry Andric typedef typename _Cp::__storage_type __storage_type; 440b57cec5SDimitry Andric typedef typename _Cp::__storage_pointer __storage_pointer; 450b57cec5SDimitry Andric 460b57cec5SDimitry Andric __storage_pointer __seg_; 470b57cec5SDimitry Andric __storage_type __mask_; 480b57cec5SDimitry Andric 490b57cec5SDimitry Andric friend typename _Cp::__self; 500b57cec5SDimitry Andric 510b57cec5SDimitry Andric friend class __bit_const_reference<_Cp>; 520b57cec5SDimitry Andric friend class __bit_iterator<_Cp, false>; 530b57cec5SDimitry Andricpublic: 54480093f4SDimitry Andric _LIBCPP_INLINE_VISIBILITY 55480093f4SDimitry Andric __bit_reference(const __bit_reference&) = default; 56480093f4SDimitry Andric 570b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY operator bool() const _NOEXCEPT 580b57cec5SDimitry Andric {return static_cast<bool>(*__seg_ & __mask_);} 590b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY bool operator ~() const _NOEXCEPT 600b57cec5SDimitry Andric {return !static_cast<bool>(*this);} 610b57cec5SDimitry Andric 620b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY 630b57cec5SDimitry Andric __bit_reference& operator=(bool __x) _NOEXCEPT 640b57cec5SDimitry Andric { 650b57cec5SDimitry Andric if (__x) 660b57cec5SDimitry Andric *__seg_ |= __mask_; 670b57cec5SDimitry Andric else 680b57cec5SDimitry Andric *__seg_ &= ~__mask_; 690b57cec5SDimitry Andric return *this; 700b57cec5SDimitry Andric } 710b57cec5SDimitry Andric 72*81ad6265SDimitry Andric#if _LIBCPP_STD_VER > 20 73*81ad6265SDimitry Andric _LIBCPP_HIDE_FROM_ABI const __bit_reference& operator=(bool __x) const noexcept { 74*81ad6265SDimitry Andric if (__x) 75*81ad6265SDimitry Andric *__seg_ |= __mask_; 76*81ad6265SDimitry Andric else 77*81ad6265SDimitry Andric *__seg_ &= ~__mask_; 78*81ad6265SDimitry Andric return *this; 79*81ad6265SDimitry Andric } 80*81ad6265SDimitry Andric#endif 81*81ad6265SDimitry Andric 820b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY 830b57cec5SDimitry Andric __bit_reference& operator=(const __bit_reference& __x) _NOEXCEPT 840b57cec5SDimitry Andric {return operator=(static_cast<bool>(__x));} 850b57cec5SDimitry Andric 860b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY void flip() _NOEXCEPT {*__seg_ ^= __mask_;} 870b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY __bit_iterator<_Cp, false> operator&() const _NOEXCEPT 880b57cec5SDimitry Andric {return __bit_iterator<_Cp, false>(__seg_, static_cast<unsigned>(__libcpp_ctz(__mask_)));} 890b57cec5SDimitry Andricprivate: 900b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY 91*81ad6265SDimitry Andric explicit __bit_reference(__storage_pointer __s, __storage_type __m) _NOEXCEPT 920b57cec5SDimitry Andric : __seg_(__s), __mask_(__m) {} 930b57cec5SDimitry Andric}; 940b57cec5SDimitry Andric 950b57cec5SDimitry Andrictemplate <class _Cp> 960b57cec5SDimitry Andricclass __bit_reference<_Cp, false> 970b57cec5SDimitry Andric{ 980b57cec5SDimitry Andric}; 990b57cec5SDimitry Andric 1000b57cec5SDimitry Andrictemplate <class _Cp> 1010b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 1020b57cec5SDimitry Andricvoid 1030b57cec5SDimitry Andricswap(__bit_reference<_Cp> __x, __bit_reference<_Cp> __y) _NOEXCEPT 1040b57cec5SDimitry Andric{ 1050b57cec5SDimitry Andric bool __t = __x; 1060b57cec5SDimitry Andric __x = __y; 1070b57cec5SDimitry Andric __y = __t; 1080b57cec5SDimitry Andric} 1090b57cec5SDimitry Andric 1100b57cec5SDimitry Andrictemplate <class _Cp, class _Dp> 1110b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 1120b57cec5SDimitry Andricvoid 1130b57cec5SDimitry Andricswap(__bit_reference<_Cp> __x, __bit_reference<_Dp> __y) _NOEXCEPT 1140b57cec5SDimitry Andric{ 1150b57cec5SDimitry Andric bool __t = __x; 1160b57cec5SDimitry Andric __x = __y; 1170b57cec5SDimitry Andric __y = __t; 1180b57cec5SDimitry Andric} 1190b57cec5SDimitry Andric 1200b57cec5SDimitry Andrictemplate <class _Cp> 1210b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 1220b57cec5SDimitry Andricvoid 1230b57cec5SDimitry Andricswap(__bit_reference<_Cp> __x, bool& __y) _NOEXCEPT 1240b57cec5SDimitry Andric{ 1250b57cec5SDimitry Andric bool __t = __x; 1260b57cec5SDimitry Andric __x = __y; 1270b57cec5SDimitry Andric __y = __t; 1280b57cec5SDimitry Andric} 1290b57cec5SDimitry Andric 1300b57cec5SDimitry Andrictemplate <class _Cp> 1310b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 1320b57cec5SDimitry Andricvoid 1330b57cec5SDimitry Andricswap(bool& __x, __bit_reference<_Cp> __y) _NOEXCEPT 1340b57cec5SDimitry Andric{ 1350b57cec5SDimitry Andric bool __t = __x; 1360b57cec5SDimitry Andric __x = __y; 1370b57cec5SDimitry Andric __y = __t; 1380b57cec5SDimitry Andric} 1390b57cec5SDimitry Andric 1400b57cec5SDimitry Andrictemplate <class _Cp> 1410b57cec5SDimitry Andricclass __bit_const_reference 1420b57cec5SDimitry Andric{ 1430b57cec5SDimitry Andric typedef typename _Cp::__storage_type __storage_type; 1440b57cec5SDimitry Andric typedef typename _Cp::__const_storage_pointer __storage_pointer; 1450b57cec5SDimitry Andric 1460b57cec5SDimitry Andric __storage_pointer __seg_; 1470b57cec5SDimitry Andric __storage_type __mask_; 1480b57cec5SDimitry Andric 1490b57cec5SDimitry Andric friend typename _Cp::__self; 1500b57cec5SDimitry Andric friend class __bit_iterator<_Cp, true>; 1510b57cec5SDimitry Andricpublic: 1520b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY 153480093f4SDimitry Andric __bit_const_reference(const __bit_const_reference&) = default; 154480093f4SDimitry Andric 155480093f4SDimitry Andric _LIBCPP_INLINE_VISIBILITY 1560b57cec5SDimitry Andric __bit_const_reference(const __bit_reference<_Cp>& __x) _NOEXCEPT 1570b57cec5SDimitry Andric : __seg_(__x.__seg_), __mask_(__x.__mask_) {} 1580b57cec5SDimitry Andric 1590b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR operator bool() const _NOEXCEPT 1600b57cec5SDimitry Andric {return static_cast<bool>(*__seg_ & __mask_);} 1610b57cec5SDimitry Andric 1620b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY __bit_iterator<_Cp, true> operator&() const _NOEXCEPT 1630b57cec5SDimitry Andric {return __bit_iterator<_Cp, true>(__seg_, static_cast<unsigned>(__libcpp_ctz(__mask_)));} 1640b57cec5SDimitry Andricprivate: 1650b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY 1660b57cec5SDimitry Andric _LIBCPP_CONSTEXPR 167*81ad6265SDimitry Andric explicit __bit_const_reference(__storage_pointer __s, __storage_type __m) _NOEXCEPT 1680b57cec5SDimitry Andric : __seg_(__s), __mask_(__m) {} 1690b57cec5SDimitry Andric 170480093f4SDimitry Andric __bit_const_reference& operator=(const __bit_const_reference&) = delete; 1710b57cec5SDimitry Andric}; 1720b57cec5SDimitry Andric 1730b57cec5SDimitry Andric// find 1740b57cec5SDimitry Andric 1750b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst> 1760b57cec5SDimitry Andric__bit_iterator<_Cp, _IsConst> 1770b57cec5SDimitry Andric__find_bool_true(__bit_iterator<_Cp, _IsConst> __first, typename _Cp::size_type __n) 1780b57cec5SDimitry Andric{ 1790b57cec5SDimitry Andric typedef __bit_iterator<_Cp, _IsConst> _It; 1800b57cec5SDimitry Andric typedef typename _It::__storage_type __storage_type; 1810b57cec5SDimitry Andric static const int __bits_per_word = _It::__bits_per_word; 1820b57cec5SDimitry Andric // do first partial word 1830b57cec5SDimitry Andric if (__first.__ctz_ != 0) 1840b57cec5SDimitry Andric { 1850b57cec5SDimitry Andric __storage_type __clz_f = static_cast<__storage_type>(__bits_per_word - __first.__ctz_); 1860b57cec5SDimitry Andric __storage_type __dn = _VSTD::min(__clz_f, __n); 1870b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); 1880b57cec5SDimitry Andric __storage_type __b = *__first.__seg_ & __m; 1890b57cec5SDimitry Andric if (__b) 1900b57cec5SDimitry Andric return _It(__first.__seg_, static_cast<unsigned>(_VSTD::__libcpp_ctz(__b))); 1910b57cec5SDimitry Andric if (__n == __dn) 1920b57cec5SDimitry Andric return __first + __n; 1930b57cec5SDimitry Andric __n -= __dn; 1940b57cec5SDimitry Andric ++__first.__seg_; 1950b57cec5SDimitry Andric } 1960b57cec5SDimitry Andric // do middle whole words 1970b57cec5SDimitry Andric for (; __n >= __bits_per_word; ++__first.__seg_, __n -= __bits_per_word) 1980b57cec5SDimitry Andric if (*__first.__seg_) 1990b57cec5SDimitry Andric return _It(__first.__seg_, static_cast<unsigned>(_VSTD::__libcpp_ctz(*__first.__seg_))); 2000b57cec5SDimitry Andric // do last partial word 2010b57cec5SDimitry Andric if (__n > 0) 2020b57cec5SDimitry Andric { 2030b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 2040b57cec5SDimitry Andric __storage_type __b = *__first.__seg_ & __m; 2050b57cec5SDimitry Andric if (__b) 2060b57cec5SDimitry Andric return _It(__first.__seg_, static_cast<unsigned>(_VSTD::__libcpp_ctz(__b))); 2070b57cec5SDimitry Andric } 2080b57cec5SDimitry Andric return _It(__first.__seg_, static_cast<unsigned>(__n)); 2090b57cec5SDimitry Andric} 2100b57cec5SDimitry Andric 2110b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst> 2120b57cec5SDimitry Andric__bit_iterator<_Cp, _IsConst> 2130b57cec5SDimitry Andric__find_bool_false(__bit_iterator<_Cp, _IsConst> __first, typename _Cp::size_type __n) 2140b57cec5SDimitry Andric{ 2150b57cec5SDimitry Andric typedef __bit_iterator<_Cp, _IsConst> _It; 2160b57cec5SDimitry Andric typedef typename _It::__storage_type __storage_type; 2170b57cec5SDimitry Andric const int __bits_per_word = _It::__bits_per_word; 2180b57cec5SDimitry Andric // do first partial word 2190b57cec5SDimitry Andric if (__first.