std::ios_base - The base of the I/O class hierarchy.

       Generated automatically by Doxygen for libstdc++ from the source code.

                                                    libstdc++                                std::ios_base(3cxx)

virtualstd::ios_base::~ios_base()[virtual]
       Invokes each callback with erase_event. Destroys local storage.

       Note that the ios_base object for the standard streams never gets destroyed. As a result,  any  callbacks
       registered with the standard streams will not get invoked with erase_event (unless copyfmt is used).

       The base of the I/O class hierarchy.

       This class defines everything that can be defined about I/O that does not depend on the type of
       characters being input or output. Most people will only see ios_base when they need to specify the full
       name of the various I/O flags (e.g., the openmodes).

constfmtflagsstd::ios_base::adjustfield[static]
       A mask of left|right|internal. Useful for the 2-arg form of setf.

       Referenced by std::num_put<_CharT,_OutIter>::do_put(), std::internal(), std::left(), and std::right().

   constopenmodestd::ios_base::app[static]
       Seek to end before each write.

       Referenced by std::basic_filebuf<_CharT,_Traits>::overflow(), and std::basic_filebuf<_CharT,_Traits>::xsputn().

   constopenmodestd::ios_base::ate[static]
       Open and seek to end immediately after opening.

       Referenced by std::basic_filebuf<_CharT,_Traits>::open().

   constiostatestd::ios_base::badbit[static]
       Indicates  a loss of integrity in an input or output sequence (such as an irrecoverable read error from a
       file).

       Referenced by std::basic_istream<_CharT,_Traits>::sentry::sentry(),  std::basic_ios<_CharT,_Traits>::bad(),  std::basic_ios<_CharT,_Traits>::fail(),  std::basic_ostream<_CharT,_Traits>::flush(),
       std::basic_istream<_CharT,_Traits>::get(),  std::basic_istream<char>::get(),  std::basic_istream<_CharT,_Traits>::get(),  std::basic_ostream<_CharT,_Traits>::operator<<(),  std::operator>>(),
       std::basic_istream<_CharT,_Traits>::operator>>(),  std::basic_ostream<_CharT,_Traits>::put(),
       std::basic_istream<_CharT,_Traits>::putback(),  std::basic_istream<_CharT,_Traits>::read(),
       std::basic_istream<_CharT,_Traits>::readsome(),    std::basic_istream<char>::seekg(),
       std::basic_istream<_CharT,_Traits>::seekg(),  std::basic_istream<_CharT,_Traits>::seekg(),
       std::basic_istream<_CharT,_Traits>::sync(),   std::basic_istream<_CharT,_Traits>::tellg(),
       std::basic_istream<char>::tellg(), and std::ws().

   constfmtflagsstd::ios_base::basefield[static]
       A mask of dec|oct|hex. Useful for the 2-arg form of setf.

       Referenced  by  std::dec(),  std::num_get<_CharT,_InIter>::do_get(), std::num_put<_CharT,_OutIter>::do_put(), std::hex(), and std::oct().

   constseekdirstd::ios_base::beg[static]
       Request a seek relative to the beginning of the stream.

       Referenced by std::basic_filebuf<_CharT,_Traits>::seekpos().

   constopenmodestd::ios_base::binary[static]
       Perform input and output in binary mode (as opposed to text mode). This is probably not what you think it
       is; see https://gcc.gnu.org/onlinedocs/libstdc++/manual/fstreams.html#std.io.filestreams.binary.

       Referenced by std::basic_filebuf<_CharT,_Traits>::showmanyc().

   constfmtflagsstd::ios_base::boolalpha[static]
       Insert/extract bool in alphabetic rather than numeric format.

       Referenced by std::boolalpha(), std::num_get<_CharT,_InIter>::do_get(), std::num_put<_CharT,_OutIter>::do_put(), and std::noboolalpha().

   constseekdirstd::ios_base::cur[static]
       Request a seek relative to the current position within the sequence.

