LTP GCOV extension - code coverage report
Current view: | directory - usr/include/c++/4.3 - ostream
Test: | lcov.info
Date: | 2008-08-14 |  | Instrumented lines: | 33
Code covered: | 0.0 % |  | Executed lines: | 0

           1                 : // Output streams -*- C++ -*-
           2                 :
           3                 : // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
           4                 : // 2006, 2007, 2008
           5                 : // Free Software Foundation, Inc.
           6                 : //
           7                 : // This file is part of the GNU ISO C++ Library.  This library is free
           8                 : // software; you can redistribute it and/or modify it under the
           9                 : // terms of the GNU General Public License as published by the
          10                 : // Free Software Foundation; either version 2, or (at your option)
          11                 : // any later version.
          12                 :
          13                 : // This library is distributed in the hope that it will be useful,
          14                 : // but WITHOUT ANY WARRANTY; without even the implied warranty of
          15                 : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
          16                 : // GNU General Public License for more details.
          17                 :
          18                 : // You should have received a copy of the GNU General Public License
          19                 : // along with this library; see the file COPYING.  If not, write to
          20                 : // the Free Software Foundation, 51 Franklin Street, Fifth Floor,
          21                 : // Boston, MA 02110-1301, USA.
          22                 :
          23                 : // As a special exception, you may use this file as part of a free software
          24                 : // library without restriction.  Specifically, if other files instantiate
          25                 : // templates or use macros or inline functions from this file, or you compile
          26                 : // this file and link it with other files to produce an executable, this
          27                 : // file does not by itself cause the resulting executable to be covered by
          28                 : // the GNU General Public License.  This exception does not however
          29                 : // invalidate any other reasons why the executable file might be covered by
          30                 : // the GNU General Public License.
          31                 :
          32                 : /** @file ostream
          33                 :  *  This is a Standard C++ Library header.
          34                 :  */
          35                 :
          36                 : //
          37                 : // ISO C++ 14882: 27.6.2  Output streams
          38                 : //
          39                 :
          40                 : #ifndef _GLIBCXX_OSTREAM
          41                 : #define _GLIBCXX_OSTREAM 1
          42                 :
          43                 : #pragma GCC system_header
          44                 :
          45                 : #include <ios>
          46                 : #include <bits/ostream_insert.h>
          47                 :
          48                 : _GLIBCXX_BEGIN_NAMESPACE(std)
          49                 :
          50                 :   // [27.6.2.1] Template class basic_ostream
          51                 :   /**
          52                 :    *  @brief  Controlling output.
          53                 :    *
          54                 :    *  This is the base class for all output streams.  It provides text
          55                 :    *  formatting of all builtin types, and communicates with any class
          56                 :    *  derived from basic_streambuf to do the actual output.
          57                 :   */
          58                 :   template<typename _CharT, typename _Traits>
          59                 :     class basic_ostream : virtual public basic_ios<_CharT, _Traits>
          60                 :     {
          61                 :     public:
          62                 :       // Types (inherited from basic_ios (27.4.4)):
          63                 :       typedef _CharT                                    char_type;
          64                 :       typedef typename _Traits::int_type                int_type;
          65                 :       typedef typename _Traits::pos_type                pos_type;
          66                 :       typedef typename _Traits::off_type                off_type;
          67                 :       typedef _Traits                                   traits_type;
          68                 :
          69                 :       // Non-standard Types:
          70                 :       typedef basic_streambuf<_CharT, _Traits>            __streambuf_type;
          71                 :       typedef basic_ios<_CharT, _Traits>          __ios_type;
          72                 :       typedef basic_ostream<_CharT, _Traits>              __ostream_type;
          73                 :       typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> >
          74                 :                                                         __num_put_type;
          75                 :       typedef ctype<_CharT>                               __ctype_type;
          76                 :
          77                 :       // [27.6.2.2] constructor/destructor
          78                 :       /**
          79                 :        *  @brief  Base constructor.
          80                 :        *
          81                 :        *  This ctor is almost never called by the user directly, rather from
          82                 :        *  derived classes' initialization lists, which pass a pointer to
          83                 :        *  their own stream buffer.
          84                 :       */
          85                 :       explicit
          86               0 :       basic_ostream(__streambuf_type* __sb)
          87               0 :       { this->init(__sb); }
          88                 :
          89                 :       /**
          90                 :        *  @brief  Base destructor.
