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Name	Size	Permission	Date
backward	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
bits	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
debug	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
decimal	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
experimental	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
ext	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
parallel	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
pstl	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
tr1	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
tr2	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
x86_64-redhat-linux	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
algorithm	3.31 KB	-rw-r--r--	2025-11-11 11:26
any	18.71 KB	-rw-r--r--	2025-11-11 11:26
array	15.4 KB	-rw-r--r--	2025-11-11 11:26
atomic	51.16 KB	-rw-r--r--	2025-11-11 11:26
barrier	7.87 KB	-rw-r--r--	2025-11-11 11:26
bit	14 KB	-rw-r--r--	2025-11-11 11:26
bitset	49.19 KB	-rw-r--r--	2025-11-11 11:26
cassert	1.61 KB	-rw-r--r--	2025-11-11 11:26
ccomplex	1.3 KB	-rw-r--r--	2025-11-11 11:26
cctype	2.34 KB	-rw-r--r--	2025-11-11 11:26
cerrno	1.73 KB	-rw-r--r--	2025-11-11 11:26
cfenv	2 KB	-rw-r--r--	2025-11-11 11:26
cfloat	1.84 KB	-rw-r--r--	2025-11-11 11:26
charconv	29.13 KB	-rw-r--r--	2025-11-11 11:26
chrono	94.45 KB	-rw-r--r--	2025-11-11 11:26
cinttypes	2.09 KB	-rw-r--r--	2025-11-11 11:26
ciso646	1.43 KB	-rw-r--r--	2025-11-11 11:26
climits	1.87 KB	-rw-r--r--	2025-11-11 11:26
clocale	1.86 KB	-rw-r--r--	2025-11-11 11:26
cmath	94.84 KB	-rw-r--r--	2025-11-11 11:26
codecvt	5.15 KB	-rw-r--r--	2025-11-11 11:26
compare	37.25 KB	-rw-r--r--	2025-11-11 11:26
complex	74.84 KB	-rw-r--r--	2025-11-11 11:26
complex.h	1.56 KB	-rw-r--r--	2025-11-11 11:26
concepts	12.72 KB	-rw-r--r--	2025-11-11 11:26
condition_variable	12.59 KB	-rw-r--r--	2025-11-11 11:26
coroutine	9.39 KB	-rw-r--r--	2025-11-11 11:26
csetjmp	1.9 KB	-rw-r--r--	2025-11-11 11:26
csignal	1.81 KB	-rw-r--r--	2025-11-11 11:26
cstdalign	1.37 KB	-rw-r--r--	2025-11-11 11:26
cstdarg	1.82 KB	-rw-r--r--	2025-11-11 11:26
cstdbool	1.37 KB	-rw-r--r--	2025-11-11 11:26
cstddef	6.54 KB	-rw-r--r--	2025-11-11 11:26
cstdint	3.75 KB	-rw-r--r--	2025-11-11 11:26
cstdio	4.33 KB	-rw-r--r--	2025-11-11 11:26
cstdlib	6.66 KB	-rw-r--r--	2025-11-11 11:26
cstring	3.17 KB	-rw-r--r--	2025-11-11 11:26
ctgmath	1.33 KB	-rw-r--r--	2025-11-11 11:26
ctime	2.24 KB	-rw-r--r--	2025-11-11 11:26
cuchar	2.84 KB	-rw-r--r--	2025-11-11 11:26
cwchar	6.39 KB	-rw-r--r--	2025-11-11 11:26
cwctype	2.73 KB	-rw-r--r--	2025-11-11 11:26
cxxabi.h	21.77 KB	-rw-r--r--	2025-11-11 11:26
deque	4.56 KB	-rw-r--r--	2025-11-11 11:26
exception	5.31 KB	-rw-r--r--	2025-11-11 11:26
execution	1.87 KB	-rw-r--r--	2025-11-11 11:26
expected	49.81 KB	-rw-r--r--	2025-11-11 11:26
fenv.h	1.96 KB	-rw-r--r--	2025-11-11 11:26
filesystem	1.72 KB	-rw-r--r--	2025-11-11 11:26
format	128.31 KB	-rw-r--r--	2025-11-11 11:26