       Referenced  by  std::basic_filebuf<_CharT,_Traits>::imbue(),  std::basic_filebuf<_CharT,_Traits>::overflow(),  std::basic_filebuf<_CharT,_Traits>::pbackfail(), std::basic_filebuf<_CharT,_Traits>::seekoff(), std::basic_stringbuf<_CharT,_Traits,_Alloc>::seekoff(),  std::basic_istream<_CharT,_Traits>::tellg(), and std::basic_ostream<_CharT,_Traits>::tellp().

   constfmtflagsstd::ios_base::dec[static]
       Converts integer input or generates integer output in decimal base.

       Referenced by std::dec().

   constseekdirstd::ios_base::end[static]
       Request a seek relative to the current end of the sequence.

       Referenced  by  std::basic_filebuf<_CharT,_Traits>::open(), and std::basic_stringbuf<_CharT,_Traits,_Alloc>::seekoff().

   constiostatestd::ios_base::eofbit[static]
       Indicates that an input operation reached the end of an input sequence.

       Referenced by std::basic_istream<_CharT,_Traits>::sentry::sentry(),  std::time_get<_CharT,_InIter>::do_get(),  std::num_get<_CharT,_InIter>::do_get(),  std::num_get<_CharT,_InIter>::do_get(),
       std::num_get<_CharT,_InIter>::do_get(),  std::num_get<_CharT,_InIter>::do_get(),  std::time_get<_CharT,_InIter>::do_get_date(),  std::time_get<_CharT,_InIter>::do_get_monthname(), std::time_get<_CharT,_InIter>::do_get_time(),  std::time_get<_CharT,_InIter>::do_get_weekday(),  std::time_get<_CharT,_InIter>::do_get_year(), std::basic_ios<_CharT,_Traits>::eof(), std::basic_istream<_CharT,_Traits>::get(),  std::basic_istream<_CharT,_Traits>::get(),  std::basic_istream<char>::get(),
       std::time_get<_CharT,_InIter>::get(),   std::basic_istream<_CharT,_Traits>::ignore(),
       std::basic_istream<_CharT,_Traits>::operator>>(),  std::operator>>(),  std::basic_istream<_CharT,_Traits>::putback(), std::basic_istream<_CharT,_Traits>::read(), std::basic_istream<_CharT,_Traits>::readsome(),  std::basic_istream<_CharT,_Traits>::seekg(),  std::basic_istream<_CharT,_Traits>::seekg(),  std::basic_istream<char>::sync(),  std::basic_istream<_CharT,_Traits>::unget(), and
       std::ws().

   constiostatestd::ios_base::failbit[static]
       Indicates that an input operation failed to read the expected characters, or  that  an  output  operation
       failed to generate the desired characters.

       Referenced  by  std::basic_istream<_CharT,_Traits>::sentry::sentry(),  std::basic_ostream<_CharT,_Traits>::sentry::sentry(), std::num_get<_CharT,_InIter>::do_get(),  std::time_get<_CharT,_InIter>::do_get_monthname(), std::time_get<_CharT,_InIter>::do_get_weekday(), std::time_get<_CharT,_InIter>::do_get_year(),   std::basic_ios<_CharT,_Traits>::fail(),  std::basic_istream<_CharT,_Traits>::get(), std::basic_istream<_CharT,_Traits>::get(), std::basic_istream<char>::get(), std::time_get<_CharT,_InIter>::get(),  std::basic_istream<_CharT,_Traits>::operator>>(),   std::operator>>(),
       std::basic_istream<_CharT,_Traits>::operator>>(),  std::basic_istream<_CharT,_Traits>::read(),
       std::basic_istream<_CharT,_Traits>::seekg(),  std::basic_istream<_CharT,_Traits>::seekg(),
       std::basic_ostream<_CharT,_Traits>::seekp(), and std::basic_ostream<_CharT,_Traits>::seekp().

   constfmtflagsstd::ios_base::fixed[static]
       Generate floating-point output in fixed-point notation.

