std::basic_ostream< _CharT, _Traits > Class Template Reference
[I/O]

Controlling output.

This is the base class for all output streams. It provides text formatting of all builtin types, and communicates with any class derived from basic_streambuf to do the actual output. More...

Inheritance diagram for std::basic_ostream< _CharT, _Traits >:

List of all members.

Classes

class sentry
Performs setup work for output streams. More...

Public Types

typedef ctype< _CharT > __ctype_type
typedef basic_ios< _CharT,
_Traits > __ios_type
typedef num_put< _CharT,
ostreambuf_iterator< _CharT,
_Traits > > __num_put_type
typedef basic_ostream< _CharT,
_Traits > __ostream_type
typedef basic_streambuf
< _CharT, _Traits > __streambuf_type

typedef _CharT char_type

typedef num_get< _CharT,
istreambuf_iterator< _CharT,
_Traits > > __num_get_type

Public Member Functions

const locale & _M_getloc () const
void _M_setstate (iostate __state)
bool bad () const
basic_ostream (__streambuf_type *__sb)
void clear (iostate __state=goodbit)
basic_ios & copyfmt (const basic_ios &__rhs)
bool eof () const
void exceptions (iostate __except)
iostate exceptions () const
bool fail () const
char_type fill (char_type __ch)
char_type fill () const
fmtflags flags (fmtflags __fmtfl)
fmtflags flags () const
__ostream_type & flush ()
locale getloc () const
bool good () const
locale imbue (const locale &__loc)
long & iword (int __ix)
char narrow (char_type __c, char __dfault) const
streamsize precision (streamsize __prec)
streamsize precision () const
void *& pword (int __ix)
basic_streambuf< _CharT,
_Traits > * rdbuf (basic_streambuf< _CharT, _Traits > *__sb)
basic_streambuf< _CharT,
_Traits > * rdbuf () const
iostate rdstate () const
void register_callback (event_callback __fn, int __index)
__ostream_type & seekp (off_type, ios_base::seekdir)
__ostream_type & seekp (pos_type)
fmtflags setf (fmtflags __fmtfl, fmtflags __mask)
fmtflags setf (fmtflags __fmtfl)
void setstate (iostate __state)
pos_type tellp ()
basic_ostream< _CharT, _Traits > * tie (basic_ostream< _CharT, _Traits > *__tiestr)
basic_ostream< _CharT, _Traits > * tie () const
void unsetf (fmtflags __mask)
char_type widen (char __c) const
streamsize width (streamsize __wide)
streamsize width () const
virtual ~basic_ostream ()

Unformatted Output Functions

All the unformatted output functions have some common behavior. Each starts by constructing a temporary object of type std::basic_ostream::sentry. This has several effects, concluding with the setting of a status flag; see the sentry documentation for more.

If the sentry status is good, the function tries to generate whatever data is appropriate for the type of the argument.

If an exception is thrown during insertion, ios_base::badbit will be turned on in the stream's error state. If badbit is on in the stream's exceptions mask, the exception will be rethrown without completing its actions.

void _M_write (const char_type *__s, streamsize __n)
__ostream_type & put (char_type __c)
__ostream_type & write (const char_type *__s, streamsize __n)

operator void * () const
bool operator! () const

Arithmetic Inserters

All the operator<< functions (aka formatted output functions) have some common behavior. Each starts by constructing a temporary object of type std::basic_ostream::sentry. This can have several effects, concluding with the setting of a status flag; see the sentry documentation for more.

If the sentry status is good, the function tries to generate whatever data is appropriate for the type of the argument.

If an exception is thrown during insertion, ios_base::badbit will be turned on in the stream's error state without causing an ios_base::failure to be thrown. The original exception will then be rethrown.