forward_list	2.91 KB	-rw-r--r--	2025-11-11 11:26
fstream	41.58 KB	-rw-r--r--	2025-11-11 11:26
functional	47.31 KB	-rw-r--r--	2025-11-11 11:26
future	52.04 KB	-rw-r--r--	2025-11-11 11:26
generator	22.16 KB	-rw-r--r--	2025-11-11 11:26
initializer_list	2.93 KB	-rw-r--r--	2025-11-11 11:26
iomanip	16.4 KB	-rw-r--r--	2025-11-11 11:26
ios	1.67 KB	-rw-r--r--	2025-11-11 11:26
iosfwd	8.21 KB	-rw-r--r--	2025-11-11 11:26
iostream	3.02 KB	-rw-r--r--	2025-11-11 11:26
istream	35.52 KB	-rw-r--r--	2025-11-11 11:26
iterator	3.02 KB	-rw-r--r--	2025-11-11 11:26
latch	2.7 KB	-rw-r--r--	2025-11-11 11:26
limits	82.01 KB	-rw-r--r--	2025-11-11 11:26
list	3.86 KB	-rw-r--r--	2025-11-11 11:26
locale	1.5 KB	-rw-r--r--	2025-11-11 11:26
map	4.37 KB	-rw-r--r--	2025-11-11 11:26
math.h	4.47 KB	-rw-r--r--	2025-11-11 11:26
memory	5.26 KB	-rw-r--r--	2025-11-11 11:26
memory_resource	14.15 KB	-rw-r--r--	2025-11-11 11:26
mutex	26.99 KB	-rw-r--r--	2025-11-11 11:26
new	8.48 KB	-rw-r--r--	2025-11-11 11:26
numbers	6.91 KB	-rw-r--r--	2025-11-11 11:26
numeric	25.5 KB	-rw-r--r--	2025-11-11 11:26
optional	44.03 KB	-rw-r--r--	2025-11-11 11:26
ostream	30.45 KB	-rw-r--r--	2025-11-11 11:26
print	4.73 KB	-rw-r--r--	2025-11-11 11:26
queue	2.54 KB	-rw-r--r--	2025-11-11 11:26
random	1.63 KB	-rw-r--r--	2025-11-11 11:26
ranges	271.83 KB	-rw-r--r--	2025-11-11 11:26
ratio	22.26 KB	-rw-r--r--	2025-11-11 11:26
regex	3.16 KB	-rw-r--r--	2025-11-11 11:26
scoped_allocator	17.41 KB	-rw-r--r--	2025-11-11 11:26
semaphore	3.04 KB	-rw-r--r--	2025-11-11 11:26
set	4.16 KB	-rw-r--r--	2025-11-11 11:26
shared_mutex	24.6 KB	-rw-r--r--	2025-11-11 11:26
source_location	2.7 KB	-rw-r--r--	2025-11-11 11:26
span	14.12 KB	-rw-r--r--	2025-11-11 11:26
spanstream	12.2 KB	-rw-r--r--	2025-11-11 11:26
sstream	38.83 KB	-rw-r--r--	2025-11-11 11:26
stack	2.46 KB	-rw-r--r--	2025-11-11 11:26
stacktrace	21.82 KB	-rw-r--r--	2025-11-11 11:26
stdatomic.h	4.02 KB	-rw-r--r--	2025-11-11 11:26
stdexcept	9.65 KB	-rw-r--r--	2025-11-11 11:26
stdfloat	1.72 KB	-rw-r--r--	2025-11-11 11:26
stdlib.h	2.25 KB	-rw-r--r--	2025-11-11 11:26
stop_token	15.72 KB	-rw-r--r--	2025-11-11 11:26
streambuf	29.24 KB	-rw-r--r--	2025-11-11 11:26
string	4.23 KB	-rw-r--r--	2025-11-11 11:26
string_view	27.46 KB	-rw-r--r--	2025-11-11 11:26
syncstream	8.18 KB	-rw-r--r--	2025-11-11 11:26
system_error	17.96 KB	-rw-r--r--	2025-11-11 11:26
text_encoding	16.26 KB	-rw-r--r--	2025-11-11 11:26
tgmath.h	1.33 KB	-rw-r--r--	2025-11-11 11:26
thread	9.77 KB	-rw-r--r--	2025-11-11 11:26
tuple	99.67 KB	-rw-r--r--	2025-11-11 11:26
type_traits	118.15 KB	-rw-r--r--	2025-11-11 11:26
typeindex	3.43 KB	-rw-r--r--	2025-11-11 11:26
typeinfo	8.1 KB	-rw-r--r--	2025-11-11 11:26
unordered_map	3.69 KB	-rw-r--r--	2025-11-11 11:26
unordered_set	3.48 KB	-rw-r--r--	2025-11-11 11:26
utility	7.38 KB	-rw-r--r--	2025-11-11 11:26
valarray	40.2 KB	-rw-r--r--	2025-11-11 11:26
variant	64.81 KB	-rw-r--r--	2025-11-11 11:26
vector	4.98 KB	-rw-r--r--	2025-11-11 11:26
version	1.42 KB	-rw-r--r--	2025-11-11 11:26

