705debec1e
2004-08-09 Paolo Carlini <pcarlini@suse.de> * include/bits/stl_bvector.h: Trivial formatting fixes. 2004-08-09 Paolo Carlini <pcarlini@suse.de> * src/ios.cc (ios_base::_M_grow_words): Uglify the names. From-SVN: r85716
945 lines
24 KiB
C++
945 lines
24 KiB
C++
// vector<bool> specialization -*- C++ -*-
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// Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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/*
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Hewlett-Packard Company makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*
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* Copyright (c) 1996-1999
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* Silicon Graphics Computer Systems, Inc.
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Silicon Graphics makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*/
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/** @file stl_bvector.h
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* This is an internal header file, included by other library headers.
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* You should not attempt to use it directly.
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*/
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#ifndef _BVECTOR_H
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#define _BVECTOR_H 1
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namespace _GLIBCXX_STD
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{
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typedef unsigned long _Bit_type;
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enum { _S_word_bit = int(CHAR_BIT * sizeof(_Bit_type)) };
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struct _Bit_reference
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{
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_Bit_type * _M_p;
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_Bit_type _M_mask;
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_Bit_reference(_Bit_type * __x, _Bit_type __y)
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: _M_p(__x), _M_mask(__y) { }
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_Bit_reference() : _M_p(0), _M_mask(0) { }
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operator bool() const
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{ return !!(*_M_p & _M_mask); }
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_Bit_reference&
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operator=(bool __x)
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{
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if (__x)
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*_M_p |= _M_mask;
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else
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*_M_p &= ~_M_mask;
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return *this;
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}
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_Bit_reference&
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operator=(const _Bit_reference& __x)
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{ return *this = bool(__x); }
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bool
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operator==(const _Bit_reference& __x) const
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{ return bool(*this) == bool(__x); }
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bool
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operator<(const _Bit_reference& __x) const
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{ return !bool(*this) && bool(__x); }
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void
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flip()
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{ *_M_p ^= _M_mask; }
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};
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struct _Bit_iterator_base : public iterator<random_access_iterator_tag, bool>
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{
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_Bit_type * _M_p;
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unsigned int _M_offset;
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_Bit_iterator_base(_Bit_type * __x, unsigned int __y)
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: _M_p(__x), _M_offset(__y) { }
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void
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_M_bump_up()
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{
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if (_M_offset++ == _S_word_bit - 1)
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{
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_M_offset = 0;
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++_M_p;
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}
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}
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void
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_M_bump_down()
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{
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if (_M_offset-- == 0)
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{
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_M_offset = _S_word_bit - 1;
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--_M_p;
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}
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}
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void
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_M_incr(ptrdiff_t __i)
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{
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difference_type __n = __i + _M_offset;
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_M_p += __n / _S_word_bit;
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__n = __n % _S_word_bit;
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if (__n < 0)
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{
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_M_offset = static_cast<unsigned int>(__n + _S_word_bit);
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--_M_p;
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}
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else
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_M_offset = static_cast<unsigned int>(__n);
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}
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bool
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operator==(const _Bit_iterator_base& __i) const
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{ return _M_p == __i._M_p && _M_offset == __i._M_offset; }
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bool
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operator<(const _Bit_iterator_base& __i) const
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{
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return _M_p < __i._M_p
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|| (_M_p == __i._M_p && _M_offset < __i._M_offset);
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}
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bool
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operator!=(const _Bit_iterator_base& __i) const
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{ return !(*this == __i); }
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bool
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operator>(const _Bit_iterator_base& __i) const
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{ return __i < *this; }
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bool
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operator<=(const _Bit_iterator_base& __i) const
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{ return !(__i < *this); }
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bool
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operator>=(const _Bit_iterator_base& __i) const
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{ return !(*this < __i); }
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};
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inline ptrdiff_t
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operator-(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y)
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{
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return _S_word_bit * (__x._M_p - __y._M_p) + __x._M_offset - __y._M_offset;
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}
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struct _Bit_iterator : public _Bit_iterator_base
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{
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typedef _Bit_reference reference;
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typedef _Bit_reference* pointer;
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typedef _Bit_iterator iterator;
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_Bit_iterator() : _Bit_iterator_base(0, 0) { }
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_Bit_iterator(_Bit_type * __x, unsigned int __y)
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: _Bit_iterator_base(__x, __y) { }
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reference
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operator*() const
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{ return reference(_M_p, 1UL << _M_offset); }
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iterator&
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operator++()
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{
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_M_bump_up();
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return *this;
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}
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iterator
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operator++(int)
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{
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iterator __tmp = *this;
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_M_bump_up();
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return __tmp;
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}
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iterator&
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operator--()
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{
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_M_bump_down();
