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  1. // Standard iostream objects -*- C++ -*-
  2.  
  3. // Copyright (C) 1997-2015 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. /** @file include/iostream
  26.  *  This is a Standard C++ Library header.
  27.  */
  28.  
  29. //
  30. // ISO C++ 14882: 27.3  Standard iostream objects
  31. //
  32.  
  33. #ifndef _GLIBCXX_IOSTREAM
  34. #define _GLIBCXX_IOSTREAM 1
  35.  
  36. #pragma GCC system_header
  37.  
  38. #include <bits/c++config.h>
  39. #include <ostream>
  40. #include <istream>
  41.  
  42. namespace std _GLIBCXX_VISIBILITY(default)
  43. {
  44. _GLIBCXX_BEGIN_NAMESPACE_VERSION
  45.  
  46.   /**
  47.    *  @name Standard Stream Objects
  48.    *
  49.    *  The &lt;iostream&gt; header declares the eight <em>standard stream
  50.    *  objects</em>.  For other declarations, see
  51.    *  http://gcc.gnu.org/onlinedocs/libstdc++/manual/io.html
  52.    *  and the @link iosfwd I/O forward declarations @endlink
  53.    *
  54.    *  They are required by default to cooperate with the global C
  55.    *  library's @c FILE streams, and to be available during program
  56.    *  startup and termination. For more information, see the section of the
  57.    *  manual linked to above.
  58.   */
  59.   //@{
  60.   extern istream cin;           /// Linked to standard input
  61.   extern ostream cout;          /// Linked to standard output
  62.   extern ostream cerr;          /// Linked to standard error (unbuffered)
  63.   extern ostream clog;          /// Linked to standard error (buffered)
  64.  
  65. #ifdef _GLIBCXX_USE_WCHAR_T
  66.   extern wistream wcin;         /// Linked to standard input
  67.   extern wostream wcout;        /// Linked to standard output
  68.   extern wostream wcerr;        /// Linked to standard error (unbuffered)
  69.   extern wostream wclog;        /// Linked to standard error (buffered)
  70. #endif
  71.   //@}
  72.  
  73.   // For construction of filebuffers for cout, cin, cerr, clog et. al.
  74.   static ios_base::Init __ioinit;
  75.  
  76. _GLIBCXX_END_NAMESPACE_VERSION
  77. } // namespace
  78.  
  79. #endif /* _GLIBCXX_IOSTREAM */
  80.