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📄 algorithm	19,290 B	[ EDIT ] \| [ DEL ]
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📄 alloc_traits.h	5,702 B	[ EDIT ] \| [ DEL ]
📄 array_allocator.h	5,386 B	[ EDIT ] \| [ DEL ]
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📄 cmath	6,570 B	[ EDIT ] \| [ DEL ]
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📄 iterator	4,031 B	[ EDIT ] \| [ DEL ]
📄 malloc_allocator.h	5,086 B	[ EDIT ] \| [ DEL ]
📄 memory	7,156 B	[ EDIT ] \| [ DEL ]
📄 mt_allocator.h	23,507 B	[ EDIT ] \| [ DEL ]
📄 new_allocator.h	4,805 B	[ EDIT ] \| [ DEL ]
📄 numeric	4,731 B	[ EDIT ] \| [ DEL ]
📄 numeric_traits.h	4,575 B	[ EDIT ] \| [ DEL ]
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📄 vstring.tcc	23,614 B	[ EDIT ] \| [ DEL ]
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EDIT: new_allocator.h

// Allocator that wraps operator new -*- C++ -*-

// Copyright (C) 2001-2018 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// <http://www.gnu.org/licenses/>.

/** @file ext/new_allocator.h
 *  This file is a GNU extension to the Standard C++ Library.
 */

#ifndef _NEW_ALLOCATOR_H
#define _NEW_ALLOCATOR_H 1

#include <bits/c++config.h>
#include <new>
#include <bits/functexcept.h>
#include <bits/move.h>
#if __cplusplus >= 201103L
#include <type_traits>
#endif

namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

using std::size_t;
  using std::ptrdiff_t;

/**
   *  @brief  An allocator that uses global new, as per [20.4].
   *  @ingroup allocators
   *
   *  This is precisely the allocator defined in the C++ Standard.
   *    - all allocation calls operator new
   *    - all deallocation calls operator delete
   *
   *  @tparam  _Tp  Type of allocated object.
   */
  template<typename _Tp>
    class new_allocator
    {
    public:
      typedef size_t     size_type;
      typedef ptrdiff_t  difference_type;
      typedef _Tp*       pointer;
      typedef const _Tp* const_pointer;
      typedef _Tp&       reference;
      typedef const _Tp& const_reference;
      typedef _Tp        value_type;

template<typename _Tp1>
	struct rebind
	{ typedef new_allocator<_Tp1> other; };

#if __cplusplus >= 201103L
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 2103. propagate_on_container_move_assignment
      typedef std::true_type propagate_on_container_move_assignment;
#endif

new_allocator() _GLIBCXX_USE_NOEXCEPT { }

new_allocator(const new_allocator&) _GLIBCXX_USE_NOEXCEPT { }

template<typename _Tp1>
	new_allocator(const new_allocator<_Tp1>&) _GLIBCXX_USE_NOEXCEPT { }

~new_allocator() _GLIBCXX_USE_NOEXCEPT { }

pointer
      address(reference __x) const _GLIBCXX_NOEXCEPT
      { return std::__addressof(__x); }

const_pointer
      address(const_reference __x) const _GLIBCXX_NOEXCEPT
      { return std::__addressof(__x); }

// NB: __n is permitted to be 0.  The C++ standard says nothing
      // about what the return value is when __n == 0.
      pointer
      allocate(size_type __n, const void* = static_cast<const void*>(0))
      {
	if (__n > this->max_size())
	  std::__throw_bad_alloc();

#if __cpp_aligned_new
	if (alignof(_Tp) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
	  {
	    std::align_val_t __al = std::align_val_t(alignof(_Tp));
	    return static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), __al));
	  }
#endif
	return static_cast<_Tp*>(::operator new(__n * sizeof(_Tp)));
      }

// __p is not permitted to be a null pointer.
      void
      deallocate(pointer __p, size_type)
      {
#if __cpp_aligned_new
	if (alignof(_Tp) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
	  {
	    ::operator delete(__p, std::align_val_t(alignof(_Tp)));
	    return;
	  }
#endif
	::operator delete(__p);
      }

size_type
      max_size() const _GLIBCXX_USE_NOEXCEPT
      { return size_t(-1) / sizeof(_Tp); }

#if __cplusplus >= 201103L
      template<typename _Up, typename... _Args>
	void
	construct(_Up* __p, _Args&&... __args)
	{ ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }

template<typename _Up>
	void
	destroy(_Up* __p) { __p->~_Up(); }
#else
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 402. wrong new expression in [some_] allocator::construct
      void
      construct(pointer __p, const _Tp& __val)
      { ::new((void *)__p) _Tp(__val); }

void
      destroy(pointer __p) { __p->~_Tp(); }
#endif
    };

template<typename _Tp>
    inline bool
    operator==(const new_allocator<_Tp>&, const new_allocator<_Tp>&)
    { return true; }

template<typename _Tp>
    inline bool
    operator!=(const new_allocator<_Tp>&, const new_allocator<_Tp>&)
    { return false; }

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace

#endif