          91                 :        *
          92                 :        *  This does very little apart from providing a virtual base dtor.
          93                 :       */
          94                 :       virtual
          95               0 :       ~basic_ostream() { }
          96                 :
          97                 :       // [27.6.2.3] prefix/suffix
          98                 :       class sentry;
          99                 :       friend class sentry;
         100                 :
         101                 :       // [27.6.2.5] formatted output
         102                 :       // [27.6.2.5.3]  basic_ostream::operator<<
         103                 :       //@{
         104                 :       /**
         105                 :        *  @brief  Interface for manipulators.
         106                 :        *
         107                 :        *  Manipulators such as @c std::endl and @c std::hex use these
         108                 :        *  functions in constructs like "std::cout << std::endl".  For more
         109                 :        *  information, see the iomanip header.
         110                 :       */
         111                 :       __ostream_type&
         112               0 :       operator<<(__ostream_type& (*__pf)(__ostream_type&))
         113                 :       {
         114                 :         // _GLIBCXX_RESOLVE_LIB_DEFECTS
         115                 :         // DR 60. What is a formatted input function?
         116                 :         // The inserters for manipulators are *not* formatted output functions.
         117               0 :         return __pf(*this);
         118                 :       }
         119                 :
         120                 :       __ostream_type&
         121                 :       operator<<(__ios_type& (*__pf)(__ios_type&))
         122                 :       {
         123                 :         // _GLIBCXX_RESOLVE_LIB_DEFECTS
         124                 :         // DR 60. What is a formatted input function?
         125                 :         // The inserters for manipulators are *not* formatted output functions.
         126                 :         __pf(*this);
         127                 :         return *this;
         128                 :       }
         129                 :
         130                 :       __ostream_type&
         131               0 :       operator<<(ios_base& (*__pf) (ios_base&))
         132                 :       {
         133                 :         // _GLIBCXX_RESOLVE_LIB_DEFECTS
         134                 :         // DR 60. What is a formatted input function?
         135                 :         // The inserters for manipulators are *not* formatted output functions.
         136               0 :         __pf(*this);
         137               0 :         return *this;
         138                 :       }
         139                 :       //@}
         140                 :
         141                 :       // [27.6.2.5.2] arithmetic inserters
         142                 :       /**
         143                 :        *  @name Arithmetic Inserters
         144                 :        *
         145                 :        *  All the @c operator<< functions (aka <em>formatted output
         146                 :        *  functions</em>) have some common behavior.  Each starts by
         147                 :        *  constructing a temporary object of type std::basic_ostream::sentry.
         148                 :        *  This can have several effects, concluding with the setting of a
         149                 :        *  status flag; see the sentry documentation for more.
         150                 :        *
         151                 :        *  If the sentry status is good, the function tries to generate
         152                 :        *  whatever data is appropriate for the type of the argument.
         153                 :        *
         154                 :        *  If an exception is thrown during insertion, ios_base::badbit
         155                 :        *  will be turned on in the stream's error state without causing an
         156                 :        *  ios_base::failure to be thrown.  The original exception will then
         157                 :        *  be rethrown.
         158                 :       */
         159                 :       //@{
         160                 :       /**
         161                 :        *  @brief  Basic arithmetic inserters
         162                 :        *  @param  A variable of builtin type.
         163                 :        *  @return  @c *this if successful
         164                 :        *
         165                 :        *  These functions use the stream's current locale (specifically, the
         166                 :        *  @c num_get facet) to perform numeric formatting.
         167                 :       */
         168                 :       __ostream_type&
         169               0 :       operator<<(long __n)
         170               0 :       { return _M_insert(__n); }
         171                 :
         172                 :       __ostream_type&
         173                 :       operator<<(unsigned long __n)
         174                 :       { return _M_insert(__n); }
         175                 :
         176                 :       __ostream_type&
         177               0 :       operator<<(bool __n)
         178               0 :       { return _M_insert(__n); }
         179                 :
         180                 :       __ostream_type&
         181                 :       operator<<(short __n);
         182                 :
         183                 :       __ostream_type&
         184                 :       operator<<(unsigned short __n)
         185                 :       {
         186                 :         // _GLIBCXX_RESOLVE_LIB_DEFECTS
         187                 :         // 117. basic_ostream uses nonexistent num_put member functions.
