The C and C++ Include Header Files

/usr/include/c++/11/ext/rb_tree


$ cat -n /usr/include/c++/11/ext/rb_tree

     1	// rb_tree extension -*- C++ -*-
     2	
     3	// Copyright (C) 2002-2021 Free Software Foundation, Inc.
     4	//
     5	// This file is part of the GNU ISO C++ Library.  This library is free
     6	// software; you can redistribute it and/or modify it under the
     7	// terms of the GNU General Public License as published by the
     8	// Free Software Foundation; either version 3, or (at your option)
     9	// any later version.
    10	
    11	// This library is distributed in the hope that it will be useful,
    12	// but WITHOUT ANY WARRANTY; without even the implied warranty of
    13	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    14	// GNU General Public License for more details.
    15	
    16	// Under Section 7 of GPL version 3, you are granted additional
    17	// permissions described in the GCC Runtime Library Exception, version
    18	// 3.1, as published by the Free Software Foundation.
    19	
    20	// You should have received a copy of the GNU General Public License and
    21	// a copy of the GCC Runtime Library Exception along with this program;
    22	// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    23	// <http://www.gnu.org/licenses/>.
    24	
    25	/*
    26	 *
    27	 * Copyright (c) 1994
    28	 * Hewlett-Packard Company
    29	 *
    30	 * Permission to use, copy, modify, distribute and sell this software
    31	 * and its documentation for any purpose is hereby granted without fee,
    32	 * provided that the above copyright notice appear in all copies and
    33	 * that both that copyright notice and this permission notice appear
    34	 * in supporting documentation.  Hewlett-Packard Company makes no
    35	 * representations about the suitability of this software for any
    36	 * purpose.  It is provided "as is" without express or implied warranty.
    37	 *
    38	 *
    39	 * Copyright (c) 1996
    40	 * Silicon Graphics Computer Systems, Inc.
    41	 *
    42	 * Permission to use, copy, modify, distribute and sell this software
    43	 * and its documentation for any purpose is hereby granted without fee,
    44	 * provided that the above copyright notice appear in all copies and
    45	 * that both that copyright notice and this permission notice appear
    46	 * in supporting documentation.  Silicon Graphics makes no
    47	 * representations about the suitability of this software for any
    48	 * purpose.  It is provided "as is" without express or implied warranty.
    49	 */
    50	
    51	/** @file ext/rb_tree
    52	 *  This file is a GNU extension to the Standard C++ Library (possibly
    53	 *  containing extensions from the HP/SGI STL subset). 
    54	 */
    55	
    56	#ifndef _RB_TREE
    57	#define _RB_TREE 1
    58	
    59	#pragma GCC system_header
    60	
    61	#include <bits/stl_tree.h>
    62	
    63	namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
    64	{
    65	_GLIBCXX_BEGIN_NAMESPACE_VERSION
    66	
    67	  // Class rb_tree is not part of the C++ standard.  It is provided for
    68	  // compatibility with the HP STL.
    69	
    70	  /**
    71	   *  This is an SGI extension.
    72	   *  @ingroup SGIextensions
    73	   *  @doctodo
    74	   */
    75	  template <class _Key, class _Value, class _KeyOfValue, class _Compare,
    76		    class _Alloc = std::allocator<_Value> >
    77	    struct rb_tree
    78	    : public std::_Rb_tree<_Key, _Value, _KeyOfValue, _Compare, _Alloc>
    79	    {
    80	      typedef std::_Rb_tree<_Key, _Value, _KeyOfValue, _Compare, _Alloc> _Base;
    81	      typedef typename _Base::allocator_type allocator_type;
    82	
    83	      rb_tree(const _Compare& __comp = _Compare(),
    84		      const allocator_type& __a = allocator_type())
    85	      : _Base(__comp, __a) { }
    86	
    87	      ~rb_tree() { }
    88	    };
    89	
    90	_GLIBCXX_END_NAMESPACE_VERSION
    91	} // namespace
    92	
    93	#endif