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return *this;
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}
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iterator
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operator--(int)
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{
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iterator __tmp = *this;
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_M_bump_down();
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return __tmp;
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}
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iterator&
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operator+=(difference_type __i)
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{
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_M_incr(__i);
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return *this;
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}
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iterator&
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operator-=(difference_type __i)
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{
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*this += -__i;
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return *this;
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}
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iterator
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operator+(difference_type __i) const
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{
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iterator __tmp = *this;
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return __tmp += __i;
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}
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iterator
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operator-(difference_type __i) const
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{
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iterator __tmp = *this;
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return __tmp -= __i;
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}
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reference
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operator[](difference_type __i)
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{ return *(*this + __i); }
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};
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inline _Bit_iterator
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operator+(ptrdiff_t __n, const _Bit_iterator& __x)
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{ return __x + __n; }
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struct _Bit_const_iterator : public _Bit_iterator_base
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{
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typedef bool reference;
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typedef bool const_reference;
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typedef const bool* pointer;
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typedef _Bit_const_iterator const_iterator;
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_Bit_const_iterator() : _Bit_iterator_base(0, 0) { }
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_Bit_const_iterator(_Bit_type * __x, unsigned int __y)
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: _Bit_iterator_base(__x, __y) { }
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_Bit_const_iterator(const _Bit_iterator& __x)
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: _Bit_iterator_base(__x._M_p, __x._M_offset) { }
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const_reference
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operator*() const
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{ return _Bit_reference(_M_p, 1UL << _M_offset); }
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const_iterator&
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operator++()
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{
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_M_bump_up();
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return *this;
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}
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const_iterator
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operator++(int)
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{
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const_iterator __tmp = *this;
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_M_bump_up();
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return __tmp;
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}
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const_iterator&
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operator--()
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{
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_M_bump_down();
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return *this;
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}
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const_iterator
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operator--(int)
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{
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const_iterator __tmp = *this;
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_M_bump_down();
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return __tmp;
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}
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const_iterator&
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operator+=(difference_type __i)
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{
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_M_incr(__i);
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return *this;
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}
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const_iterator&
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operator-=(difference_type __i)
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{
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*this += -__i;
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return *this;
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}
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const_iterator
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operator+(difference_type __i) const
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{
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const_iterator __tmp = *this;
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return __tmp += __i;
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}
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const_iterator
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operator-(difference_type __i) const
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{
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const_iterator __tmp = *this;
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return __tmp -= __i;
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}
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const_reference
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operator[](difference_type __i)
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{ return *(*this + __i); }
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};
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inline _Bit_const_iterator
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operator+(ptrdiff_t __n, const _Bit_const_iterator& __x)
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{ return __x + __n; }
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template<class _Alloc>
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class _Bvector_base
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{
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typedef typename _Alloc::template rebind<_Bit_type>::other
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_Bit_alloc_type;
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struct _Bvector_impl : public _Bit_alloc_type
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{
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_Bit_iterator _M_start;
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_Bit_iterator _M_finish;
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_Bit_type* _M_end_of_storage;
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_Bvector_impl(const _Bit_alloc_type& __a)
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: _Bit_alloc_type(__a), _M_start(), _M_finish(), _M_end_of_storage(0)
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{ }
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};
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public:
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typedef _Alloc allocator_type;
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allocator_type
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get_allocator() const
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{ return *static_cast<const _Bit_alloc_type*>(&this->_M_impl); }
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_Bvector_base(const allocator_type& __a) : _M_impl(__a) { }
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~_Bvector_base()
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{ this->_M_deallocate(); }
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protected:
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_Bvector_impl _M_impl;
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_Bit_type*
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_M_allocate(size_t __n)
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{ return _M_impl.allocate((__n + _S_word_bit - 1) / _S_word_bit); }
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void
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_M_deallocate()
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{
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if (_M_impl._M_start._M_p)
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_M_impl.deallocate(_M_impl._M_start._M_p,
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_M_impl._M_end_of_storage - _M_impl._M_start._M_p);
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}
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};
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} // namespace std
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// Declare a partial specialization of vector<T, Alloc>.