Rename

// <iosfwd> Forward declarations -*- C++ -*-

// Copyright (C) 1997-2024 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 include/iosfwd
 *  This is a Standard C++ Library header.
 */

//
// ISO C++ 14882: 27.2  Forward declarations
//

#ifndef _GLIBCXX_IOSFWD
#define _GLIBCXX_IOSFWD 1

#pragma GCC system_header

#include <bits/requires_hosted.h> // iostreams

#include <bits/c++config.h>
#include <bits/stringfwd.h> 	// For string forward declarations.
#include <bits/postypes.h>

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

/**
   *  @defgroup io I/O
   *
   *  Nearly all of the I/O classes are parameterized on the type of
   *  characters they read and write.  (The major exception is ios_base at
   *  the top of the hierarchy.)  This is a change from pre-Standard
   *  streams, which were not templates.
   *
   *  For ease of use and compatibility, all of the basic_* I/O-related
   *  classes are given typedef names for both of the builtin character
   *  widths (wide and narrow).  The typedefs are the same as the
   *  pre-Standard names, for example:
   *
   *  @code
   *     typedef basic_ifstream<char>  ifstream;
   *  @endcode
   *
   *  Because properly forward-declaring these classes can be difficult, you
   *  should not do it yourself.  Instead, include the &lt;iosfwd&gt;
   *  header, which contains only declarations of all the I/O classes as
   *  well as the typedefs.  Trying to forward-declare the typedefs
   *  themselves (e.g., <code>class ostream;</code>) is not valid ISO C++.
   *
   *  For more specific declarations, see
   *  https://gcc.gnu.org/onlinedocs/libstdc++/manual/io.html#std.io.objects
   *
   *  @{
  */
  class ios_base;

template<typename _CharT, typename _Traits = char_traits<_CharT> >
    class basic_ios;

template<typename _CharT, typename _Traits = char_traits<_CharT> >
    class basic_streambuf;

template<typename _CharT, typename _Traits = char_traits<_CharT> >
    class basic_istream;

template<typename _CharT, typename _Traits = char_traits<_CharT> >
    class basic_ostream;

template<typename _CharT, typename _Traits = char_traits<_CharT> >
    class basic_iostream;

_GLIBCXX_BEGIN_NAMESPACE_CXX11

template<typename _CharT, typename _Traits = char_traits<_CharT>,
	    typename _Alloc = allocator<_CharT> >
    class basic_stringbuf;

template<typename _CharT, typename _Traits = char_traits<_CharT>,
	   typename _Alloc = allocator<_CharT> >
    class basic_istringstream;

template<typename _CharT, typename _Traits = char_traits<_CharT>,
	   typename _Alloc = allocator<_CharT> >
    class basic_ostringstream;

template<typename _CharT, typename _Traits = char_traits<_CharT>,
	   typename _Alloc = allocator<_CharT> >
    class basic_stringstream;

_GLIBCXX_END_NAMESPACE_CXX11

template<typename _CharT, typename _Traits = char_traits<_CharT> >
    class basic_filebuf;

template<typename _CharT, typename _Traits = char_traits<_CharT> >
    class basic_ifstream;

template<typename _CharT, typename _Traits = char_traits<_CharT> >
    class basic_ofstream;

template<typename _CharT, typename _Traits = char_traits<_CharT> >
    class basic_fstream;

template<typename _CharT, typename _Traits = char_traits<_CharT> >
    class istreambuf_iterator;

template<typename _CharT, typename _Traits = char_traits<_CharT> >
    class ostreambuf_iterator;

/// Base class for @c char streams.
  typedef basic_ios<char> 		ios;

/// Base class for @c char buffers.
  typedef basic_streambuf<char> 	streambuf;

/// Base class for @c char input streams.
  typedef basic_istream<char> 		istream;

