libstdc++-v3/include/std/iostream

   1 // Standard iostream objects -*- C++ -*-
   2
   3 // Copyright (C) 1997-2014 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/bk01pt11ch24.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 HOWTO
  57    *  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 */