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#include <bits/stl_vector.h>
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namespace _GLIBCXX_STD
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{
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/**
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* @brief A specialization of vector for booleans which offers fixed time
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* access to individual elements in any order.
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*
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* Note that vector<bool> does not actually meet the requirements for being
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* a container. This is because the reference and pointer types are not
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* really references and pointers to bool. See DR96 for details. @see
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* vector for function documentation.
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*
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* @ingroup Containers
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* @ingroup Sequences
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*
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* In some terminology a %vector can be described as a dynamic
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* C-style array, it offers fast and efficient access to individual
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* elements in any order and saves the user from worrying about
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* memory and size allocation. Subscripting ( @c [] ) access is
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* also provided as with C-style arrays.
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*/
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template<typename _Alloc>
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class vector<bool, _Alloc> : public _Bvector_base<_Alloc>
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{
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public:
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typedef bool value_type;
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typedef size_t size_type;
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typedef ptrdiff_t difference_type;
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typedef _Bit_reference reference;
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typedef bool const_reference;
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typedef _Bit_reference* pointer;
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typedef const bool* const_pointer;
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typedef _Bit_iterator iterator;
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typedef _Bit_const_iterator const_iterator;
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typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
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typedef std::reverse_iterator<iterator> reverse_iterator;
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typedef typename _Bvector_base<_Alloc>::allocator_type allocator_type;
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allocator_type get_allocator() const
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{ return _Bvector_base<_Alloc>::get_allocator(); }
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protected:
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using _Bvector_base<_Alloc>::_M_allocate;
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using _Bvector_base<_Alloc>::_M_deallocate;
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protected:
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void
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_M_initialize(size_type __n)
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{
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_Bit_type* __q = this->_M_allocate(__n);
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this->_M_impl._M_end_of_storage = (__q
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+ ((__n + _S_word_bit - 1)
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/ _S_word_bit));
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this->_M_impl._M_start = iterator(__q, 0);
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this->_M_impl._M_finish = this->_M_impl._M_start + difference_type(__n);
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}
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void
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_M_insert_aux(iterator __position, bool __x)
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{
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if (this->_M_impl._M_finish._M_p != this->_M_impl._M_end_of_storage)
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{
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std::copy_backward(__position, this->_M_impl._M_finish,
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this->_M_impl._M_finish + 1);
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*__position = __x;
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++this->_M_impl._M_finish;
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}
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else
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{
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const size_type __len = size() ? 2 * size()
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: static_cast<size_type>(_S_word_bit);
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_Bit_type * __q = this->_M_allocate(__len);
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iterator __i = std::copy(begin(), __position, iterator(__q, 0));
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*__i++ = __x;
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this->_M_impl._M_finish = std::copy(__position, end(), __i);
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this->_M_deallocate();
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this->_M_impl._M_end_of_storage = (__q + ((__len + _S_word_bit - 1)
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/ _S_word_bit));
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this->_M_impl._M_start = iterator(__q, 0);
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}
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}
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template<class _InputIterator>
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void
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_M_initialize_range(_InputIterator __first, _InputIterator __last,
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input_iterator_tag)
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{
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this->_M_impl._M_start = iterator();
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this->_M_impl._M_finish = iterator();
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this->_M_impl._M_end_of_storage = 0;
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for (; __first != __last; ++__first)
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push_back(*__first);
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}
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template<class _ForwardIterator>
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void
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_M_initialize_range(_ForwardIterator __first, _ForwardIterator __last,
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forward_iterator_tag)
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{
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const size_type __n = std::distance(__first, __last);
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_M_initialize(__n);
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std::copy(__first, __last, this->_M_impl._M_start);
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}
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template<class _InputIterator>
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void
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_M_insert_range(iterator __pos, _InputIterator __first,
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_InputIterator __last, input_iterator_tag)
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{
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for (; __first != __last; ++__first)
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{
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__pos = insert(__pos, *__first);
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++__pos;
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}