__ctz_ != 0) 2200b57cec5SDimitry Andric { 2210b57cec5SDimitry Andric __storage_type __clz_f = static_cast<__storage_type>(__bits_per_word - __first.__ctz_); 2220b57cec5SDimitry Andric __storage_type __dn = _VSTD::min(__clz_f, __n); 2230b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); 2240b57cec5SDimitry Andric __storage_type __b = ~*__first.__seg_ & __m; 2250b57cec5SDimitry Andric if (__b) 2260b57cec5SDimitry Andric return _It(__first.__seg_, static_cast<unsigned>(_VSTD::__libcpp_ctz(__b))); 2270b57cec5SDimitry Andric if (__n == __dn) 2280b57cec5SDimitry Andric return __first + __n; 2290b57cec5SDimitry Andric __n -= __dn; 2300b57cec5SDimitry Andric ++__first.__seg_; 2310b57cec5SDimitry Andric } 2320b57cec5SDimitry Andric // do middle whole words 2330b57cec5SDimitry Andric for (; __n >= __bits_per_word; ++__first.__seg_, __n -= __bits_per_word) 2340b57cec5SDimitry Andric { 2350b57cec5SDimitry Andric __storage_type __b = ~*__first.__seg_; 2360b57cec5SDimitry Andric if (__b) 2370b57cec5SDimitry Andric return _It(__first.__seg_, static_cast<unsigned>(_VSTD::__libcpp_ctz(__b))); 2380b57cec5SDimitry Andric } 2390b57cec5SDimitry Andric // do last partial word 2400b57cec5SDimitry Andric if (__n > 0) 2410b57cec5SDimitry Andric { 2420b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 2430b57cec5SDimitry Andric __storage_type __b = ~*__first.__seg_ & __m; 2440b57cec5SDimitry Andric if (__b) 2450b57cec5SDimitry Andric return _It(__first.__seg_, static_cast<unsigned>(_VSTD::__libcpp_ctz(__b))); 2460b57cec5SDimitry Andric } 2470b57cec5SDimitry Andric return _It(__first.__seg_, static_cast<unsigned>(__n)); 2480b57cec5SDimitry Andric} 2490b57cec5SDimitry Andric 2500b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst, class _Tp> 2510b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 2520b57cec5SDimitry Andric__bit_iterator<_Cp, _IsConst> 2530b57cec5SDimitry Andricfind(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, const _Tp& __value_) 2540b57cec5SDimitry Andric{ 2550b57cec5SDimitry Andric if (static_cast<bool>(__value_)) 256e8d8bef9SDimitry Andric return _VSTD::__find_bool_true(__first, static_cast<typename _Cp::size_type>(__last - __first)); 257e8d8bef9SDimitry Andric return _VSTD::__find_bool_false(__first, static_cast<typename _Cp::size_type>(__last - __first)); 2580b57cec5SDimitry Andric} 2590b57cec5SDimitry Andric 2600b57cec5SDimitry Andric// count 2610b57cec5SDimitry Andric 2620b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst> 2630b57cec5SDimitry Andrictypename __bit_iterator<_Cp, _IsConst>::difference_type 2640b57cec5SDimitry Andric__count_bool_true(__bit_iterator<_Cp, _IsConst> __first, typename _Cp::size_type __n) 2650b57cec5SDimitry Andric{ 2660b57cec5SDimitry Andric typedef __bit_iterator<_Cp, _IsConst> _It; 2670b57cec5SDimitry Andric typedef typename _It::__storage_type __storage_type; 2680b57cec5SDimitry Andric typedef typename _It::difference_type difference_type; 2690b57cec5SDimitry Andric const int __bits_per_word = _It::__bits_per_word; 2700b57cec5SDimitry Andric difference_type __r = 0; 2710b57cec5SDimitry Andric // do first partial word 2720b57cec5SDimitry Andric if (__first.__ctz_ != 0) 2730b57cec5SDimitry Andric { 2740b57cec5SDimitry Andric __storage_type __clz_f = static_cast<__storage_type>(__bits_per_word - __first.__ctz_); 2750b57cec5SDimitry Andric __storage_type __dn = _VSTD::min(__clz_f, __n); 2760b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); 2770b57cec5SDimitry Andric __r = _VSTD::__libcpp_popcount(*__first.__seg_ & __m); 2780b57cec5SDimitry Andric __n -= __dn; 2790b57cec5SDimitry Andric ++__first.__seg_; 2800b57cec5SDimitry Andric } 2810b57cec5SDimitry Andric // do middle whole words 2820b57cec5SDimitry Andric for (; __n >= __bits_per_word; ++__first.__seg_, __n -= __bits_per_word) 2830b57cec5SDimitry Andric __r += _VSTD::__libcpp_popcount(*__first.__seg_); 2840b57cec5SDimitry Andric // do last partial word 2850b57cec5SDimitry Andric if (__n > 0) 2860b57cec5SDimitry Andric { 2870b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 2880b57cec5SDimitry Andric __r += _VSTD::__libcpp_popcount(*__first.__seg_ & __m); 2890b57cec5SDimitry Andric } 2900b57cec5SDimitry Andric return __r; 2910b57cec5SDimitry Andric} 2920b57cec5SDimitry Andric 2930b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst> 2940b57cec5SDimitry Andrictypename __bit_iterator<_Cp, _IsConst>::difference_type 2950b57cec5SDimitry Andric__count_bool_false(__bit_iterator<_Cp, _IsConst> __first, typename _Cp::size_type __n) 2960b57cec5SDimitry Andric{ 2970b57cec5SDimitry Andric typedef __bit_iterator<_Cp, _IsConst> _It; 2980b57cec5SDimitry Andric typedef typename _It::__storage_type __storage_type; 2990b57cec5SDimitry Andric typedef typename _It::difference_type difference_type; 3000b57cec5SDimitry Andric const int __bits_per_word = _It::__bits_per_word; 3010b57cec5SDimitry Andric difference_type __r = 0; 3020b57cec5SDimitry Andric // do first partial word 3030b57cec5SDimitry Andric if (__first.__ctz_ != 0) 3040b57cec5SDimitry Andric { 3050b57cec5SDimitry Andric __storage_type __clz_f = static_cast<__storage_type>(__bits_per_word - __first.__ctz_); 3060b57cec5SDimitry Andric __storage_type __dn = _VSTD::min(__clz_f, __n); 3070b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); 3080b57cec5SDimitry Andric __r = _VSTD::__libcpp_popcount(~*__first.__seg_ & __m); 3090b57cec5SDimitry Andric __n -= __dn; 3100b57cec5SDimitry Andric ++__first.__seg_; 3110b57cec5SDimitry Andric } 3120b57cec5SDimitry Andric // do middle whole words 3130b57cec5SDimitry Andric for (; __n >= __bits_per_word; ++__first.__seg_, __n -= __bits_per_word) 3140b57cec5SDimitry Andric __r += _VSTD::__libcpp_popcount(~*__first.__seg_); 3150b57cec5SDimitry Andric // do last partial word 3160b57cec5SDimitry Andric if (__n > 0) 3170b57cec5SDimitry Andric { 3180b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 3190b57cec5SDimitry Andric __r += _VSTD::__libcpp_popcount(~*__first.__seg_ & __m); 3200b57cec5SDimitry Andric } 3210b57cec5SDimitry Andric return __r; 3220b57cec5SDimitry Andric} 3230b57cec5SDimitry Andric 3240b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst, class _Tp> 3250b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 3260b57cec5SDimitry Andrictypename __bit_iterator<_Cp, _IsConst>::difference_type 3270b57cec5SDimitry Andriccount(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, const _Tp& __value_) 3280b57cec5SDimitry Andric{ 3290b57cec5SDimitry Andric if (static_cast<bool>(__value_)) 330e8d8bef9SDimitry Andric return _VSTD::__count_bool_true(__first, static_cast<typename _Cp::size_type>(__last - __first)); 331e8d8bef9SDimitry Andric return _VSTD::__count_bool_false(__first, static_cast<typename _Cp::size_type>(__last - __first)); 3320b57cec5SDimitry Andric} 3330b57cec5SDimitry Andric 3340b57cec5SDimitry Andric// fill_n 3350b57cec5SDimitry Andric 3360b57cec5SDimitry Andrictemplate <class _Cp> 3370b57cec5SDimitry Andricvoid 3380b57cec5SDimitry Andric__fill_n_false(__bit_iterator<_Cp, false> __first, typename _Cp::size_type __n) 3390b57cec5SDimitry Andric{ 3400b57cec5SDimitry Andric typedef __bit_iterator<_Cp, false> _It; 3410b57cec5SDimitry Andric typedef typename _It::__storage_type __storage_type; 3420b57cec5SDimitry Andric const int __bits_per_word = _It::__bits_per_word; 3430b57cec5SDimitry Andric // do first partial word 3440b57cec5SDimitry Andric if (__first.__ctz_ != 0) 3450b57cec5SDimitry Andric { 3460b57cec5SDimitry Andric __storage_type __clz_f = static_cast<__storage_type>(__bits_per_word - __first.__ctz_); 3470b57cec5SDimitry Andric __storage_type __dn = _VSTD::min(__clz_f, __n); 3480b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); 3490b57cec5SDimitry Andric *__first.__seg_ &= ~__m; 3500b57cec5SDimitry Andric __n -= __dn; 3510b57cec5SDimitry Andric ++__first.__seg_; 3520b57cec5SDimitry Andric } 3530b57cec5SDimitry Andric // do middle whole words 3540b57cec5SDimitry Andric __storage_type __nw = __n / __bits_per_word; 355480093f4SDimitry Andric _VSTD::memset(_VSTD::__to_address(__first.__seg_), 0, __nw * sizeof(__storage_type)); 3560b57cec5SDimitry Andric __n -= __nw * __bits_per_word; 3570b57cec5SDimitry Andric // do last partial word 3580b57cec5SDimitry Andric if (__n > 0) 3590b57cec5SDimitry Andric { 3600b57cec5SDimitry Andric __first.__seg_ += __nw; 3610b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 3620b57cec5SDimitry Andric *__first.__seg_ &= ~__m; 3630b57cec5SDimitry Andric } 3640b57cec5SDimitry Andric} 3650b57cec5SDimitry Andric 3660b57cec5SDimitry Andrictemplate <class _Cp> 3670b57cec5SDimitry Andricvoid 3680b57cec5SDimitry Andric__fill_n_true(__bit_iterator<_Cp, false> __first, typename _Cp::size_type __n) 3690b57cec5SDimitry Andric{ 3700b57cec5SDimitry Andric typedef __bit_iterator<_Cp, false> _It; 3710b57cec5SDimitry Andric typedef typename _It::__storage_type __storage_type; 3720b57cec5SDimitry Andric const int __bits_per_word = _It::__bits_per_word; 3730b57cec5SDimitry Andric // do first partial word 3740b57cec5SDimitry Andric if (__first.__ctz_ != 0) 3750b57cec5SDimitry Andric { 3760b57cec5SDimitry Andric __storage_type __clz_f = static_cast<__storage_type>(__bits_per_word - __first.__ctz_); 3770b57cec5SDimitry Andric __storage_type __dn = _VSTD::min(__clz_f, __n); 3780b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); 3790b57cec5SDimitry Andric *__first.