/// Base class for @c char output streams.
  typedef basic_ostream<char> 		ostream;

/// Base class for @c char mixed input and output streams.
  typedef basic_iostream<char> 		iostream;

/// Class for @c char memory buffers.
  typedef basic_stringbuf<char> 	stringbuf;

/// Class for @c char input memory streams.
  typedef basic_istringstream<char> 	istringstream;

/// Class for @c char output memory streams.
  typedef basic_ostringstream<char> 	ostringstream;

/// Class for @c char mixed input and output memory streams.
  typedef basic_stringstream<char> 	stringstream;

/// Class for @c char file buffers.
  typedef basic_filebuf<char> 		filebuf;

/// Class for @c char input file streams.
  typedef basic_ifstream<char> 		ifstream;

/// Class for @c char output file streams.
  typedef basic_ofstream<char> 		ofstream;

/// Class for @c char mixed input and output file streams.
  typedef basic_fstream<char> 		fstream;

#ifdef _GLIBCXX_USE_WCHAR_T
  /// Base class for @c wchar_t streams.
  typedef basic_ios<wchar_t> 		wios;

/// Base class for @c wchar_t buffers.
  typedef basic_streambuf<wchar_t> 	wstreambuf;

/// Base class for @c wchar_t input streams.
  typedef basic_istream<wchar_t> 	wistream;

/// Base class for @c wchar_t output streams.
  typedef basic_ostream<wchar_t> 	wostream;

/// Base class for @c wchar_t mixed input and output streams.
  typedef basic_iostream<wchar_t> 	wiostream;

/// Class for @c wchar_t memory buffers.
  typedef basic_stringbuf<wchar_t> 	wstringbuf;

/// Class for @c wchar_t input memory streams.
  typedef basic_istringstream<wchar_t> 	wistringstream;

/// Class for @c wchar_t output memory streams.
  typedef basic_ostringstream<wchar_t> 	wostringstream;

/// Class for @c wchar_t mixed input and output memory streams.
  typedef basic_stringstream<wchar_t> 	wstringstream;

/// Class for @c wchar_t file buffers.
  typedef basic_filebuf<wchar_t> 	wfilebuf;

/// Class for @c wchar_t input file streams.
  typedef basic_ifstream<wchar_t> 	wifstream;

/// Class for @c wchar_t output file streams.
  typedef basic_ofstream<wchar_t> 	wofstream;

/// Class for @c wchar_t mixed input and output file streams.
  typedef basic_fstream<wchar_t> 	wfstream;
#endif

#if __cplusplus >= 202002L && _GLIBCXX_USE_CXX11_ABI
  template<typename _CharT, typename _Traits = char_traits<_CharT>,
           typename _Allocator = allocator<_CharT>>
    class basic_syncbuf;
  template<typename _CharT, typename _Traits = char_traits<_CharT>,
           typename _Allocator = allocator<_CharT>>
    class basic_osyncstream;

using syncbuf = basic_syncbuf<char>;
  using osyncstream = basic_osyncstream<char>;

#ifdef _GLIBCXX_USE_WCHAR_T
  using wsyncbuf = basic_syncbuf<wchar_t>;
  using wosyncstream = basic_osyncstream<wchar_t>;
#endif
#endif // C++20 && CXX11_ABI

#if __cplusplus > 202002L
  template<typename _CharT, typename _Traits = char_traits<_CharT>>
    class basic_spanbuf;
  template<typename _CharT, typename _Traits = char_traits<_CharT>>
    class basic_ispanstream;
  template<typename _CharT, typename _Traits = char_traits<_CharT>>
    class basic_ospanstream;
  template<typename _CharT, typename _Traits = char_traits<_CharT>>
    class basic_spanstream;

using spanbuf     = basic_spanbuf<char>;
  using ispanstream = basic_ispanstream<char>;
  using ospanstream = basic_ospanstream<char>;
  using spanstream  = basic_spanstream<char>;

#ifdef _GLIBCXX_USE_WCHAR_T
  using wspanbuf     = basic_spanbuf<wchar_t>;
  using wispanstream = basic_ispanstream<wchar_t>;
  using wospanstream = basic_ospanstream<wchar_t>;
  using wspanstream  = basic_spanstream<wchar_t>;
#endif
#endif // C++23

/** @}  */

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace

#endif /* _GLIBCXX_IOSFWD */