       Referenced by std::fixed(), and std::hexfloat().

   constfmtflagsstd::ios_base::floatfield[static]
       A mask of scientific|fixed. Useful for the 2-arg form of setf.

       Referenced by std::defaultfloat(), std::fixed(), std::hexfloat(), and std::scientific().

   constiostatestd::ios_base::goodbit[static]
       Indicates all is well.

       Referenced  by  std::basic_istream<_CharT,_Traits>::sentry::sentry(), std::time_get<_CharT,_InIter>::do_get(),   std::num_get<_CharT,_InIter>::do_get(),    std::time_get<_CharT,_InIter>::do_get_monthname(), std::time_get<_CharT,_InIter>::do_get_weekday(), std::time_get<_CharT,_InIter>::do_get_year(),  std::basic_ostream<_CharT,_Traits>::flush(), std::basic_istream<_CharT,_Traits>::get(), std::basic_istream<_CharT,_Traits>::get(),  std::basic_istream<_CharT,_Traits>::get(),
       std::basic_istream<char>::get(), std::basic_istream<_CharT,_Traits>::get(), std::time_get<_CharT,_InIter>::get(), std::basic_istream<_CharT,_Traits>::ignore(),  std::basic_istream<_CharT,_Traits>::ignore(),  std::basic_ostream<_CharT,_Traits>::operator<<(), std::basic_istream<_CharT,_Traits>::operator>>(),    std::operator>>(),    std::basic_istream<_CharT,_Traits>::operator>>(),
       std::basic_ostream<_CharT,_Traits>::put(),  std::basic_istream<_CharT,_Traits>::putback(),
       std::basic_istream<_CharT,_Traits>::read(),  std::basic_istream<_CharT,_Traits>::readsome(),
       std::basic_istream<char>::readsome(),    std::basic_istream<_CharT,_Traits>::seekg(),
       std::basic_istream<_CharT,_Traits>::seekg(),   std::basic_istream<_CharT,_Traits>::sync(),
       std::basic_istream<_CharT,_Traits>::unget(), and std::ws().

   constfmtflagsstd::ios_base::hex[static]
       Converts integer input or generates integer output in hexadecimal base.

       Referenced  by std::num_get<_CharT,_InIter>::do_get(), std::num_put<_CharT,_OutIter>::do_put(), and
       std::hex().

   constopenmodestd::ios_base::in[static]
       Open for input. Default for ifstream and fstream.

       Referenced by std::basic_stringbuf<_CharT,_Traits,_Alloc>::overflow(),  std::basic_filebuf<_CharT,_Traits>::pbackfail(),  std::basic_istream<_CharT,_Traits>::seekg(),  std::basic_istream<_CharT,_Traits>::seekg(), std::basic_stringbuf<_CharT,_Traits,_Alloc>::seekoff(),  std::basic_stringbuf<_CharT,_Traits,_Alloc>::seekpos(),   std::basic_filebuf<_CharT,_Traits>::showmanyc(),
       std::basic_istream<_CharT,_Traits>::tellg(),  std::basic_filebuf<_CharT,_Traits>::underflow(),
       std::basic_stringbuf<_CharT,_Traits,_Alloc>::underflow(), and std::basic_filebuf<_CharT,_Traits>::xsgetn().

   constfmtflagsstd::ios_base::internal[static]
       Adds fill characters at a designated internal point in certain generated output, or identical to right if
       no such point is designated.

       Referenced by std::internal().

   constfmtflagsstd::ios_base::left[static]
       Adds fill characters on the right (final positions) of certain generated output.  (I.e.,  the  thing  you
       print is flush left.)

       Referenced by std::num_put<_CharT,_OutIter>::do_put(), and std::left().

   constfmtflagsstd::ios_base::oct[static]
       Converts integer input or generates integer output in octal base.

       Referenced by std::oct().

   constopenmodestd::ios_base::out[static]
       Open for output. Default for ofstream and fstream.