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}
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template<class _ForwardIterator>
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void
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_M_insert_range(iterator __position, _ForwardIterator __first,
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_ForwardIterator __last, forward_iterator_tag)
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{
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if (__first != __last)
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{
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size_type __n = std::distance(__first, __last);
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if (capacity() - size() >= __n)
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{
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std::copy_backward(__position, end(),
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this->_M_impl._M_finish
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+ difference_type(__n));
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std::copy(__first, __last, __position);
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this->_M_impl._M_finish += difference_type(__n);
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}
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else
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{
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const size_type __len = size() + std::max(size(), __n);
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_Bit_type * __q = this->_M_allocate(__len);
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iterator __i = std::copy(begin(), __position,
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iterator(__q, 0));
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__i = std::copy(__first, __last, __i);
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this->_M_impl._M_finish = std::copy(__position, end(), __i);
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this->_M_deallocate();
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this->_M_impl._M_end_of_storage = (__q
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+ ((__len + _S_word_bit - 1)
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/ _S_word_bit));
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this->_M_impl._M_start = iterator(__q, 0);
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}
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}
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}
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public:
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iterator
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begin()
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{ return this->_M_impl._M_start; }
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const_iterator
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begin() const
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{ return this->_M_impl._M_start; }
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iterator
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end()
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{ return this->_M_impl._M_finish; }
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const_iterator
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end() const
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{ return this->_M_impl._M_finish; }
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reverse_iterator
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rbegin()
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{ return reverse_iterator(end()); }
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const_reverse_iterator
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rbegin() const
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{ return const_reverse_iterator(end()); }
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reverse_iterator
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rend()
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{ return reverse_iterator(begin()); }
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const_reverse_iterator
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rend() const
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{ return const_reverse_iterator(begin()); }
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size_type
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size() const
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{ return size_type(end() - begin()); }
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size_type
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max_size() const
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{ return size_type(-1); }
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size_type
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capacity() const
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{ return size_type(const_iterator(this->_M_impl._M_end_of_storage, 0)
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- begin()); }
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bool
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empty() const
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{ return begin() == end(); }
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reference
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operator[](size_type __n)
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{ return *(begin() + difference_type(__n)); }
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const_reference
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operator[](size_type __n) const
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{ return *(begin() + difference_type(__n)); }
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void
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_M_range_check(size_type __n) const
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{
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if (__n >= this->size())
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__throw_out_of_range(__N("vector<bool>::_M_range_check"));
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}
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reference
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at(size_type __n)
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{ _M_range_check(__n); return (*this)[__n]; }
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const_reference
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at(size_type __n) const
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{ _M_range_check(__n); return (*this)[__n]; }
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explicit
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vector(const allocator_type& __a = allocator_type())
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: _Bvector_base<_Alloc>(__a) { }
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vector(size_type __n, bool __value,
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const allocator_type& __a = allocator_type())
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: _Bvector_base<_Alloc>(__a)
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{
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_M_initialize(__n);
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std::fill(this->_M_impl._M_start._M_p, this->_M_impl._M_end_of_storage,
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__value ? ~0 : 0);
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}
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explicit
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vector(size_type __n)
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: _Bvector_base<_Alloc>(allocator_type())
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{
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_M_initialize(__n);
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std::fill(this->_M_impl._M_start._M_p,
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this->_M_impl._M_end_of_storage, 0);
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}
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vector(const vector& __x)
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: _Bvector_base<_Alloc>(__x.get_allocator())
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{
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_M_initialize(__x.size());
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std::copy(__x.begin(), __x.end(), this->_M_impl._M_start);
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}
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// Check whether it's an integral type. If so, it's not an iterator.