         188                 :         return _M_insert(static_cast<unsigned long>(__n));
         189                 :       }
         190                 :
         191                 :       __ostream_type&
         192                 :       operator<<(int __n);
         193                 :
         194                 :       __ostream_type&
         195               0 :       operator<<(unsigned int __n)
         196                 :       {
         197                 :         // _GLIBCXX_RESOLVE_LIB_DEFECTS
         198                 :         // 117. basic_ostream uses nonexistent num_put member functions.
         199               0 :         return _M_insert(static_cast<unsigned long>(__n));
         200                 :       }
         201                 :
         202                 : #ifdef _GLIBCXX_USE_LONG_LONG
         203                 :       __ostream_type&
         204               0 :       operator<<(long long __n)
         205               0 :       { return _M_insert(__n); }
         206                 :
         207                 :       __ostream_type&
         208                 :       operator<<(unsigned long long __n)
         209                 :       { return _M_insert(__n); }
         210                 : #endif
         211                 :
         212                 :       __ostream_type&
         213               0 :       operator<<(double __f)
         214               0 :       { return _M_insert(__f); }
         215                 :
         216                 :       __ostream_type&
         217                 :       operator<<(float __f)
         218                 :       {
         219                 :         // _GLIBCXX_RESOLVE_LIB_DEFECTS
         220                 :         // 117. basic_ostream uses nonexistent num_put member functions.
         221                 :         return _M_insert(static_cast<double>(__f));
         222                 :       }
         223                 :
         224                 :       __ostream_type&
         225                 :       operator<<(long double __f)
         226                 :       { return _M_insert(__f); }
         227                 :
         228                 :       __ostream_type&
         229               0 :       operator<<(const void* __p)
         230               0 :       { return _M_insert(__p); }
         231                 :
         232                 :       /**
         233                 :        *  @brief  Extracting from another streambuf.
         234                 :        *  @param  sb  A pointer to a streambuf
         235                 :        *
         236                 :        *  This function behaves like one of the basic arithmetic extractors,
         237                 :        *  in that it also constructs a sentry object and has the same error
         238                 :        *  handling behavior.
         239                 :        *
         240                 :        *  If @a sb is NULL, the stream will set failbit in its error state.
         241                 :        *
         242                 :        *  Characters are extracted from @a sb and inserted into @c *this
         243                 :        *  until one of the following occurs:
         244                 :        *
         245                 :        *  - the input stream reaches end-of-file,
         246                 :        *  - insertion into the output sequence fails (in this case, the
         247                 :        *    character that would have been inserted is not extracted), or
         248                 :        *  - an exception occurs while getting a character from @a sb, which
         249                 :        *    sets failbit in the error state
         250                 :        *
         251                 :        *  If the function inserts no characters, failbit is set.
         252                 :       */
         253                 :       __ostream_type&
         254                 :       operator<<(__streambuf_type* __sb);
         255                 :       //@}
         256                 :
         257                 :       // [27.6.2.6] unformatted output functions
         258                 :       /**
         259                 :        *  @name Unformatted Output Functions
         260                 :        *
         261                 :        *  All the unformatted output functions have some common behavior.
         262                 :        *  Each starts by constructing a temporary object of type
         263                 :        *  std::basic_ostream::sentry.  This has several effects, concluding
         264                 :        *  with the setting of a status flag; see the sentry documentation
         265                 :        *  for more.
         266                 :        *
         267                 :        *  If the sentry status is good, the function tries to generate
         268                 :        *  whatever data is appropriate for the type of the argument.
         269                 :        *
         270                 :        *  If an exception is thrown during insertion, ios_base::badbit
         271                 :        *  will be turned on in the stream's error state.  If badbit is on in
         272                 :        *  the stream's exceptions mask, the exception will be rethrown
         273                 :        *  without completing its actions.
         274                 :       */
         275                 :       //@{
         276                 :       /**
         277                 :        *  @brief  Simple insertion.
         278                 :        *  @param  c  The character to insert.
         279                 :        *  @return  *this
         280                 :        *
         281                 :        *  Tries to insert @a c.