       Referenced  by  std::basic_filebuf<_CharT,_Traits>::overflow(), std::basic_stringbuf<_CharT,_Traits,_Alloc>::overflow(), std::basic_stringbuf<_CharT,_Traits,_Alloc>::pbackfail(), std::basic_stringbuf<_CharT,_Traits,_Alloc>::seekoff(), std::basic_ostream<_CharT,_Traits>::seekp(), std::basic_ostream<_CharT,_Traits>::seekp(),   std::basic_stringbuf<_CharT,_Traits,_Alloc>::seekpos(),
       std::basic_ostream<_CharT,_Traits>::tellp(), and std::basic_filebuf<_CharT,_Traits>::xsputn().

   constfmtflagsstd::ios_base::right[static]
       Adds  fill  characters  on the left (initial positions) of certain generated output. (I.e., the thing you
       print is flush right.)

       Referenced by std::right().

   constfmtflagsstd::ios_base::scientific[static]
       Generates floating-point output in scientific notation.

       Referenced by std::hexfloat(), and std::scientific().

   constfmtflagsstd::ios_base::showbase[static]
       Generates a prefix indicating the numeric base of generated integer output.

       Referenced by std::num_put<_CharT,_OutIter>::do_put(), std::noshowbase(), and std::showbase().

   constfmtflagsstd::ios_base::showpoint[static]
       Generates a decimal-point character unconditionally in generated floating-point output.

       Referenced by std::noshowpoint(), and std::showpoint().

   constfmtflagsstd::ios_base::showpos[static]
       Generates a + sign in non-negative generated numeric output.

       Referenced by std::noshowpos(), and std::showpos().

   constfmtflagsstd::ios_base::skipws[static]
       Skips leading white space before certain input operations.

       Referenced    by    std::basic_istream<_CharT,_Traits>::sentry::sentry(),    std::noskipws(),
       std::__detail::operator>>(), and std::skipws().

   constopenmodestd::ios_base::trunc[static]
       Truncate an existing stream when opening. Default for ofstream.

   constfmtflagsstd::ios_base::unitbuf[static]
       Flushes output after each output operation.

       Referenced by std::nounitbuf(), and std::unitbuf().

   constfmtflagsstd::ios_base::uppercase[static]
       Replaces certain lowercase letters with their uppercase equivalents in generated output.

       Referenced by std::num_put<_CharT,_OutIter>::do_put(), std::nouppercase(), and std::uppercase().

enumstd::ios_base::event
       The  set  of  events  that  may  be  passed  to  an event callback. erase_event is used during ~ios() and
       copyfmt(). imbue_event is used during imbue(). copyfmt_event is used during copyfmt().

constlocale&std::ios_base::_M_getloc()const[inline]
       Locale access.

       Returns
           A reference to the current locale.

       Like getloc above, but returns a reference instead of generating a copy.

   fmtflagsstd::ios_base::flags()const[inline]
       Access to format flags.

       Returns
           The format control flags for both input and output.

   fmtflagsstd::ios_base::flags(fmtflags__fmtfl)[inline]
       Setting new format flags all at once.

       Parameters__fmtfl The new flags to set.

       Returns
           The previous format control flags.

       This function overwrites all the format flags with __fmtfl.

   localestd::ios_base::getloc()const[inline]
       Locale access.

       Returns
           A copy of the current locale.

       If imbue(loc) has previously been called, then this function returns loc. Otherwise, it returns a copy of
       std::locale(), the global C++ locale.

   localestd::ios_base::imbue(constlocale&__loc)
       Setting a new locale.

       Parameters__loc The new locale.

       Returns
           The previous locale.

       Sets the new locale for this stream, and then invokes each callback with imbue_event.

       Referenced by std::basic_ios<_CharT,_Traits>::imbue().

   long&std::ios_base::iword(int__ix)[inline]
       Access to integer array.

       Parameters__ix Index into the array.

       Returns
           A reference to an integer associated with the index.