__seg_ |= __m; 3800b57cec5SDimitry Andric __n -= __dn; 3810b57cec5SDimitry Andric ++__first.__seg_; 3820b57cec5SDimitry Andric } 3830b57cec5SDimitry Andric // do middle whole words 3840b57cec5SDimitry Andric __storage_type __nw = __n / __bits_per_word; 385480093f4SDimitry Andric _VSTD::memset(_VSTD::__to_address(__first.__seg_), -1, __nw * sizeof(__storage_type)); 3860b57cec5SDimitry Andric __n -= __nw * __bits_per_word; 3870b57cec5SDimitry Andric // do last partial word 3880b57cec5SDimitry Andric if (__n > 0) 3890b57cec5SDimitry Andric { 3900b57cec5SDimitry Andric __first.__seg_ += __nw; 3910b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 3920b57cec5SDimitry Andric *__first.__seg_ |= __m; 3930b57cec5SDimitry Andric } 3940b57cec5SDimitry Andric} 3950b57cec5SDimitry Andric 3960b57cec5SDimitry Andrictemplate <class _Cp> 3970b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 3980b57cec5SDimitry Andricvoid 3990b57cec5SDimitry Andricfill_n(__bit_iterator<_Cp, false> __first, typename _Cp::size_type __n, bool __value_) 4000b57cec5SDimitry Andric{ 4010b57cec5SDimitry Andric if (__n > 0) 4020b57cec5SDimitry Andric { 4030b57cec5SDimitry Andric if (__value_) 404e8d8bef9SDimitry Andric _VSTD::__fill_n_true(__first, __n); 4050b57cec5SDimitry Andric else 406e8d8bef9SDimitry Andric _VSTD::__fill_n_false(__first, __n); 4070b57cec5SDimitry Andric } 4080b57cec5SDimitry Andric} 4090b57cec5SDimitry Andric 4100b57cec5SDimitry Andric// fill 4110b57cec5SDimitry Andric 4120b57cec5SDimitry Andrictemplate <class _Cp> 4130b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 4140b57cec5SDimitry Andricvoid 4150b57cec5SDimitry Andricfill(__bit_iterator<_Cp, false> __first, __bit_iterator<_Cp, false> __last, bool __value_) 4160b57cec5SDimitry Andric{ 4170b57cec5SDimitry Andric _VSTD::fill_n(__first, static_cast<typename _Cp::size_type>(__last - __first), __value_); 4180b57cec5SDimitry Andric} 4190b57cec5SDimitry Andric 4200b57cec5SDimitry Andric// copy 4210b57cec5SDimitry Andric 4220b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst> 4230b57cec5SDimitry Andric__bit_iterator<_Cp, false> 4240b57cec5SDimitry Andric__copy_aligned(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, 4250b57cec5SDimitry Andric __bit_iterator<_Cp, false> __result) 4260b57cec5SDimitry Andric{ 4270b57cec5SDimitry Andric typedef __bit_iterator<_Cp, _IsConst> _In; 4280b57cec5SDimitry Andric typedef typename _In::difference_type difference_type; 4290b57cec5SDimitry Andric typedef typename _In::__storage_type __storage_type; 4300b57cec5SDimitry Andric const int __bits_per_word = _In::__bits_per_word; 4310b57cec5SDimitry Andric difference_type __n = __last - __first; 4320b57cec5SDimitry Andric if (__n > 0) 4330b57cec5SDimitry Andric { 4340b57cec5SDimitry Andric // do first word 4350b57cec5SDimitry Andric if (__first.__ctz_ != 0) 4360b57cec5SDimitry Andric { 4370b57cec5SDimitry Andric unsigned __clz = __bits_per_word - __first.__ctz_; 4380b57cec5SDimitry Andric difference_type __dn = _VSTD::min(static_cast<difference_type>(__clz), __n); 4390b57cec5SDimitry Andric __n -= __dn; 4400b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz - __dn)); 4410b57cec5SDimitry Andric __storage_type __b = *__first.__seg_ & __m; 4420b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 4430b57cec5SDimitry Andric *__result.__seg_ |= __b; 4440b57cec5SDimitry Andric __result.__seg_ += (__dn + __result.__ctz_) / __bits_per_word; 4450b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>((__dn + __result.__ctz_) % __bits_per_word); 4460b57cec5SDimitry Andric ++__first.__seg_; 4470b57cec5SDimitry Andric // __first.__ctz_ = 0; 4480b57cec5SDimitry Andric } 4490b57cec5SDimitry Andric // __first.__ctz_ == 0; 4500b57cec5SDimitry Andric // do middle words 4510b57cec5SDimitry Andric __storage_type __nw = __n / __bits_per_word; 452480093f4SDimitry Andric _VSTD::memmove(_VSTD::__to_address(__result.__seg_), 453480093f4SDimitry Andric _VSTD::__to_address(__first.__seg_), 4540b57cec5SDimitry Andric __nw * sizeof(__storage_type)); 4550b57cec5SDimitry Andric __n -= __nw * __bits_per_word; 4560b57cec5SDimitry Andric __result.__seg_ += __nw; 4570b57cec5SDimitry Andric // do last word 4580b57cec5SDimitry Andric if (__n > 0) 4590b57cec5SDimitry Andric { 4600b57cec5SDimitry Andric __first.__seg_ += __nw; 4610b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 4620b57cec5SDimitry Andric __storage_type __b = *__first.__seg_ & __m; 4630b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 4640b57cec5SDimitry Andric *__result.__seg_ |= __b; 4650b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>(__n); 4660b57cec5SDimitry Andric } 4670b57cec5SDimitry Andric } 4680b57cec5SDimitry Andric return __result; 4690b57cec5SDimitry Andric} 4700b57cec5SDimitry Andric 4710b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst> 4720b57cec5SDimitry Andric__bit_iterator<_Cp, false> 4730b57cec5SDimitry Andric__copy_unaligned(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, 4740b57cec5SDimitry Andric __bit_iterator<_Cp, false> __result) 4750b57cec5SDimitry Andric{ 4760b57cec5SDimitry Andric typedef __bit_iterator<_Cp, _IsConst> _In; 4770b57cec5SDimitry Andric typedef typename _In::difference_type difference_type; 4780b57cec5SDimitry Andric typedef typename _In::__storage_type __storage_type; 4790b57cec5SDimitry Andric static const int __bits_per_word = _In::__bits_per_word; 4800b57cec5SDimitry Andric difference_type __n = __last - __first; 4810b57cec5SDimitry Andric if (__n > 0) 4820b57cec5SDimitry Andric { 4830b57cec5SDimitry Andric // do first word 4840b57cec5SDimitry Andric if (__first.__ctz_ != 0) 4850b57cec5SDimitry Andric { 4860b57cec5SDimitry Andric unsigned __clz_f = __bits_per_word - __first.__ctz_; 4870b57cec5SDimitry Andric difference_type __dn = _VSTD::min(static_cast<difference_type>(__clz_f), __n); 4880b57cec5SDimitry Andric __n -= __dn; 4890b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); 4900b57cec5SDimitry Andric __storage_type __b = *__first.__seg_ & __m; 4910b57cec5SDimitry Andric unsigned __clz_r = __bits_per_word - __result.__ctz_; 4920b57cec5SDimitry Andric __storage_type __ddn = _VSTD::min<__storage_type>(__dn, __clz_r); 4930b57cec5SDimitry Andric __m = (~__storage_type(0) << __result.__ctz_) & (~__storage_type(0) >> (__clz_r - __ddn)); 4940b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 4950b57cec5SDimitry Andric if (__result.__ctz_ > __first.__ctz_) 4960b57cec5SDimitry Andric *__result.__seg_ |= __b << (__result.__ctz_ - __first.__ctz_); 4970b57cec5SDimitry Andric else 4980b57cec5SDimitry Andric *__result.__seg_ |= __b >> (__first.__ctz_ - __result.__ctz_); 4990b57cec5SDimitry Andric __result.__seg_ += (__ddn + __result.__ctz_) / __bits_per_word; 5000b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>((__ddn + __result.__ctz_) % __bits_per_word); 5010b57cec5SDimitry Andric __dn -= __ddn; 5020b57cec5SDimitry Andric if (__dn > 0) 5030b57cec5SDimitry Andric { 5040b57cec5SDimitry Andric __m = ~__storage_type(0) >> (__bits_per_word - __dn); 5050b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 5060b57cec5SDimitry Andric *__result.__seg_ |= __b >> (__first.__ctz_ + __ddn); 5070b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>(__dn); 5080b57cec5SDimitry Andric } 5090b57cec5SDimitry Andric ++__first.__seg_; 5100b57cec5SDimitry Andric // __first.__ctz_ = 0; 5110b57cec5SDimitry Andric } 5120b57cec5SDimitry Andric // __first.__ctz_ == 0; 5130b57cec5SDimitry Andric // do middle words 5140b57cec5SDimitry Andric unsigned __clz_r = __bits_per_word - __result.__ctz_; 5150b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) << __result.__ctz_; 5160b57cec5SDimitry Andric for (; __n >= __bits_per_word; __n -= __bits_per_word, ++__first.__seg_) 5170b57cec5SDimitry Andric { 5180b57cec5SDimitry Andric __storage_type __b = *__first.__seg_; 5190b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 5200b57cec5SDimitry Andric *__result.__seg_ |= __b << __result.__ctz_; 5210b57cec5SDimitry Andric ++__result.__seg_; 5220b57cec5SDimitry Andric *__result.__seg_ &= __m; 5230b57cec5SDimitry Andric *__result.__seg_ |= __b >> __clz_r; 5240b57cec5SDimitry Andric } 5250b57cec5SDimitry Andric // do last word 5260b57cec5SDimitry Andric if (__n > 0) 5270b57cec5SDimitry Andric { 5280b57cec5SDimitry Andric __m = ~__storage_type(0) >> (__bits_per_word - __n); 5290b57cec5SDimitry Andric __storage_type __b = *__first.__seg_ & __m; 5300b57cec5SDimitry Andric __storage_type __dn = _VSTD::min(__n, static_cast<difference_type>(__clz_r)); 5310b57cec5SDimitry Andric __m = (~__storage_type(0) << __result.__ctz_) & (~__storage_type(0) >> (__clz_r - __dn)); 5320b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 5330b57cec5SDimitry Andric *__result.__seg_ |= __b << __result.__ctz_; 5340b57cec5SDimitry Andric __result.__seg_ += (__dn + __result.__ctz_) / __bits_per_word; 5350b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>((__dn + __result.__ctz_) % __bits_per_word); 5360b57cec5SDimitry Andric __n -= __dn; 5370b57cec5SDimitry Andric if (__n > 0) 5380b57cec5SDimitry Andric { 5390b57cec5SDimitry Andric __m = ~__storage_type(0) >> (__bits_per_word - __n); 5400b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 5410b57cec5SDimitry Andric *__result.