         282                 :        *
         283                 :        *  @note  This function is not overloaded on signed char and
         284                 :        *         unsigned char.
         285                 :       */
         286                 :       __ostream_type&
         287                 :       put(char_type __c);
         288                 :
         289                 :       // Core write functionality, without sentry.
         290                 :       void
         291                 :       _M_write(const char_type* __s, streamsize __n)
         292                 :       {
         293                 :         const streamsize __put = this->rdbuf()->sputn(__s, __n);
         294                 :         if (__put != __n)
         295                 :           this->setstate(ios_base::badbit);
         296                 :       }
         297                 :
         298                 :       /**
         299                 :        *  @brief  Character string insertion.
         300                 :        *  @param  s  The array to insert.
         301                 :        *  @param  n  Maximum number of characters to insert.
         302                 :        *  @return  *this
         303                 :        *
         304                 :        *  Characters are copied from @a s and inserted into the stream until
         305                 :        *  one of the following happens:
         306                 :        *
         307                 :        *  - @a n characters are inserted
         308                 :        *  - inserting into the output sequence fails (in this case, badbit
         309                 :        *    will be set in the stream's error state)
         310                 :        *
         311                 :        *  @note  This function is not overloaded on signed char and
         312                 :        *         unsigned char.
         313                 :       */
         314                 :       __ostream_type&
         315                 :       write(const char_type* __s, streamsize __n);
         316                 :       //@}
         317                 :
         318                 :       /**
         319                 :        *  @brief  Synchronizing the stream buffer.
         320                 :        *  @return  *this
         321                 :        *
         322                 :        *  If @c rdbuf() is a null pointer, changes nothing.
         323                 :        *
         324                 :        *  Otherwise, calls @c rdbuf()->pubsync(), and if that returns -1,
         325                 :        *  sets badbit.
         326                 :       */
         327                 :       __ostream_type&
         328                 :       flush();
         329                 :
         330                 :       // [27.6.2.4] seek members
         331                 :       /**
         332                 :        *  @brief  Getting the current write position.
         333                 :        *  @return  A file position object.
         334                 :        *
         335                 :        *  If @c fail() is not false, returns @c pos_type(-1) to indicate
         336                 :        *  failure.  Otherwise returns @c rdbuf()->pubseekoff(0,cur,out).
         337                 :       */
         338                 :       pos_type
         339                 :       tellp();
         340                 :
         341                 :       /**
         342                 :        *  @brief  Changing the current write position.
         343                 :        *  @param  pos  A file position object.
         344                 :        *  @return  *this
         345                 :        *
         346                 :        *  If @c fail() is not true, calls @c rdbuf()->pubseekpos(pos).  If
         347                 :        *  that function fails, sets failbit.
         348                 :       */
         349                 :       __ostream_type&
         350                 :       seekp(pos_type);
         351                 :
         352                 :       /**
         353                 :        *  @brief  Changing the current write position.
         354                 :        *  @param  off  A file offset object.
         355                 :        *  @param  dir  The direction in which to seek.
         356                 :        *  @return  *this
         357                 :        *
         358                 :        *  If @c fail() is not true, calls @c rdbuf()->pubseekoff(off,dir).
         359                 :        *  If that function fails, sets failbit.
         360                 :       */
         361                 :        __ostream_type&
         362                 :       seekp(off_type, ios_base::seekdir);
         363                 :
         364                 :     protected:
         365               0 :       basic_ostream()
         366               0 :       { this->init(0); }
         367                 :
         368                 :       template<typename _ValueT>
         369                 :         __ostream_type&
         370                 :         _M_insert(_ValueT __v);
         371                 :     };
         372                 :
         373                 :   /**
         374                 :    *  @brief  Performs setup work for output streams.
         375                 :    *
         376                 :    *  Objects of this class are created before all of the standard
         377                 :    *  inserters are run.  It is responsible for "exception-safe prefix and
         378                 :    *  suffix operations."  Additional actions may be added by the
         379                 :    *  implementation, and we list them in
         380                 :    *  http://gcc.gnu.org/onlinedocs/libstdc++/17_intro/howto.html#5
         381                 :    *  under [27.6] notes.