       The  iword  function  provides access to an array of integers that can be used for any purpose. The array
       grows as required to hold the supplied index. All integers in the array are initialized to 0.

       The implementation reserves several indices. You should use xalloc to obtain an index  that  is  safe  to
       use. Also note that since the array can grow dynamically, it is not safe to hold onto the reference.

   streamsizestd::ios_base::precision()const[inline]
       Flags access.

       Returns
           The precision to generate on certain output operations.

       Be careful if you try to give a definition of precision here; see DR 189.

   streamsizestd::ios_base::precision(streamsize__prec)[inline]
       Changing flags.

       Parameters__prec The new precision value.

       Returns
           The previous value of precision().

   void*&std::ios_base::pword(int__ix)[inline]
       Access to void pointer array.

       Parameters__ix Index into the array.

       Returns
           A reference to a void* associated with the index.

       The  pword  function  provides access to an array of pointers that can be used for any purpose. The array
       grows as required to hold the supplied index. All pointers in the array are initialized to 0.

       The implementation reserves several indices. You should use xalloc to obtain an index  that  is  safe  to
       use. Also note that since the array can grow dynamically, it is not safe to hold onto the reference.

   voidstd::ios_base::register_callback(event_callback__fn,int__index)
       Add the callback __fn with parameter __index.

       Parameters__fn The function to add.
           __index The integer to pass to the function when invoked.

       Registers  a  function  as  an event callback with an integer parameter to be passed to the function when
       invoked. Multiple copies of the function are allowed. If there are multiple callbacks, they  are  invoked
       in the order they were registered.

   fmtflagsstd::ios_base::setf(fmtflags__fmtfl)[inline]
       Setting new format flags.

       Parameters__fmtfl Additional flags to set.

       Returns
           The previous format control flags.

       This function sets additional flags in format control. Flags that were previously set remain set.

   fmtflagsstd::ios_base::setf(fmtflags__fmtfl,fmtflags__mask)[inline]
       Setting new format flags.

       Parameters__fmtfl Additional flags to set.
           __mask The flags mask for fmtfl.

       Returns
           The previous format control flags.

       This  function  clears  mask  in  the  format  flags,  then  sets  fmtfl  &  mask.  An  example  mask  is
       ios_base::adjustfield.

   staticboolstd::ios_base::sync_with_stdio(bool__sync=true)[static]
       Interaction with the standard C I/O objects.

       Parameters__sync Whether to synchronize or not.

       Returns
           True if the standard streams were previously synchronized.

       The synchronization referred to is only that between the standard C facilities  (e.g.,  stdout)  and  the
       standard     C++     objects    (e.g.,    cout).    User-declared    streams    are    unaffected.    See
       https://gcc.gnu.org/onlinedocs/libstdc++/manual/fstreams.html#std.io.filestreams.binary

   voidstd::ios_base::unsetf(fmtflags__mask)[inline]
       Clearing format flags.

       Parameters__mask The flags to unset.

       This function clears __mask in the format flags.

   streamsizestd::ios_base::width()const[inline]
       Flags access.

       Returns
           The minimum field width to generate on output operations.

       Minimumfieldwidth refers to the number of characters.

   streamsizestd::ios_base::width(streamsize__wide)[inline]
       Changing flags.

       Parameters__wide The new width value.

       Returns
           The previous value of width().

   staticintstd::ios_base::xalloc()[static]
       Access to unique indices.

       Returns
           An integer different from all previous calls.

       This function returns a unique integer every time it is called. It can be used for any  purpose,  but  is
       primarily  intended  to  be  a unique index for the iword and pword functions. The expectation is that an
       application calls xalloc in order to obtain an index in the iword and  pword  arrays  that  can  be  used
       without fear of conflict.

       The  implementation  maintains  a  static  variable  that is incremented and returned on each invocation.
       xalloc is guaranteed to return an index that is safe to use in the iword and pword arrays.

typedefvoid(*std::ios_base::event_callback)(event__e,ios_base&__b,int__i)
       The type of an event callback function.