__seg_ |= __b >> __dn; 5420b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>(__n); 5430b57cec5SDimitry Andric } 5440b57cec5SDimitry Andric } 5450b57cec5SDimitry Andric } 5460b57cec5SDimitry Andric return __result; 5470b57cec5SDimitry Andric} 5480b57cec5SDimitry Andric 5490b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst> 5500b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 5510b57cec5SDimitry Andric__bit_iterator<_Cp, false> 5520b57cec5SDimitry Andriccopy(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, __bit_iterator<_Cp, false> __result) 5530b57cec5SDimitry Andric{ 5540b57cec5SDimitry Andric if (__first.__ctz_ == __result.__ctz_) 555e8d8bef9SDimitry Andric return _VSTD::__copy_aligned(__first, __last, __result); 556e8d8bef9SDimitry Andric return _VSTD::__copy_unaligned(__first, __last, __result); 5570b57cec5SDimitry Andric} 5580b57cec5SDimitry Andric 5590b57cec5SDimitry Andric// copy_backward 5600b57cec5SDimitry Andric 5610b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst> 5620b57cec5SDimitry Andric__bit_iterator<_Cp, false> 5630b57cec5SDimitry Andric__copy_backward_aligned(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, 5640b57cec5SDimitry Andric __bit_iterator<_Cp, false> __result) 5650b57cec5SDimitry Andric{ 5660b57cec5SDimitry Andric typedef __bit_iterator<_Cp, _IsConst> _In; 5670b57cec5SDimitry Andric typedef typename _In::difference_type difference_type; 5680b57cec5SDimitry Andric typedef typename _In::__storage_type __storage_type; 5690b57cec5SDimitry Andric const int __bits_per_word = _In::__bits_per_word; 5700b57cec5SDimitry Andric difference_type __n = __last - __first; 5710b57cec5SDimitry Andric if (__n > 0) 5720b57cec5SDimitry Andric { 5730b57cec5SDimitry Andric // do first word 5740b57cec5SDimitry Andric if (__last.__ctz_ != 0) 5750b57cec5SDimitry Andric { 5760b57cec5SDimitry Andric difference_type __dn = _VSTD::min(static_cast<difference_type>(__last.__ctz_), __n); 5770b57cec5SDimitry Andric __n -= __dn; 5780b57cec5SDimitry Andric unsigned __clz = __bits_per_word - __last.__ctz_; 5790b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << (__last.__ctz_ - __dn)) & (~__storage_type(0) >> __clz); 5800b57cec5SDimitry Andric __storage_type __b = *__last.__seg_ & __m; 5810b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 5820b57cec5SDimitry Andric *__result.__seg_ |= __b; 5830b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>(((-__dn & (__bits_per_word - 1)) + 5840b57cec5SDimitry Andric __result.__ctz_) % __bits_per_word); 5850b57cec5SDimitry Andric // __last.__ctz_ = 0 5860b57cec5SDimitry Andric } 5870b57cec5SDimitry Andric // __last.__ctz_ == 0 || __n == 0 5880b57cec5SDimitry Andric // __result.__ctz_ == 0 || __n == 0 5890b57cec5SDimitry Andric // do middle words 5900b57cec5SDimitry Andric __storage_type __nw = __n / __bits_per_word; 5910b57cec5SDimitry Andric __result.__seg_ -= __nw; 5920b57cec5SDimitry Andric __last.__seg_ -= __nw; 593480093f4SDimitry Andric _VSTD::memmove(_VSTD::__to_address(__result.__seg_), 594480093f4SDimitry Andric _VSTD::__to_address(__last.__seg_), 5950b57cec5SDimitry Andric __nw * sizeof(__storage_type)); 5960b57cec5SDimitry Andric __n -= __nw * __bits_per_word; 5970b57cec5SDimitry Andric // do last word 5980b57cec5SDimitry Andric if (__n > 0) 5990b57cec5SDimitry Andric { 6000b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) << (__bits_per_word - __n); 6010b57cec5SDimitry Andric __storage_type __b = *--__last.__seg_ & __m; 6020b57cec5SDimitry Andric *--__result.__seg_ &= ~__m; 6030b57cec5SDimitry Andric *__result.__seg_ |= __b; 6040b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>(-__n & (__bits_per_word - 1)); 6050b57cec5SDimitry Andric } 6060b57cec5SDimitry Andric } 6070b57cec5SDimitry Andric return __result; 6080b57cec5SDimitry Andric} 6090b57cec5SDimitry Andric 6100b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst> 6110b57cec5SDimitry Andric__bit_iterator<_Cp, false> 6120b57cec5SDimitry Andric__copy_backward_unaligned(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, 6130b57cec5SDimitry Andric __bit_iterator<_Cp, false> __result) 6140b57cec5SDimitry Andric{ 6150b57cec5SDimitry Andric typedef __bit_iterator<_Cp, _IsConst> _In; 6160b57cec5SDimitry Andric typedef typename _In::difference_type difference_type; 6170b57cec5SDimitry Andric typedef typename _In::__storage_type __storage_type; 6180b57cec5SDimitry Andric const int __bits_per_word = _In::__bits_per_word; 6190b57cec5SDimitry Andric difference_type __n = __last - __first; 6200b57cec5SDimitry Andric if (__n > 0) 6210b57cec5SDimitry Andric { 6220b57cec5SDimitry Andric // do first word 6230b57cec5SDimitry Andric if (__last.__ctz_ != 0) 6240b57cec5SDimitry Andric { 6250b57cec5SDimitry Andric difference_type __dn = _VSTD::min(static_cast<difference_type>(__last.__ctz_), __n); 6260b57cec5SDimitry Andric __n -= __dn; 6270b57cec5SDimitry Andric unsigned __clz_l = __bits_per_word - __last.__ctz_; 6280b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << (__last.__ctz_ - __dn)) & (~__storage_type(0) >> __clz_l); 6290b57cec5SDimitry Andric __storage_type __b = *__last.__seg_ & __m; 6300b57cec5SDimitry Andric unsigned __clz_r = __bits_per_word - __result.__ctz_; 6310b57cec5SDimitry Andric __storage_type __ddn = _VSTD::min(__dn, static_cast<difference_type>(__result.__ctz_)); 6320b57cec5SDimitry Andric if (__ddn > 0) 6330b57cec5SDimitry Andric { 6340b57cec5SDimitry Andric __m = (~__storage_type(0) << (__result.__ctz_ - __ddn)) & (~__storage_type(0) >> __clz_r); 6350b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 6360b57cec5SDimitry Andric if (__result.__ctz_ > __last.__ctz_) 6370b57cec5SDimitry Andric *__result.__seg_ |= __b << (__result.__ctz_ - __last.__ctz_); 6380b57cec5SDimitry Andric else 6390b57cec5SDimitry Andric *__result.__seg_ |= __b >> (__last.__ctz_ - __result.__ctz_); 6400b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>(((-__ddn & (__bits_per_word - 1)) + 6410b57cec5SDimitry Andric __result.__ctz_) % __bits_per_word); 6420b57cec5SDimitry Andric __dn -= __ddn; 6430b57cec5SDimitry Andric } 6440b57cec5SDimitry Andric if (__dn > 0) 6450b57cec5SDimitry Andric { 6460b57cec5SDimitry Andric // __result.__ctz_ == 0 6470b57cec5SDimitry Andric --__result.__seg_; 6480b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>(-__dn & (__bits_per_word - 1)); 6490b57cec5SDimitry Andric __m = ~__storage_type(0) << __result.__ctz_; 6500b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 6510b57cec5SDimitry Andric __last.__ctz_ -= __dn + __ddn; 6520b57cec5SDimitry Andric *__result.__seg_ |= __b << (__result.__ctz_ - __last.__ctz_); 6530b57cec5SDimitry Andric } 6540b57cec5SDimitry Andric // __last.__ctz_ = 0 6550b57cec5SDimitry Andric } 6560b57cec5SDimitry Andric // __last.__ctz_ == 0 || __n == 0 6570b57cec5SDimitry Andric // __result.__ctz_ != 0 || __n == 0 6580b57cec5SDimitry Andric // do middle words 6590b57cec5SDimitry Andric unsigned __clz_r = __bits_per_word - __result.__ctz_; 6600b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) >> __clz_r; 6610b57cec5SDimitry Andric for (; __n >= __bits_per_word; __n -= __bits_per_word) 6620b57cec5SDimitry Andric { 6630b57cec5SDimitry Andric __storage_type __b = *--__last.__seg_; 6640b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 6650b57cec5SDimitry Andric *__result.__seg_ |= __b >> __clz_r; 6660b57cec5SDimitry Andric *--__result.__seg_ &= __m; 6670b57cec5SDimitry Andric *__result.__seg_ |= __b << __result.__ctz_; 6680b57cec5SDimitry Andric } 6690b57cec5SDimitry Andric // do last word 6700b57cec5SDimitry Andric if (__n > 0) 6710b57cec5SDimitry Andric { 6720b57cec5SDimitry Andric __m = ~__storage_type(0) << (__bits_per_word - __n); 6730b57cec5SDimitry Andric __storage_type __b = *--__last.__seg_ & __m; 6740b57cec5SDimitry Andric __clz_r = __bits_per_word - __result.__ctz_; 6750b57cec5SDimitry Andric __storage_type __dn = _VSTD::min(__n, static_cast<difference_type>(__result.__ctz_)); 6760b57cec5SDimitry Andric __m = (~__storage_type(0) << (__result.__ctz_ - __dn)) & (~__storage_type(0) >> __clz_r); 6770b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 6780b57cec5SDimitry Andric *__result.__seg_ |= __b >> (__bits_per_word - __result.__ctz_); 6790b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>(((-__dn & (__bits_per_word - 1)) + 6800b57cec5SDimitry Andric __result.__ctz_) % __bits_per_word); 6810b57cec5SDimitry Andric __n -= __dn; 6820b57cec5SDimitry Andric if (__n > 0) 6830b57cec5SDimitry Andric { 6840b57cec5SDimitry Andric // __result.__ctz_ == 0 6850b57cec5SDimitry Andric --__result.__seg_; 6860b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>(-__n & (__bits_per_word - 1)); 6870b57cec5SDimitry Andric __m = ~__storage_type(0) << __result.__ctz_; 6880b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 6890b57cec5SDimitry Andric *__result.__seg_ |= __b << (__result.__ctz_ - (__bits_per_word - __n - __dn)); 6900b57cec5SDimitry Andric } 6910b57cec5SDimitry Andric } 6920b57cec5SDimitry Andric } 6930b57cec5SDimitry Andric return __result; 6940b57cec5SDimitry Andric} 6950b57cec5SDimitry Andric 6960b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst> 6970b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 6980b57cec5SDimitry Andric__bit_iterator<_Cp, false> 6990b57cec5SDimitry Andriccopy_backward(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, __bit_iterator<_Cp, false> __result) 7000b57cec5SDimitry Andric{ 7010b57cec5SDimitry Andric if (__last.__ctz_ == __result.