         382                 :   */
         383                 :   template <typename _CharT, typename _Traits>
         384                 :     class basic_ostream<_CharT, _Traits>::sentry
         385                 :     {
         386                 :       // Data Members:
         387                 :       bool                              _M_ok;
         388                 :       basic_ostream<_CharT, _Traits>&         _M_os;
         389                 :
         390                 :     public:
         391                 :       /**
         392                 :        *  @brief  The constructor performs preparatory work.
         393                 :        *  @param  os  The output stream to guard.
         394                 :        *
         395                 :        *  If the stream state is good (@a os.good() is true), then if the
         396                 :        *  stream is tied to another output stream, @c is.tie()->flush()
         397                 :        *  is called to synchronize the output sequences.
         398                 :        *
         399                 :        *  If the stream state is still good, then the sentry state becomes
         400                 :        *  true ("okay").
         401                 :       */
         402                 :       explicit
         403                 :       sentry(basic_ostream<_CharT, _Traits>& __os);
         404                 :
         405                 :       /**
         406                 :        *  @brief  Possibly flushes the stream.
         407                 :        *
         408                 :        *  If @c ios_base::unitbuf is set in @c os.flags(), and
         409                 :        *  @c std::uncaught_exception() is true, the sentry destructor calls
         410                 :        *  @c flush() on the output stream.
         411                 :       */
         412                 :       ~sentry()
         413                 :       {
         414                 :         // XXX MT
         415                 :         if (bool(_M_os.flags() & ios_base::unitbuf) && !uncaught_exception())
         416                 :           {
         417                 :             // Can't call flush directly or else will get into recursive lock.
         418                 :             if (_M_os.rdbuf() && _M_os.rdbuf()->pubsync() == -1)
         419                 :               _M_os.setstate(ios_base::badbit);
         420                 :           }
         421                 :       }
         422                 :
         423                 :       /**
         424                 :        *  @brief  Quick status checking.
         425                 :        *  @return  The sentry state.
         426                 :        *
         427                 :        *  For ease of use, sentries may be converted to booleans.  The
         428                 :        *  return value is that of the sentry state (true == okay).
         429                 :       */
         430                 :       operator bool() const
         431                 :       { return _M_ok; }
         432                 :     };
         433                 :
         434                 :   // [27.6.2.5.4] character insertion templates
         435                 :   //@{
         436                 :   /**
         437                 :    *  @brief  Character inserters
         438                 :    *  @param  out  An output stream.
         439                 :    *  @param  c  A character.
         440                 :    *  @return  out
         441                 :    *
         442                 :    *  Behaves like one of the formatted arithmetic inserters described in
         443                 :    *  std::basic_ostream.  After constructing a sentry object with good
         444                 :    *  status, this function inserts a single character and any required
         445                 :    *  padding (as determined by [22.2.2.2.2]).  @c out.width(0) is then
         446                 :    *  called.
         447                 :    *
         448                 :    *  If @a c is of type @c char and the character type of the stream is not
         449                 :    *  @c char, the character is widened before insertion.
         450                 :   */
         451                 :   template<typename _CharT, typename _Traits>
         452                 :     inline basic_ostream<_CharT, _Traits>&
         453                 :     operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
         454                 :     { return __ostream_insert(__out, &__c, 1); }
         455                 :
         456                 :   template<typename _CharT, typename _Traits>
         457                 :     inline basic_ostream<_CharT, _Traits>&
         458                 :     operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
         459                 :     { return (__out << __out.widen(__c)); }
         460                 :
         461                 :   // Specialization
         462                 :   template <class _Traits>
         463                 :     inline basic_ostream<char, _Traits>&
         464               0 :     operator<<(basic_ostream<char, _Traits>& __out, char __c)
         465               0 :     { return __ostream_insert(__out, &__c, 1); }
         466                 :
         467                 :   // Signed and unsigned
         468                 :   template<class _Traits>
         469                 :     inline basic_ostream<char, _Traits>&
         470                 :     operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
         471                 :     { return (__out << static_cast<char>(__c)); }
         472                 :
         473                 :   template<class _Traits>
         474                 :     inline basic_ostream<char, _Traits>&
         475                 :     operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
         476                 :     { return (__out << static_cast<char>(__c)); }
         477                 :   //@}
         478                 :
         479                 :   //@{
         480                 :   /**
         481                 :    *  @brief  String inserters
         482                 :    *  @param  out  An output stream.
