The C and C++ Include Header Files

/usr/include/c++/11/algorithm


$ cat -n /usr/include/c++/11/algorithm

     1	// <algorithm> -*- C++ -*-
     2	
     3	// Copyright (C) 2001-2021 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) 1996,1997
    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 include/algorithm
    52	 *  This is a Standard C++ Library header.
    53	 */
    54	
    55	#ifndef _GLIBCXX_ALGORITHM
    56	#define _GLIBCXX_ALGORITHM 1
    57	
    58	#pragma GCC system_header
    59	
    60	#include <utility> // UK-300.
    61	#include <bits/stl_algobase.h>
    62	#include <bits/stl_algo.h>
    63	#if __cplusplus > 201703L
    64	# include <bits/ranges_algo.h>
    65	#endif
    66	
    67	#if __cplusplus > 201402L
    68	// Parallel STL algorithms
    69	# if _PSTL_EXECUTION_POLICIES_DEFINED
    70	// If <execution> has already been included, pull in implementations
    71	#  include <pstl/glue_algorithm_impl.h>
    72	#  else
    73	// Otherwise just pull in forward declarations
    74	#    include <pstl/glue_algorithm_defs.h>
    75	#    define _PSTL_ALGORITHM_FORWARD_DECLARED 1
    76	#  endif
    77	
    78	// Feature test macro for parallel algorithms
    79	# define __cpp_lib_parallel_algorithm 201603L
    80	#endif // C++17
    81	
    82	#ifdef _GLIBCXX_PARALLEL
    83	# include <parallel/algorithm>
    84	#endif
    85	
    86	#endif /* _GLIBCXX_ALGORITHM */