__ctz_) 702e8d8bef9SDimitry Andric return _VSTD::__copy_backward_aligned(__first, __last, __result); 703e8d8bef9SDimitry Andric return _VSTD::__copy_backward_unaligned(__first, __last, __result); 7040b57cec5SDimitry Andric} 7050b57cec5SDimitry Andric 7060b57cec5SDimitry Andric// move 7070b57cec5SDimitry Andric 7080b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst> 7090b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 7100b57cec5SDimitry Andric__bit_iterator<_Cp, false> 7110b57cec5SDimitry Andricmove(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, __bit_iterator<_Cp, false> __result) 7120b57cec5SDimitry Andric{ 7130b57cec5SDimitry Andric return _VSTD::copy(__first, __last, __result); 7140b57cec5SDimitry Andric} 7150b57cec5SDimitry Andric 7160b57cec5SDimitry Andric// move_backward 7170b57cec5SDimitry Andric 7180b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst> 7190b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 7200b57cec5SDimitry Andric__bit_iterator<_Cp, false> 7210b57cec5SDimitry Andricmove_backward(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, __bit_iterator<_Cp, false> __result) 7220b57cec5SDimitry Andric{ 7230b57cec5SDimitry Andric return _VSTD::copy_backward(__first, __last, __result); 7240b57cec5SDimitry Andric} 7250b57cec5SDimitry Andric 7260b57cec5SDimitry Andric// swap_ranges 7270b57cec5SDimitry Andric 7280b57cec5SDimitry Andrictemplate <class __C1, class __C2> 7290b57cec5SDimitry Andric__bit_iterator<__C2, false> 7300b57cec5SDimitry Andric__swap_ranges_aligned(__bit_iterator<__C1, false> __first, __bit_iterator<__C1, false> __last, 7310b57cec5SDimitry Andric __bit_iterator<__C2, false> __result) 7320b57cec5SDimitry Andric{ 7330b57cec5SDimitry Andric typedef __bit_iterator<__C1, false> _I1; 7340b57cec5SDimitry Andric typedef typename _I1::difference_type difference_type; 7350b57cec5SDimitry Andric typedef typename _I1::__storage_type __storage_type; 7360b57cec5SDimitry Andric const int __bits_per_word = _I1::__bits_per_word; 7370b57cec5SDimitry Andric difference_type __n = __last - __first; 7380b57cec5SDimitry Andric if (__n > 0) 7390b57cec5SDimitry Andric { 7400b57cec5SDimitry Andric // do first word 7410b57cec5SDimitry Andric if (__first.__ctz_ != 0) 7420b57cec5SDimitry Andric { 7430b57cec5SDimitry Andric unsigned __clz = __bits_per_word - __first.__ctz_; 7440b57cec5SDimitry Andric difference_type __dn = _VSTD::min(static_cast<difference_type>(__clz), __n); 7450b57cec5SDimitry Andric __n -= __dn; 7460b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz - __dn)); 7470b57cec5SDimitry Andric __storage_type __b1 = *__first.__seg_ & __m; 7480b57cec5SDimitry Andric *__first.__seg_ &= ~__m; 7490b57cec5SDimitry Andric __storage_type __b2 = *__result.__seg_ & __m; 7500b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 7510b57cec5SDimitry Andric *__result.__seg_ |= __b1; 7520b57cec5SDimitry Andric *__first.__seg_ |= __b2; 7530b57cec5SDimitry Andric __result.__seg_ += (__dn + __result.__ctz_) / __bits_per_word; 7540b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>((__dn + __result.__ctz_) % __bits_per_word); 7550b57cec5SDimitry Andric ++__first.__seg_; 7560b57cec5SDimitry Andric // __first.__ctz_ = 0; 7570b57cec5SDimitry Andric } 7580b57cec5SDimitry Andric // __first.__ctz_ == 0; 7590b57cec5SDimitry Andric // do middle words 7600b57cec5SDimitry Andric for (; __n >= __bits_per_word; __n -= __bits_per_word, ++__first.__seg_, ++__result.__seg_) 7610b57cec5SDimitry Andric swap(*__first.__seg_, *__result.__seg_); 7620b57cec5SDimitry Andric // do last word 7630b57cec5SDimitry Andric if (__n > 0) 7640b57cec5SDimitry Andric { 7650b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 7660b57cec5SDimitry Andric __storage_type __b1 = *__first.__seg_ & __m; 7670b57cec5SDimitry Andric *__first.__seg_ &= ~__m; 7680b57cec5SDimitry Andric __storage_type __b2 = *__result.__seg_ & __m; 7690b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 7700b57cec5SDimitry Andric *__result.__seg_ |= __b1; 7710b57cec5SDimitry Andric *__first.__seg_ |= __b2; 7720b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>(__n); 7730b57cec5SDimitry Andric } 7740b57cec5SDimitry Andric } 7750b57cec5SDimitry Andric return __result; 7760b57cec5SDimitry Andric} 7770b57cec5SDimitry Andric 7780b57cec5SDimitry Andrictemplate <class __C1, class __C2> 7790b57cec5SDimitry Andric__bit_iterator<__C2, false> 7800b57cec5SDimitry Andric__swap_ranges_unaligned(__bit_iterator<__C1, false> __first, __bit_iterator<__C1, false> __last, 7810b57cec5SDimitry Andric __bit_iterator<__C2, false> __result) 7820b57cec5SDimitry Andric{ 7830b57cec5SDimitry Andric typedef __bit_iterator<__C1, false> _I1; 7840b57cec5SDimitry Andric typedef typename _I1::difference_type difference_type; 7850b57cec5SDimitry Andric typedef typename _I1::__storage_type __storage_type; 7860b57cec5SDimitry Andric const int __bits_per_word = _I1::__bits_per_word; 7870b57cec5SDimitry Andric difference_type __n = __last - __first; 7880b57cec5SDimitry Andric if (__n > 0) 7890b57cec5SDimitry Andric { 7900b57cec5SDimitry Andric // do first word 7910b57cec5SDimitry Andric if (__first.__ctz_ != 0) 7920b57cec5SDimitry Andric { 7930b57cec5SDimitry Andric unsigned __clz_f = __bits_per_word - __first.__ctz_; 7940b57cec5SDimitry Andric difference_type __dn = _VSTD::min(static_cast<difference_type>(__clz_f), __n); 7950b57cec5SDimitry Andric __n -= __dn; 7960b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << __first.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); 7970b57cec5SDimitry Andric __storage_type __b1 = *__first.__seg_ & __m; 7980b57cec5SDimitry Andric *__first.__seg_ &= ~__m; 7990b57cec5SDimitry Andric unsigned __clz_r = __bits_per_word - __result.__ctz_; 8000b57cec5SDimitry Andric __storage_type __ddn = _VSTD::min<__storage_type>(__dn, __clz_r); 8010b57cec5SDimitry Andric __m = (~__storage_type(0) << __result.__ctz_) & (~__storage_type(0) >> (__clz_r - __ddn)); 8020b57cec5SDimitry Andric __storage_type __b2 = *__result.__seg_ & __m; 8030b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 8040b57cec5SDimitry Andric if (__result.__ctz_ > __first.__ctz_) 8050b57cec5SDimitry Andric { 8060b57cec5SDimitry Andric unsigned __s = __result.__ctz_ - __first.__ctz_; 8070b57cec5SDimitry Andric *__result.__seg_ |= __b1 << __s; 8080b57cec5SDimitry Andric *__first.__seg_ |= __b2 >> __s; 8090b57cec5SDimitry Andric } 8100b57cec5SDimitry Andric else 8110b57cec5SDimitry Andric { 8120b57cec5SDimitry Andric unsigned __s = __first.__ctz_ - __result.__ctz_; 8130b57cec5SDimitry Andric *__result.__seg_ |= __b1 >> __s; 8140b57cec5SDimitry Andric *__first.__seg_ |= __b2 << __s; 8150b57cec5SDimitry Andric } 8160b57cec5SDimitry Andric __result.__seg_ += (__ddn + __result.__ctz_) / __bits_per_word; 8170b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>((__ddn + __result.__ctz_) % __bits_per_word); 8180b57cec5SDimitry Andric __dn -= __ddn; 8190b57cec5SDimitry Andric if (__dn > 0) 8200b57cec5SDimitry Andric { 8210b57cec5SDimitry Andric __m = ~__storage_type(0) >> (__bits_per_word - __dn); 8220b57cec5SDimitry Andric __b2 = *__result.__seg_ & __m; 8230b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 8240b57cec5SDimitry Andric unsigned __s = __first.__ctz_ + __ddn; 8250b57cec5SDimitry Andric *__result.__seg_ |= __b1 >> __s; 8260b57cec5SDimitry Andric *__first.__seg_ |= __b2 << __s; 8270b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>(__dn); 8280b57cec5SDimitry Andric } 8290b57cec5SDimitry Andric ++__first.__seg_; 8300b57cec5SDimitry Andric // __first.__ctz_ = 0; 8310b57cec5SDimitry Andric } 8320b57cec5SDimitry Andric // __first.__ctz_ == 0; 8330b57cec5SDimitry Andric // do middle words 8340b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) << __result.__ctz_; 8350b57cec5SDimitry Andric unsigned __clz_r = __bits_per_word - __result.__ctz_; 8360b57cec5SDimitry Andric for (; __n >= __bits_per_word; __n -= __bits_per_word, ++__first.__seg_) 8370b57cec5SDimitry Andric { 8380b57cec5SDimitry Andric __storage_type __b1 = *__first.__seg_; 8390b57cec5SDimitry Andric __storage_type __b2 = *__result.__seg_ & __m; 8400b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 8410b57cec5SDimitry Andric *__result.__seg_ |= __b1 << __result.__ctz_; 8420b57cec5SDimitry Andric *__first.__seg_ = __b2 >> __result.__ctz_; 8430b57cec5SDimitry Andric ++__result.__seg_; 8440b57cec5SDimitry Andric __b2 = *__result.__seg_ & ~__m; 8450b57cec5SDimitry Andric *__result.__seg_ &= __m; 8460b57cec5SDimitry Andric *__result.__seg_ |= __b1 >> __clz_r; 8470b57cec5SDimitry Andric *__first.__seg_ |= __b2 << __clz_r; 8480b57cec5SDimitry Andric } 8490b57cec5SDimitry Andric // do last word 8500b57cec5SDimitry Andric if (__n > 0) 8510b57cec5SDimitry Andric { 8520b57cec5SDimitry Andric __m = ~__storage_type(0) >> (__bits_per_word - __n); 8530b57cec5SDimitry Andric __storage_type __b1 = *__first.__seg_ & __m; 8540b57cec5SDimitry Andric *__first.__seg_ &= ~__m; 8550b57cec5SDimitry Andric __storage_type __dn = _VSTD::min<__storage_type>(__n, __clz_r); 8560b57cec5SDimitry Andric __m = (~__storage_type(0) << __result.__ctz_) & (~__storage_type(0) >> (__clz_r - __dn)); 8570b57cec5SDimitry Andric __storage_type __b2 = *__result.__seg_ & __m; 8580b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 8590b57cec5SDimitry Andric *__result.__seg_ |= __b1 << __result.__ctz_; 8600b57cec5SDimitry Andric *__first.__seg_ |= __b2 >> __result.