         483                 :    *  @param  s  A character string.
         484                 :    *  @return  out
         485                 :    *  @pre  @a s must be a non-NULL pointer
         486                 :    *
         487                 :    *  Behaves like one of the formatted arithmetic inserters described in
         488                 :    *  std::basic_ostream.  After constructing a sentry object with good
         489                 :    *  status, this function inserts @c traits::length(s) characters starting
         490                 :    *  at @a s, widened if necessary, followed by any required padding (as
         491                 :    *  determined by [22.2.2.2.2]).  @c out.width(0) is then called.
         492                 :   */
         493                 :   template<typename _CharT, typename _Traits>
         494                 :     inline basic_ostream<_CharT, _Traits>&
         495                 :     operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
         496                 :     {
         497                 :       if (!__s)
         498                 :         __out.setstate(ios_base::badbit);
         499                 :       else
         500                 :         __ostream_insert(__out, __s,
         501                 :                          static_cast<streamsize>(_Traits::length(__s)));
         502                 :       return __out;
         503                 :     }
         504                 :
         505                 :   template<typename _CharT, typename _Traits>
         506                 :     basic_ostream<_CharT, _Traits> &
         507                 :     operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s);
         508                 :
         509                 :   // Partial specializations
         510                 :   template<class _Traits>
         511                 :     inline basic_ostream<char, _Traits>&
         512               0 :     operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
         513                 :     {
         514               0 :       if (!__s)
         515               0 :         __out.setstate(ios_base::badbit);
         516                 :       else
         517               0 :         __ostream_insert(__out, __s,
         518                 :                          static_cast<streamsize>(_Traits::length(__s)));
         519               0 :       return __out;
         520                 :     }
         521                 :
         522                 :   // Signed and unsigned
         523                 :   template<class _Traits>
         524                 :     inline basic_ostream<char, _Traits>&
         525                 :     operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
         526                 :     { return (__out << reinterpret_cast<const char*>(__s)); }
         527                 :
         528                 :   template<class _Traits>
         529                 :     inline basic_ostream<char, _Traits> &
         530                 :     operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
         531                 :     { return (__out << reinterpret_cast<const char*>(__s)); }
         532                 :   //@}
         533                 :
         534                 :   // [27.6.2.7] standard basic_ostream manipulators
         535                 :   /**
         536                 :    *  @brief  Write a newline and flush the stream.
         537                 :    *
         538                 :    *  This manipulator is often mistakenly used when a simple newline is
         539                 :    *  desired, leading to poor buffering performance.  See
         540                 :    *  http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#2 for more
         541                 :    *  on this subject.
         542                 :   */
         543                 :   template<typename _CharT, typename _Traits>
         544                 :     inline basic_ostream<_CharT, _Traits>&
         545               0 :     endl(basic_ostream<_CharT, _Traits>& __os)
         546               0 :     { return flush(__os.put(__os.widen('\n'))); }
         547                 :
         548                 :   /**
         549                 :    *  @brief  Write a null character into the output sequence.
         550                 :    *
         551                 :    *  "Null character" is @c CharT() by definition.  For CharT of @c char,
         552                 :    *  this correctly writes the ASCII @c NUL character string terminator.
         553                 :   */
         554                 :   template<typename _CharT, typename _Traits>
         555                 :     inline basic_ostream<_CharT, _Traits>&
         556                 :     ends(basic_ostream<_CharT, _Traits>& __os)
         557                 :     { return __os.put(_CharT()); }
         558                 :
         559                 :   /**
         560                 :    *  @brief  Flushes the output stream.
         561                 :    *
         562                 :    *  This manipulator simply calls the stream's @c flush() member function.
         563                 :   */
         564                 :   template<typename _CharT, typename _Traits>
         565                 :     inline basic_ostream<_CharT, _Traits>&
         566               0 :     flush(basic_ostream<_CharT, _Traits>& __os)
         567               0 :     { return __os.flush(); }
         568                 :
         569                 : _GLIBCXX_END_NAMESPACE
         570                 :
         571                 : #ifndef _GLIBCXX_EXPORT_TEMPLATE
         572                 : # include <bits/ostream.tcc>
         573                 : #endif
         574                 :
         575                 : #endif  /* _GLIBCXX_OSTREAM */

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