       Parameters__e One of the members of the event enum.
           __b Reference to the ios_base object.
           __i The integer provided when the callback was registered.

       Event callbacks are user defined functions that get called during several ios_base and basic_ios
       functions, specifically imbue(), copyfmt(), and ~ios().

   typedef_Ios_Fmtflagsstd::ios_base::fmtflags
       This is a bitmask type. _Ios_Fmtflags is implementation-defined,butitisvalidtoperformbitwiseoperationsonthesevaluesandexpecttheRightThingtohappen.Definedobjectsoftypefmtflagsare:

       • boolalpha

       • dec

       • fixed

       • hex

       • internal

       • left

       • oct

       • right

       • scientific

       • showbase

       • showpoint

       • showpos

       • skipws

       • unitbuf

       • uppercase

       • adjustfield

       • basefield

       • floatfield

   typedef_Ios_Iostatestd::ios_base::iostate
       This  is  a  bitmask  type.  _Ios_Iostate  is  implementation-defined,butitisvalidtoperformbitwiseoperationsonthesevaluesandexpecttheRightThingtohappen.Definedobjectsoftypeiostateare:

       • badbit

       • eofbit

       • failbit

       • goodbit

   typedef_Ios_Openmodestd::ios_base::openmode
       This is a bitmask type. _Ios_Openmode is implementation-defined,butitisvalidtoperformbitwiseoperationsonthesevaluesandexpecttheRightThingtohappen.Definedobjectsoftypeopenmodeare:

       • app

       • ate

       • binary

       • in

       • out

       • trunc

   typedef_Ios_Seekdirstd::ios_base::seekdir
       This is an enumerated type. _Ios_Seekdir is implementation-defined.Definedvaluesoftypeseekdirare:

       • beg

       • cur, equivalent to SEEK_CUR in the C standard library.

       • end, equivalent to SEEK_END in the C standard library.

       std::ios_base - The base of the I/O class hierarchy.

       #include <ios>

       Inherited by std::basic_ios<char,_Traits>, std::basic_ios<_CharT,char_traits<_CharT>>, and
       std::basic_ios<_CharT,_Traits>.

   Classes
       class failure
           These are thrown to indicate problems with io.

   PublicTypes
       enum event { erase_event, imbue_event, copyfmt_event }
           The set of events that may be passed to an event callback.
       typedefvoid(* event_callback) (event __e, ios_base &__b, int __i)
           The type of an event callback function.
       typedef _Ios_Fmtflags fmtflags
           This is a bitmask type.
       typedef _Ios_Iostate iostate
           This is a bitmask type.
       typedef _Ios_Openmode openmode
           This is a bitmask type.
       typedef _Ios_Seekdir seekdir
           This is an enumerated type.

   PublicMemberFunctionsios_base (const ios_base &)=deletevirtual~ios_base ()
       const locale & _M_getloc () const
           Locale access.
       fmtflagsflags () const
           Access to format flags.
       fmtflagsflags (fmtflags__fmtfl)
           Setting new format flags all at once.
       localegetloc () const
           Locale access.
       localeimbue (const locale &__loc)  throw ()
           Setting a new locale.
       long & iword (int __ix)
           Access to integer array.
       ios_base & operator= (const ios_base &)=deletestreamsizeprecision () const
           Flags access.
       streamsizeprecision (streamsize__prec)
           Changing flags.
       void *& pword (int __ix)
           Access to void pointer array.
       voidregister_callback (event_callback__fn, int __index)
           Add the callback __fn with parameter __index.
       fmtflagssetf (fmtflags__fmtfl)
           Setting new format flags.
       fmtflagssetf (fmtflags__fmtfl, fmtflags __mask)
           Setting new format flags.
       voidunsetf (fmtflags __mask)
           Clearing format flags.
       streamsizewidth () const
           Flags access.
       streamsizewidth (streamsize__wide)
           Changing flags.