__ctz_; 8610b57cec5SDimitry Andric __result.__seg_ += (__dn + __result.__ctz_) / __bits_per_word; 8620b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>((__dn + __result.__ctz_) % __bits_per_word); 8630b57cec5SDimitry Andric __n -= __dn; 8640b57cec5SDimitry Andric if (__n > 0) 8650b57cec5SDimitry Andric { 8660b57cec5SDimitry Andric __m = ~__storage_type(0) >> (__bits_per_word - __n); 8670b57cec5SDimitry Andric __b2 = *__result.__seg_ & __m; 8680b57cec5SDimitry Andric *__result.__seg_ &= ~__m; 8690b57cec5SDimitry Andric *__result.__seg_ |= __b1 >> __dn; 8700b57cec5SDimitry Andric *__first.__seg_ |= __b2 << __dn; 8710b57cec5SDimitry Andric __result.__ctz_ = static_cast<unsigned>(__n); 8720b57cec5SDimitry Andric } 8730b57cec5SDimitry Andric } 8740b57cec5SDimitry Andric } 8750b57cec5SDimitry Andric return __result; 8760b57cec5SDimitry Andric} 8770b57cec5SDimitry Andric 8780b57cec5SDimitry Andrictemplate <class __C1, class __C2> 8790b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 8800b57cec5SDimitry Andric__bit_iterator<__C2, false> 8810b57cec5SDimitry Andricswap_ranges(__bit_iterator<__C1, false> __first1, __bit_iterator<__C1, false> __last1, 8820b57cec5SDimitry Andric __bit_iterator<__C2, false> __first2) 8830b57cec5SDimitry Andric{ 8840b57cec5SDimitry Andric if (__first1.__ctz_ == __first2.__ctz_) 885e8d8bef9SDimitry Andric return _VSTD::__swap_ranges_aligned(__first1, __last1, __first2); 886e8d8bef9SDimitry Andric return _VSTD::__swap_ranges_unaligned(__first1, __last1, __first2); 8870b57cec5SDimitry Andric} 8880b57cec5SDimitry Andric 8890b57cec5SDimitry Andric// rotate 8900b57cec5SDimitry Andric 8910b57cec5SDimitry Andrictemplate <class _Cp> 8920b57cec5SDimitry Andricstruct __bit_array 8930b57cec5SDimitry Andric{ 8940b57cec5SDimitry Andric typedef typename _Cp::difference_type difference_type; 8950b57cec5SDimitry Andric typedef typename _Cp::__storage_type __storage_type; 8960b57cec5SDimitry Andric typedef typename _Cp::__storage_pointer __storage_pointer; 8970b57cec5SDimitry Andric typedef typename _Cp::iterator iterator; 8980b57cec5SDimitry Andric static const unsigned __bits_per_word = _Cp::__bits_per_word; 8990b57cec5SDimitry Andric static const unsigned _Np = 4; 9000b57cec5SDimitry Andric 9010b57cec5SDimitry Andric difference_type __size_; 9020b57cec5SDimitry Andric __storage_type __word_[_Np]; 9030b57cec5SDimitry Andric 9040b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY static difference_type capacity() 9050b57cec5SDimitry Andric {return static_cast<difference_type>(_Np * __bits_per_word);} 9060b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY explicit __bit_array(difference_type __s) : __size_(__s) {} 9070b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY iterator begin() 9080b57cec5SDimitry Andric { 9090b57cec5SDimitry Andric return iterator(pointer_traits<__storage_pointer>::pointer_to(__word_[0]), 0); 9100b57cec5SDimitry Andric } 9110b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY iterator end() 9120b57cec5SDimitry Andric { 9130b57cec5SDimitry Andric return iterator(pointer_traits<__storage_pointer>::pointer_to(__word_[0]) + __size_ / __bits_per_word, 9140b57cec5SDimitry Andric static_cast<unsigned>(__size_ % __bits_per_word)); 9150b57cec5SDimitry Andric } 9160b57cec5SDimitry Andric}; 9170b57cec5SDimitry Andric 9180b57cec5SDimitry Andrictemplate <class _Cp> 9190b57cec5SDimitry Andric__bit_iterator<_Cp, false> 9200b57cec5SDimitry Andricrotate(__bit_iterator<_Cp, false> __first, __bit_iterator<_Cp, false> __middle, __bit_iterator<_Cp, false> __last) 9210b57cec5SDimitry Andric{ 9220b57cec5SDimitry Andric typedef __bit_iterator<_Cp, false> _I1; 9230b57cec5SDimitry Andric typedef typename _I1::difference_type difference_type; 9240b57cec5SDimitry Andric difference_type __d1 = __middle - __first; 9250b57cec5SDimitry Andric difference_type __d2 = __last - __middle; 9260b57cec5SDimitry Andric _I1 __r = __first + __d2; 9270b57cec5SDimitry Andric while (__d1 != 0 && __d2 != 0) 9280b57cec5SDimitry Andric { 9290b57cec5SDimitry Andric if (__d1 <= __d2) 9300b57cec5SDimitry Andric { 9310b57cec5SDimitry Andric if (__d1 <= __bit_array<_Cp>::capacity()) 9320b57cec5SDimitry Andric { 9330b57cec5SDimitry Andric __bit_array<_Cp> __b(__d1); 9340b57cec5SDimitry Andric _VSTD::copy(__first, __middle, __b.begin()); 9350b57cec5SDimitry Andric _VSTD::copy(__b.begin(), __b.end(), _VSTD::copy(__middle, __last, __first)); 9360b57cec5SDimitry Andric break; 9370b57cec5SDimitry Andric } 9380b57cec5SDimitry Andric else 9390b57cec5SDimitry Andric { 9400b57cec5SDimitry Andric __bit_iterator<_Cp, false> __mp = _VSTD::swap_ranges(__first, __middle, __middle); 9410b57cec5SDimitry Andric __first = __middle; 9420b57cec5SDimitry Andric __middle = __mp; 9430b57cec5SDimitry Andric __d2 -= __d1; 9440b57cec5SDimitry Andric } 9450b57cec5SDimitry Andric } 9460b57cec5SDimitry Andric else 9470b57cec5SDimitry Andric { 9480b57cec5SDimitry Andric if (__d2 <= __bit_array<_Cp>::capacity()) 9490b57cec5SDimitry Andric { 9500b57cec5SDimitry Andric __bit_array<_Cp> __b(__d2); 9510b57cec5SDimitry Andric _VSTD::copy(__middle, __last, __b.begin()); 9520b57cec5SDimitry Andric _VSTD::copy_backward(__b.begin(), __b.end(), _VSTD::copy_backward(__first, __middle, __last)); 9530b57cec5SDimitry Andric break; 9540b57cec5SDimitry Andric } 9550b57cec5SDimitry Andric else 9560b57cec5SDimitry Andric { 9570b57cec5SDimitry Andric __bit_iterator<_Cp, false> __mp = __first + __d2; 9580b57cec5SDimitry Andric _VSTD::swap_ranges(__first, __mp, __middle); 9590b57cec5SDimitry Andric __first = __mp; 9600b57cec5SDimitry Andric __d1 -= __d2; 9610b57cec5SDimitry Andric } 9620b57cec5SDimitry Andric } 9630b57cec5SDimitry Andric } 9640b57cec5SDimitry Andric return __r; 9650b57cec5SDimitry Andric} 9660b57cec5SDimitry Andric 9670b57cec5SDimitry Andric// equal 9680b57cec5SDimitry Andric 9690b57cec5SDimitry Andrictemplate <class _Cp, bool _IC1, bool _IC2> 9700b57cec5SDimitry Andricbool 9710b57cec5SDimitry Andric__equal_unaligned(__bit_iterator<_Cp, _IC1> __first1, __bit_iterator<_Cp, _IC1> __last1, 9720b57cec5SDimitry Andric __bit_iterator<_Cp, _IC2> __first2) 9730b57cec5SDimitry Andric{ 9740b57cec5SDimitry Andric typedef __bit_iterator<_Cp, _IC1> _It; 9750b57cec5SDimitry Andric typedef typename _It::difference_type difference_type; 9760b57cec5SDimitry Andric typedef typename _It::__storage_type __storage_type; 9770b57cec5SDimitry Andric static const int __bits_per_word = _It::__bits_per_word; 9780b57cec5SDimitry Andric difference_type __n = __last1 - __first1; 9790b57cec5SDimitry Andric if (__n > 0) 9800b57cec5SDimitry Andric { 9810b57cec5SDimitry Andric // do first word 9820b57cec5SDimitry Andric if (__first1.__ctz_ != 0) 9830b57cec5SDimitry Andric { 9840b57cec5SDimitry Andric unsigned __clz_f = __bits_per_word - __first1.__ctz_; 9850b57cec5SDimitry Andric difference_type __dn = _VSTD::min(static_cast<difference_type>(__clz_f), __n); 9860b57cec5SDimitry Andric __n -= __dn; 9870b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << __first1.__ctz_) & (~__storage_type(0) >> (__clz_f - __dn)); 9880b57cec5SDimitry Andric __storage_type __b = *__first1.__seg_ & __m; 9890b57cec5SDimitry Andric unsigned __clz_r = __bits_per_word - __first2.__ctz_; 9900b57cec5SDimitry Andric __storage_type __ddn = _VSTD::min<__storage_type>(__dn, __clz_r); 9910b57cec5SDimitry Andric __m = (~__storage_type(0) << __first2.__ctz_) & (~__storage_type(0) >> (__clz_r - __ddn)); 9920b57cec5SDimitry Andric if (__first2.__ctz_ > __first1.__ctz_) 9930b57cec5SDimitry Andric { 9940b57cec5SDimitry Andric if ((*__first2.__seg_ & __m) != (__b << (__first2.__ctz_ - __first1.__ctz_))) 9950b57cec5SDimitry Andric return false; 9960b57cec5SDimitry Andric } 9970b57cec5SDimitry Andric else 9980b57cec5SDimitry Andric { 9990b57cec5SDimitry Andric if ((*__first2.__seg_ & __m) != (__b >> (__first1.__ctz_ - __first2.__ctz_))) 10000b57cec5SDimitry Andric return false; 10010b57cec5SDimitry Andric } 10020b57cec5SDimitry Andric __first2.__seg_ += (__ddn + __first2.__ctz_) / __bits_per_word; 10030b57cec5SDimitry Andric __first2.__ctz_ = static_cast<unsigned>((__ddn + __first2.__ctz_) % __bits_per_word); 10040b57cec5SDimitry Andric __dn -= __ddn; 10050b57cec5SDimitry Andric if (__dn > 0) 10060b57cec5SDimitry Andric { 10070b57cec5SDimitry Andric __m = ~__storage_type(0) >> (__bits_per_word - __dn); 10080b57cec5SDimitry Andric if ((*__first2.__seg_ & __m) != (__b >> (__first1.__ctz_ + __ddn))) 10090b57cec5SDimitry Andric return false; 10100b57cec5SDimitry Andric __first2.__ctz_ = static_cast<unsigned>(__dn); 10110b57cec5SDimitry Andric } 10120b57cec5SDimitry Andric ++__first1.__seg_; 10130b57cec5SDimitry Andric // __first1.__ctz_ = 0; 10140b57cec5SDimitry Andric } 10150b57cec5SDimitry Andric // __first1.__ctz_ == 0; 10160b57cec5SDimitry Andric // do middle words 10170b57cec5SDimitry Andric unsigned __clz_r = __bits_per_word - __first2.__ctz_; 10180b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) << __first2.__ctz_; 10190b57cec5SDimitry Andric for (; __n >= __bits_per_word; __n -= __bits_per_word, ++__first1.__seg_) 10200b57cec5SDimitry Andric { 10210b57cec5SDimitry Andric __storage_type __b = *__first1.__seg_; 10220b57cec5SDimitry Andric if ((*__first2.__seg_ & __m) != (__b << __first2.__ctz_)) 10230b57cec5SDimitry Andric return false; 10240b57cec5SDimitry Andric ++__first2.__seg_; 10250b57cec5SDimitry Andric if ((*__first2.