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template<class _Integer>
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void
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_M_initialize_dispatch(_Integer __n, _Integer __x, __true_type)
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{
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_M_initialize(__n);
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std::fill(this->_M_impl._M_start._M_p,
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this->_M_impl._M_end_of_storage, __x ? ~0 : 0);
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}
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template<class _InputIterator>
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void
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_M_initialize_dispatch(_InputIterator __first, _InputIterator __last,
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__false_type)
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{ _M_initialize_range(__first, __last,
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std::__iterator_category(__first)); }
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template<class _InputIterator>
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vector(_InputIterator __first, _InputIterator __last,
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const allocator_type& __a = allocator_type())
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: _Bvector_base<_Alloc>(__a)
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{
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typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
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_M_initialize_dispatch(__first, __last, _Integral());
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}
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~vector() { }
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vector&
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operator=(const vector& __x)
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{
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if (&__x == this)
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return *this;
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if (__x.size() > capacity())
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{
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this->_M_deallocate();
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_M_initialize(__x.size());
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}
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std::copy(__x.begin(), __x.end(), begin());
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this->_M_impl._M_finish = begin() + difference_type(__x.size());
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return *this;
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}
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// assign(), a generalized assignment member function. Two
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// versions: one that takes a count, and one that takes a range.
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// The range version is a member template, so we dispatch on whether
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// or not the type is an integer.
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void
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_M_fill_assign(size_t __n, bool __x)
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{
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if (__n > size())
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{
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std::fill(this->_M_impl._M_start._M_p,
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this->_M_impl._M_end_of_storage, __x ? ~0 : 0);
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insert(end(), __n - size(), __x);
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}
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else
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{
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erase(begin() + __n, end());
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std::fill(this->_M_impl._M_start._M_p,
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this->_M_impl._M_end_of_storage, __x ? ~0 : 0);
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}
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}
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void
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assign(size_t __n, bool __x)
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{ _M_fill_assign(__n, __x); }
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template<class _InputIterator>
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void
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assign(_InputIterator __first, _InputIterator __last)
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{
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typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
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_M_assign_dispatch(__first, __last, _Integral());
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}
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template<class _Integer>
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void
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_M_assign_dispatch(_Integer __n, _Integer __val, __true_type)
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{ _M_fill_assign((size_t) __n, (bool) __val); }
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template<class _InputIterator>
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void
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_M_assign_dispatch(_InputIterator __first, _InputIterator __last,
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__false_type)
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{ _M_assign_aux(__first, __last, std::__iterator_category(__first)); }
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template<class _InputIterator>
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void
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_M_assign_aux(_InputIterator __first, _InputIterator __last,
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input_iterator_tag)
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{
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iterator __cur = begin();
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for (; __first != __last && __cur != end(); ++__cur, ++__first)
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*__cur = *__first;
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if (__first == __last)
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erase(__cur, end());
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else
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insert(end(), __first, __last);
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}
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template<class _ForwardIterator>
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void
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_M_assign_aux(_ForwardIterator __first, _ForwardIterator __last,
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forward_iterator_tag)
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{
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const size_type __len = std::distance(__first, __last);
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if (__len < size())
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erase(std::copy(__first, __last, begin()), end());
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else
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{
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_ForwardIterator __mid = __first;
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std::advance(__mid, size());
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std::copy(__first, __mid, begin());
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insert(end(), __mid, __last);
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}
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}
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void
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reserve(size_type __n)
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{
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if (__n > this->max_size())
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__throw_length_error(__N("vector::reserve"));
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if (this->capacity() < __n)
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{
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_Bit_type* __q = this->_M_allocate(__n);
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this->_M_impl._M_finish = std::copy(begin(), end(),
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iterator(__q, 0));
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this->_M_deallocate();
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this->_M_impl._M_start = iterator(__q, 0);
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this->_M_impl._M_end_of_storage = (__q + (__n + _S_word_bit - 1)
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/ _S_word_bit);
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}
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}
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reference
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front()
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{ return *begin(); }
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const_reference
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front() const
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{ return *begin(); }
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reference
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back()