   StaticPublicMemberFunctionsstatic bool sync_with_stdio (bool __sync=true)
           Interaction with the standard C I/O objects.
       static int xalloc ()  throw ()
           Access to unique indices.

   StaticPublicAttributesstatic const openmode__noreplacestatic const fmtflagsadjustfield
           A mask of left|right|internal. Useful for the 2-arg form of setf.
       static const openmodeapp
           Seek to end before each write.
       static const openmodeate
           Open and seek to end immediately after opening.
       static const iostatebadbit
           Indicates a loss of integrity in an input or output sequence (such as an irrecoverable read error
           from a file).
       static const fmtflagsbasefield
           A mask of dec|oct|hex. Useful for the 2-arg form of setf.
       static const seekdirbeg
           Request a seek relative to the beginning of the stream.
       static const openmodebinary
           Perform input and output in binary mode (as opposed to text mode). This is probably not what you
           think it is; see
           https://gcc.gnu.org/onlinedocs/libstdc++/manual/fstreams.html#std.io.filestreams.binary.
       static const fmtflagsboolalpha
           Insert/extract bool in alphabetic rather than numeric format.
       static const seekdircur
           Request a seek relative to the current position within the sequence.
       static const fmtflagsdec
           Converts integer input or generates integer output in decimal base.
       static const seekdirend
           Request a seek relative to the current end of the sequence.
       static const iostateeofbit
           Indicates that an input operation reached the end of an input sequence.
       static const iostatefailbit
           Indicates that an input operation failed to read the expected characters, or that an output operation
           failed to generate the desired characters.
       static const fmtflagsfixed
           Generate floating-point output in fixed-point notation.
       static const fmtflagsfloatfield
           A mask of scientific|fixed. Useful for the 2-arg form of setf.
       static const iostategoodbit
           Indicates all is well.
       static const fmtflagshex
           Converts integer input or generates integer output in hexadecimal base.
       static const openmodein
           Open for input. Default for ifstream and fstream.
       static const fmtflagsinternal
           Adds fill characters at a designated internal point in certain generated output, or identical to
           right if no such point is designated.
       static const fmtflagsleft
           Adds fill characters on the right (final positions) of certain generated output. (I.e., the thing you
           print is flush left.)
       static const fmtflagsoct
           Converts integer input or generates integer output in octal base.
       static const openmodeout
           Open for output. Default for ofstream and fstream.
       static const fmtflagsright
           Adds fill characters on the left (initial positions) of certain generated output. (I.e., the thing
           you print is flush right.)
       static const fmtflagsscientific
           Generates floating-point output in scientific notation.
       static const fmtflagsshowbase
           Generates a prefix indicating the numeric base of generated integer output.
       static const fmtflagsshowpoint
           Generates a decimal-point character unconditionally in generated floating-point output.
       static const fmtflagsshowpos
           Generates a + sign in non-negative generated numeric output.
       static const fmtflagsskipws
           Skips leading white space before certain input operations.
       static const openmodetrunc
           Truncate an existing stream when opening. Default for ofstream.
       static const fmtflagsunitbuf
           Flushes output after each output operation.
       static const fmtflagsuppercase
           Replaces certain lowercase letters with their uppercase equivalents in generated output.

   ProtectedTypes
       enum { _S_local_word_size }

   ProtectedMemberFunctionsvoid_M_call_callbacks (event__ev)  throw ()
       void_M_dispose_callbacks (void)  throw ()
       _Words & _M_grow_words (int __index, bool __iword)
       void_M_init ()  throw ()
       void_M_move (ios_base &) noexcept
       void_M_swap (ios_base &__rhs) noexcept

   ProtectedAttributes
       _Callback_list * _M_callbacksiostate_M_exceptionfmtflags_M_flagslocale_M_ios_locale
       _Words _M_local_word [_S_local_word_size]
       streamsize_M_precisioniostate_M_streambuf_statestreamsize_M_width
       _Words * _M_word
       int _M_word_size
       _Words _M_word_zero