__seg_ & ~__m) != (__b >> __clz_r)) 10260b57cec5SDimitry Andric return false; 10270b57cec5SDimitry Andric } 10280b57cec5SDimitry Andric // do last word 10290b57cec5SDimitry Andric if (__n > 0) 10300b57cec5SDimitry Andric { 10310b57cec5SDimitry Andric __m = ~__storage_type(0) >> (__bits_per_word - __n); 10320b57cec5SDimitry Andric __storage_type __b = *__first1.__seg_ & __m; 10330b57cec5SDimitry Andric __storage_type __dn = _VSTD::min(__n, static_cast<difference_type>(__clz_r)); 10340b57cec5SDimitry Andric __m = (~__storage_type(0) << __first2.__ctz_) & (~__storage_type(0) >> (__clz_r - __dn)); 10350b57cec5SDimitry Andric if ((*__first2.__seg_ & __m) != (__b << __first2.__ctz_)) 10360b57cec5SDimitry Andric return false; 10370b57cec5SDimitry Andric __first2.__seg_ += (__dn + __first2.__ctz_) / __bits_per_word; 10380b57cec5SDimitry Andric __first2.__ctz_ = static_cast<unsigned>((__dn + __first2.__ctz_) % __bits_per_word); 10390b57cec5SDimitry Andric __n -= __dn; 10400b57cec5SDimitry Andric if (__n > 0) 10410b57cec5SDimitry Andric { 10420b57cec5SDimitry Andric __m = ~__storage_type(0) >> (__bits_per_word - __n); 10430b57cec5SDimitry Andric if ((*__first2.__seg_ & __m) != (__b >> __dn)) 10440b57cec5SDimitry Andric return false; 10450b57cec5SDimitry Andric } 10460b57cec5SDimitry Andric } 10470b57cec5SDimitry Andric } 10480b57cec5SDimitry Andric return true; 10490b57cec5SDimitry Andric} 10500b57cec5SDimitry Andric 10510b57cec5SDimitry Andrictemplate <class _Cp, bool _IC1, bool _IC2> 10520b57cec5SDimitry Andricbool 10530b57cec5SDimitry Andric__equal_aligned(__bit_iterator<_Cp, _IC1> __first1, __bit_iterator<_Cp, _IC1> __last1, 10540b57cec5SDimitry Andric __bit_iterator<_Cp, _IC2> __first2) 10550b57cec5SDimitry Andric{ 10560b57cec5SDimitry Andric typedef __bit_iterator<_Cp, _IC1> _It; 10570b57cec5SDimitry Andric typedef typename _It::difference_type difference_type; 10580b57cec5SDimitry Andric typedef typename _It::__storage_type __storage_type; 10590b57cec5SDimitry Andric static const int __bits_per_word = _It::__bits_per_word; 10600b57cec5SDimitry Andric difference_type __n = __last1 - __first1; 10610b57cec5SDimitry Andric if (__n > 0) 10620b57cec5SDimitry Andric { 10630b57cec5SDimitry Andric // do first word 10640b57cec5SDimitry Andric if (__first1.__ctz_ != 0) 10650b57cec5SDimitry Andric { 10660b57cec5SDimitry Andric unsigned __clz = __bits_per_word - __first1.__ctz_; 10670b57cec5SDimitry Andric difference_type __dn = _VSTD::min(static_cast<difference_type>(__clz), __n); 10680b57cec5SDimitry Andric __n -= __dn; 10690b57cec5SDimitry Andric __storage_type __m = (~__storage_type(0) << __first1.__ctz_) & (~__storage_type(0) >> (__clz - __dn)); 10700b57cec5SDimitry Andric if ((*__first2.__seg_ & __m) != (*__first1.__seg_ & __m)) 10710b57cec5SDimitry Andric return false; 10720b57cec5SDimitry Andric ++__first2.__seg_; 10730b57cec5SDimitry Andric ++__first1.__seg_; 10740b57cec5SDimitry Andric // __first1.__ctz_ = 0; 10750b57cec5SDimitry Andric // __first2.__ctz_ = 0; 10760b57cec5SDimitry Andric } 10770b57cec5SDimitry Andric // __first1.__ctz_ == 0; 10780b57cec5SDimitry Andric // __first2.__ctz_ == 0; 10790b57cec5SDimitry Andric // do middle words 10800b57cec5SDimitry Andric for (; __n >= __bits_per_word; __n -= __bits_per_word, ++__first1.__seg_, ++__first2.__seg_) 10810b57cec5SDimitry Andric if (*__first2.__seg_ != *__first1.__seg_) 10820b57cec5SDimitry Andric return false; 10830b57cec5SDimitry Andric // do last word 10840b57cec5SDimitry Andric if (__n > 0) 10850b57cec5SDimitry Andric { 10860b57cec5SDimitry Andric __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 10870b57cec5SDimitry Andric if ((*__first2.__seg_ & __m) != (*__first1.__seg_ & __m)) 10880b57cec5SDimitry Andric return false; 10890b57cec5SDimitry Andric } 10900b57cec5SDimitry Andric } 10910b57cec5SDimitry Andric return true; 10920b57cec5SDimitry Andric} 10930b57cec5SDimitry Andric 10940b57cec5SDimitry Andrictemplate <class _Cp, bool _IC1, bool _IC2> 10950b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY 10960b57cec5SDimitry Andricbool 10970b57cec5SDimitry Andricequal(__bit_iterator<_Cp, _IC1> __first1, __bit_iterator<_Cp, _IC1> __last1, __bit_iterator<_Cp, _IC2> __first2) 10980b57cec5SDimitry Andric{ 10990b57cec5SDimitry Andric if (__first1.__ctz_ == __first2.__ctz_) 1100e8d8bef9SDimitry Andric return _VSTD::__equal_aligned(__first1, __last1, __first2); 1101e8d8bef9SDimitry Andric return _VSTD::__equal_unaligned(__first1, __last1, __first2); 11020b57cec5SDimitry Andric} 11030b57cec5SDimitry Andric 11040b57cec5SDimitry Andrictemplate <class _Cp, bool _IsConst, 11050b57cec5SDimitry Andric typename _Cp::__storage_type> 11060b57cec5SDimitry Andricclass __bit_iterator 11070b57cec5SDimitry Andric{ 11080b57cec5SDimitry Andricpublic: 11090b57cec5SDimitry Andric typedef typename _Cp::difference_type difference_type; 11100b57cec5SDimitry Andric typedef bool value_type; 11110b57cec5SDimitry Andric typedef __bit_iterator pointer; 1112*81ad6265SDimitry Andric#ifndef _LIBCPP_ABI_BITSET_VECTOR_BOOL_CONST_SUBSCRIPT_RETURN_BOOL 11130b57cec5SDimitry Andric typedef typename conditional<_IsConst, __bit_const_reference<_Cp>, __bit_reference<_Cp> >::type reference; 1114*81ad6265SDimitry Andric#else 1115*81ad6265SDimitry Andric using reference = typename conditional<_IsConst, bool, __bit_reference<_Cp> >::type; 1116*81ad6265SDimitry Andric#endif 11170b57cec5SDimitry Andric typedef random_access_iterator_tag iterator_category; 11180b57cec5SDimitry Andric 11190b57cec5SDimitry Andricprivate: 11200b57cec5SDimitry Andric typedef typename _Cp::__storage_type __storage_type; 11210b57cec5SDimitry Andric typedef typename conditional<_IsConst, typename _Cp::__const_storage_pointer, 11220b57cec5SDimitry Andric typename _Cp::__storage_pointer>::type __storage_pointer; 11230b57cec5SDimitry Andric static const unsigned __bits_per_word = _Cp::__bits_per_word; 11240b57cec5SDimitry Andric 11250b57cec5SDimitry Andric __storage_pointer __seg_; 11260b57cec5SDimitry Andric unsigned __ctz_; 11270b57cec5SDimitry Andric 11280b57cec5SDimitry Andricpublic: 11290b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY __bit_iterator() _NOEXCEPT 11300b57cec5SDimitry Andric#if _LIBCPP_STD_VER > 11 11310b57cec5SDimitry Andric : __seg_(nullptr), __ctz_(0) 11320b57cec5SDimitry Andric#endif 11330b57cec5SDimitry Andric {} 11340b57cec5SDimitry Andric 11354652422eSDimitry Andric // When _IsConst=false, this is the copy constructor. 11364652422eSDimitry Andric // It is non-trivial. Making it trivial would break ABI. 11374652422eSDimitry Andric // When _IsConst=true, this is a converting constructor; 11384652422eSDimitry Andric // the copy and move constructors are implicitly generated 11394652422eSDimitry Andric // and trivial. 11400b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY 11414652422eSDimitry Andric __bit_iterator(const __bit_iterator<_Cp, false>& __it) _NOEXCEPT 11420b57cec5SDimitry Andric : __seg_(__it.__seg_), __ctz_(__it.__ctz_) {} 11430b57cec5SDimitry Andric 11444652422eSDimitry Andric // When _IsConst=false, we have a user-provided copy constructor, 11454652422eSDimitry Andric // so we must also provide a copy assignment operator because 11464652422eSDimitry Andric // the implicit generation of a defaulted one is deprecated. 11474652422eSDimitry Andric // When _IsConst=true, the assignment operators are 11484652422eSDimitry Andric // implicitly generated and trivial. 114947395794SDimitry Andric _LIBCPP_INLINE_VISIBILITY 11504652422eSDimitry Andric __bit_iterator& operator=(const _If<_IsConst, struct __private_nat, __bit_iterator>& __it) { 11514652422eSDimitry Andric __seg_ = __it.__seg_; 11524652422eSDimitry Andric __ctz_ = __it.__ctz_; 11534652422eSDimitry Andric return *this; 11544652422eSDimitry Andric } 115547395794SDimitry Andric 1156*81ad6265SDimitry Andric _LIBCPP_INLINE_VISIBILITY reference operator*() const _NOEXCEPT { 1157*81ad6265SDimitry Andric return typename conditional<_IsConst, __bit_const_reference<_Cp>, __bit_reference<_Cp> > 1158*81ad6265SDimitry Andric ::type(__seg_, __storage_type(1) << __ctz_); 1159*81ad6265SDimitry Andric } 11600b57cec5SDimitry Andric 11610b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY __bit_iterator& operator++() 11620b57cec5SDimitry Andric { 11630b57cec5SDimitry Andric if (__ctz_ != __bits_per_word-1) 11640b57cec5SDimitry Andric ++__ctz_; 11650b57cec5SDimitry Andric else 11660b57cec5SDimitry Andric { 11670b57cec5SDimitry Andric __ctz_ = 0; 11680b57cec5SDimitry Andric ++__seg_; 11690b57cec5SDimitry Andric } 11700b57cec5SDimitry Andric return *this; 11710b57cec5SDimitry Andric } 11720b57cec5SDimitry Andric 11730b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY __bit_iterator operator++(int) 11740b57cec5SDimitry Andric { 11750b57cec5SDimitry Andric __bit_iterator __tmp = *this; 11760b57cec5SDimitry Andric ++(*this); 11770b57cec5SDimitry Andric return __tmp; 11780b57cec5SDimitry Andric } 11790b57cec5SDimitry Andric 11800b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY __bit_iterator& operator--() 11810b57cec5SDimitry Andric { 11820b57cec5SDimitry Andric if (__ctz_ != 0) 11830b57cec5SDimitry Andric --__ctz_; 11840b57cec5SDimitry Andric else 11850b57cec5SDimitry Andric { 11860b57cec5SDimitry Andric __ctz_ = __bits_per_word - 1; 11870b57cec5SDimitry Andric --__seg_; 11880b57cec5SDimitry Andric } 11890b57cec5SDimitry Andric return *this; 