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{ return *(end() - 1); }
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const_reference
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back() const
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{ return *(end() - 1); }
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void
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push_back(bool __x)
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{
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if (this->_M_impl._M_finish._M_p != this->_M_impl._M_end_of_storage)
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*this->_M_impl._M_finish++ = __x;
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else
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_M_insert_aux(end(), __x);
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}
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void
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swap(vector<bool, _Alloc>& __x)
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{
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std::swap(this->_M_impl._M_start, __x._M_impl._M_start);
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std::swap(this->_M_impl._M_finish, __x._M_impl._M_finish);
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std::swap(this->_M_impl._M_end_of_storage,
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__x._M_impl._M_end_of_storage);
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}
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// [23.2.5]/1, third-to-last entry in synopsis listing
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static void
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swap(reference __x, reference __y)
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{
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bool __tmp = __x;
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__x = __y;
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__y = __tmp;
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}
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iterator
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insert(iterator __position, bool __x = bool())
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{
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const difference_type __n = __position - begin();
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if (this->_M_impl._M_finish._M_p != this->_M_impl._M_end_of_storage
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&& __position == end())
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*this->_M_impl._M_finish++ = __x;
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else
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_M_insert_aux(__position, __x);
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return begin() + __n;
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}
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// Check whether it's an integral type. If so, it's not an iterator.
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template<class _Integer>
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void
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_M_insert_dispatch(iterator __pos, _Integer __n, _Integer __x,
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__true_type)
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{ _M_fill_insert(__pos, __n, __x); }
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template<class _InputIterator>
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void
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_M_insert_dispatch(iterator __pos,
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_InputIterator __first, _InputIterator __last,
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__false_type)
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{ _M_insert_range(__pos, __first, __last,
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std::__iterator_category(__first)); }
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template<class _InputIterator>
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void
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insert(iterator __position,
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_InputIterator __first, _InputIterator __last)
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{
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typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
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_M_insert_dispatch(__position, __first, __last, _Integral());
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}
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void
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_M_fill_insert(iterator __position, size_type __n, bool __x)
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{
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if (__n == 0)
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return;
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if (capacity() - size() >= __n)
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{
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std::copy_backward(__position, end(),
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this->_M_impl._M_finish + difference_type(__n));
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std::fill(__position, __position + difference_type(__n), __x);
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this->_M_impl._M_finish += difference_type(__n);
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}
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else
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{
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const size_type __len = size() + std::max(size(), __n);
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_Bit_type * __q = this->_M_allocate(__len);
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iterator __i = std::copy(begin(), __position, iterator(__q, 0));
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std::fill_n(__i, __n, __x);
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this->_M_impl._M_finish = std::copy(__position, end(),
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__i + difference_type(__n));
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this->_M_deallocate();
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this->_M_impl._M_end_of_storage = (__q + ((__len + _S_word_bit - 1)
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/ _S_word_bit));
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this->_M_impl._M_start = iterator(__q, 0);
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}
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}
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void
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insert(iterator __position, size_type __n, bool __x)
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{ _M_fill_insert(__position, __n, __x); }
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void
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pop_back()
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{ --this->_M_impl._M_finish; }
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|
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iterator
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erase(iterator __position)
|
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{
|
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if (__position + 1 != end())
|
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std::copy(__position + 1, end(), __position);
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--this->_M_impl._M_finish;
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return __position;
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}
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iterator
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erase(iterator __first, iterator __last)
|
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{
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this->_M_impl._M_finish = std::copy(__last, end(), __first);
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return __first;
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}
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|
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void
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resize(size_type __new_size, bool __x = bool())
|
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{
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if (__new_size < size())
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erase(begin() + difference_type(__new_size), end());
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else
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insert(end(), __new_size - size(), __x);
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}
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|
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void
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flip()
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{
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for (_Bit_type * __p = this->_M_impl._M_start._M_p;
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__p != this->_M_impl._M_end_of_storage; ++__p)
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*__p = ~*__p;
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}
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|
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void
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clear()
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{ erase(begin(), end()); }
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};
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} // namespace std
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#endif
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