11900b57cec5SDimitry Andric } 11910b57cec5SDimitry Andric 11920b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY __bit_iterator operator--(int) 11930b57cec5SDimitry Andric { 11940b57cec5SDimitry Andric __bit_iterator __tmp = *this; 11950b57cec5SDimitry Andric --(*this); 11960b57cec5SDimitry Andric return __tmp; 11970b57cec5SDimitry Andric } 11980b57cec5SDimitry Andric 11990b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY __bit_iterator& operator+=(difference_type __n) 12000b57cec5SDimitry Andric { 12010b57cec5SDimitry Andric if (__n >= 0) 12020b57cec5SDimitry Andric __seg_ += (__n + __ctz_) / __bits_per_word; 12030b57cec5SDimitry Andric else 12040b57cec5SDimitry Andric __seg_ += static_cast<difference_type>(__n - __bits_per_word + __ctz_ + 1) 12050b57cec5SDimitry Andric / static_cast<difference_type>(__bits_per_word); 12060b57cec5SDimitry Andric __n &= (__bits_per_word - 1); 12070b57cec5SDimitry Andric __ctz_ = static_cast<unsigned>((__n + __ctz_) % __bits_per_word); 12080b57cec5SDimitry Andric return *this; 12090b57cec5SDimitry Andric } 12100b57cec5SDimitry Andric 12110b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY __bit_iterator& operator-=(difference_type __n) 12120b57cec5SDimitry Andric { 12130b57cec5SDimitry Andric return *this += -__n; 12140b57cec5SDimitry Andric } 12150b57cec5SDimitry Andric 12160b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY __bit_iterator operator+(difference_type __n) const 12170b57cec5SDimitry Andric { 12180b57cec5SDimitry Andric __bit_iterator __t(*this); 12190b57cec5SDimitry Andric __t += __n; 12200b57cec5SDimitry Andric return __t; 12210b57cec5SDimitry Andric } 12220b57cec5SDimitry Andric 12230b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY __bit_iterator operator-(difference_type __n) const 12240b57cec5SDimitry Andric { 12250b57cec5SDimitry Andric __bit_iterator __t(*this); 12260b57cec5SDimitry Andric __t -= __n; 12270b57cec5SDimitry Andric return __t; 12280b57cec5SDimitry Andric } 12290b57cec5SDimitry Andric 12300b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY 12310b57cec5SDimitry Andric friend __bit_iterator operator+(difference_type __n, const __bit_iterator& __it) {return __it + __n;} 12320b57cec5SDimitry Andric 12330b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY 12340b57cec5SDimitry Andric friend difference_type operator-(const __bit_iterator& __x, const __bit_iterator& __y) 12350b57cec5SDimitry Andric {return (__x.__seg_ - __y.__seg_) * __bits_per_word + __x.__ctz_ - __y.__ctz_;} 12360b57cec5SDimitry Andric 12370b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const {return *(*this + __n);} 12380b57cec5SDimitry Andric 12390b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY friend bool operator==(const __bit_iterator& __x, const __bit_iterator& __y) 12400b57cec5SDimitry Andric {return __x.__seg_ == __y.__seg_ && __x.__ctz_ == __y.__ctz_;} 12410b57cec5SDimitry Andric 12420b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY friend bool operator!=(const __bit_iterator& __x, const __bit_iterator& __y) 12430b57cec5SDimitry Andric {return !(__x == __y);} 12440b57cec5SDimitry Andric 12450b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY friend bool operator<(const __bit_iterator& __x, const __bit_iterator& __y) 12460b57cec5SDimitry Andric {return __x.__seg_ < __y.__seg_ || (__x.__seg_ == __y.__seg_ && __x.__ctz_ < __y.__ctz_);} 12470b57cec5SDimitry Andric 12480b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY friend bool operator>(const __bit_iterator& __x, const __bit_iterator& __y) 12490b57cec5SDimitry Andric {return __y < __x;} 12500b57cec5SDimitry Andric 12510b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY friend bool operator<=(const __bit_iterator& __x, const __bit_iterator& __y) 12520b57cec5SDimitry Andric {return !(__y < __x);} 12530b57cec5SDimitry Andric 12540b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY friend bool operator>=(const __bit_iterator& __x, const __bit_iterator& __y) 12550b57cec5SDimitry Andric {return !(__x < __y);} 12560b57cec5SDimitry Andric 12570b57cec5SDimitry Andricprivate: 12580b57cec5SDimitry Andric _LIBCPP_INLINE_VISIBILITY 1259*81ad6265SDimitry Andric explicit __bit_iterator(__storage_pointer __s, unsigned __ctz) _NOEXCEPT 12600b57cec5SDimitry Andric : __seg_(__s), __ctz_(__ctz) {} 12610b57cec5SDimitry Andric 12620b57cec5SDimitry Andric friend typename _Cp::__self; 12630b57cec5SDimitry Andric 12640b57cec5SDimitry Andric friend class __bit_reference<_Cp>; 12650b57cec5SDimitry Andric friend class __bit_const_reference<_Cp>; 12660b57cec5SDimitry Andric friend class __bit_iterator<_Cp, true>; 12670b57cec5SDimitry Andric template <class _Dp> friend struct __bit_array; 12680b57cec5SDimitry Andric template <class _Dp> friend void __fill_n_false(__bit_iterator<_Dp, false> __first, typename _Dp::size_type __n); 12690b57cec5SDimitry Andric template <class _Dp> friend void __fill_n_true(__bit_iterator<_Dp, false> __first, typename _Dp::size_type __n); 12700b57cec5SDimitry Andric template <class _Dp, bool _IC> friend __bit_iterator<_Dp, false> __copy_aligned(__bit_iterator<_Dp, _IC> __first, 12710b57cec5SDimitry Andric __bit_iterator<_Dp, _IC> __last, 12720b57cec5SDimitry Andric __bit_iterator<_Dp, false> __result); 12730b57cec5SDimitry Andric template <class _Dp, bool _IC> friend __bit_iterator<_Dp, false> __copy_unaligned(__bit_iterator<_Dp, _IC> __first, 12740b57cec5SDimitry Andric __bit_iterator<_Dp, _IC> __last, 12750b57cec5SDimitry Andric __bit_iterator<_Dp, false> __result); 12760b57cec5SDimitry Andric template <class _Dp, bool _IC> friend __bit_iterator<_Dp, false> copy(__bit_iterator<_Dp, _IC> __first, 12770b57cec5SDimitry Andric __bit_iterator<_Dp, _IC> __last, 12780b57cec5SDimitry Andric __bit_iterator<_Dp, false> __result); 12790b57cec5SDimitry Andric template <class _Dp, bool _IC> friend __bit_iterator<_Dp, false> __copy_backward_aligned(__bit_iterator<_Dp, _IC> __first, 12800b57cec5SDimitry Andric __bit_iterator<_Dp, _IC> __last, 12810b57cec5SDimitry Andric __bit_iterator<_Dp, false> __result); 12820b57cec5SDimitry Andric template <class _Dp, bool _IC> friend __bit_iterator<_Dp, false> __copy_backward_unaligned(__bit_iterator<_Dp, _IC> __first, 12830b57cec5SDimitry Andric __bit_iterator<_Dp, _IC> __last, 12840b57cec5SDimitry Andric __bit_iterator<_Dp, false> __result); 12850b57cec5SDimitry Andric template <class _Dp, bool _IC> friend __bit_iterator<_Dp, false> copy_backward(__bit_iterator<_Dp, _IC> __first, 12860b57cec5SDimitry Andric __bit_iterator<_Dp, _IC> __last, 12870b57cec5SDimitry Andric __bit_iterator<_Dp, false> __result); 12880b57cec5SDimitry Andric template <class __C1, class __C2>friend __bit_iterator<__C2, false> __swap_ranges_aligned(__bit_iterator<__C1, false>, 12890b57cec5SDimitry Andric __bit_iterator<__C1, false>, 12900b57cec5SDimitry Andric __bit_iterator<__C2, false>); 12910b57cec5SDimitry Andric template <class __C1, class __C2>friend __bit_iterator<__C2, false> __swap_ranges_unaligned(__bit_iterator<__C1, false>, 12920b57cec5SDimitry Andric __bit_iterator<__C1, false>, 12930b57cec5SDimitry Andric __bit_iterator<__C2, false>); 12940b57cec5SDimitry Andric template <class __C1, class __C2>friend __bit_iterator<__C2, false> swap_ranges(__bit_iterator<__C1, false>, 12950b57cec5SDimitry Andric __bit_iterator<__C1, false>, 12960b57cec5SDimitry Andric __bit_iterator<__C2, false>); 12970b57cec5SDimitry Andric template <class _Dp> friend __bit_iterator<_Dp, false> rotate(__bit_iterator<_Dp, false>, 12980b57cec5SDimitry Andric __bit_iterator<_Dp, false>, 12990b57cec5SDimitry Andric __bit_iterator<_Dp, false>); 13000b57cec5SDimitry Andric template <class _Dp, bool _IC1, bool _IC2> friend bool __equal_aligned(__bit_iterator<_Dp, _IC1>, 13010b57cec5SDimitry Andric __bit_iterator<_Dp, _IC1>, 13020b57cec5SDimitry Andric __bit_iterator<_Dp, _IC2>); 13030b57cec5SDimitry Andric template <class _Dp, bool _IC1, bool _IC2> friend bool __equal_unaligned(__bit_iterator<_Dp, _IC1>, 13040b57cec5SDimitry Andric __bit_iterator<_Dp, _IC1>, 13050b57cec5SDimitry Andric __bit_iterator<_Dp, _IC2>); 13060b57cec5SDimitry Andric template <class _Dp, bool _IC1, bool _IC2> friend bool equal(__bit_iterator<_Dp, _IC1>, 13070b57cec5SDimitry Andric __bit_iterator<_Dp, _IC1>, 13080b57cec5SDimitry Andric __bit_iterator<_Dp, _IC2>); 13090b57cec5SDimitry Andric template <class _Dp, bool _IC> friend __bit_iterator<_Dp, _IC> __find_bool_true(__bit_iterator<_Dp, _IC>, 13100b57cec5SDimitry Andric typename _Dp::size_type); 13110b57cec5SDimitry Andric template <class _Dp, bool _IC> friend __bit_iterator<_Dp, _IC> __find_bool_false(__bit_iterator<_Dp, _IC>, 13120b57cec5SDimitry Andric typename _Dp::size_type); 13130b57cec5SDimitry Andric template <class _Dp, bool _IC> friend typename __bit_iterator<_Dp, _IC>::difference_type 13140b57cec5SDimitry Andric __count_bool_true(__bit_iterator<_Dp, _IC>, typename _Dp::size_type); 13150b57cec5SDimitry Andric template <class _Dp, bool _IC> friend typename __bit_iterator<_Dp, _IC>::difference_type 13160b57cec5SDimitry Andric __count_bool_false(__bit_iterator<_Dp, _IC>, typename _Dp::size_type); 13170b57cec5SDimitry Andric}; 13180b57cec5SDimitry Andric 13190b57cec5SDimitry Andric_LIBCPP_END_NAMESPACE_STD 13200b57cec5SDimitry Andric 13210b57cec5SDimitry Andric_LIBCPP_POP_MACROS 13220b57cec5SDimitry Andric 13230b57cec5SDimitry Andric#endif // _LIBCPP___BIT_REFERENCE 1324