__ostream_type & operator<< (__streambuf_type *__sb)
__ostream_type & operator<< (const void *__p)
__ostream_type & operator<< (long double __f)
__ostream_type & operator<< (float __f)
__ostream_type & operator<< (double __f)
__ostream_type & operator<< (unsigned long long __n)
__ostream_type & operator<< (long long __n)
__ostream_type & operator<< (unsigned int __n)
__ostream_type & operator<< (int __n)
__ostream_type & operator<< (unsigned short __n)
__ostream_type & operator<< (short __n)
__ostream_type & operator<< (bool __n)
__ostream_type & operator<< (unsigned long __n)
__ostream_type & operator<< (long __n)

__ostream_type & operator<< (ios_base &(*__pf)(ios_base &))
__ostream_type & operator<< (__ios_type &(*__pf)(__ios_type &))
__ostream_type & operator<< (__ostream_type &(*__pf)(__ostream_type &))

Static Public Member Functions

static bool sync_with_stdio (bool __sync=true)
static int xalloc () throw ()

Static Public Attributes

static const fmtflags adjustfield
static const openmode app
static const openmode ate
static const iostate badbit
static const fmtflags basefield
static const seekdir beg
static const openmode binary
static const fmtflags boolalpha
static const seekdir cur
static const fmtflags dec
static const seekdir end
static const iostate eofbit
static const iostate failbit
static const fmtflags fixed
static const fmtflags floatfield
static const iostate goodbit
static const fmtflags hex
static const openmode in
static const fmtflags internal
static const fmtflags left
static const fmtflags oct
static const openmode out
static const fmtflags right
static const fmtflags scientific
static const fmtflags showbase
static const fmtflags showpoint
static const fmtflags showpos
static const fmtflags skipws
static const openmode trunc
static const fmtflags unitbuf
static const fmtflags uppercase

Protected Types

enum { _S_local_word_size }

Protected Member Functions

void _M_cache_locale (const locale &__loc)
void _M_call_callbacks (event __ev) throw ()
void _M_dispose_callbacks (void)
_Words & _M_grow_words (int __index, bool __iword)
void _M_init ()
template<typename _ValueT > __ostream_type & _M_insert (_ValueT __v)
void init (basic_streambuf< _CharT, _Traits > *__sb)

Protected Attributes

_Callback_list * _M_callbacks
const __ctype_type * _M_ctype
char_type _M_fill
bool _M_fill_init
locale _M_ios_locale
_Words _M_local_word [_S_local_word_size]
const __num_get_type * _M_num_get
const __num_put_type * _M_num_put
basic_streambuf< _CharT,
_Traits > * _M_streambuf
basic_ostream< _CharT, _Traits > * _M_tie
_Words * _M_word
int _M_word_size
_Words _M_word_zero

Friends

class sentry

Detailed Description

template<typename _CharT, typename _Traits>
class std::basic_ostream< _CharT, _Traits >

Controlling output.

This is the base class for all output streams. It provides text formatting of all builtin types, and communicates with any class derived from basic_streambuf to do the actual output.

Definition at line 55 of file ostream.

Member Typedef Documentation

template<typename _CharT, typename _Traits>

typedef ctype<_CharT> std::basic_ostream< _CharT, _Traits >::__ctype_type

These are non-standard types.

Reimplemented from std::basic_ios< _CharT, _Traits >.

Definition at line 71 of file ostream.

typedef num_get<_CharT , istreambuf_iterator<_CharT , _Traits > > std::basic_ios< _CharT , _Traits >::__num_get_type [inherited]

These are non-standard types.

Reimplemented in std::basic_istream< _CharT, _Traits >, and std::basic_istream< _CharT, _Traits >.

Definition at line 86 of file basic_ios.h.

template<typename _CharT, typename _Traits>

typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> > std::basic_ostream< _CharT, _Traits >::__num_put_type

These are non-standard types.

Reimplemented from std::basic_ios< _CharT, _Traits >.

Definition at line 70 of file ostream.

template<typename _CharT, typename _Traits>

typedef _CharT std::basic_ostream< _CharT, _Traits >::char_type

These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.

Reimplemented from std::basic_ios< _CharT, _Traits >.

Reimplemented in std::basic_ofstream< _CharT, _Traits >, std::basic_fstream< _CharT, _Traits >, std::basic_iostream< _CharT, _Traits >, std::basic_ostringstream< _CharT, _Traits, _Alloc >, std::basic_stringstream< _CharT, _Traits, _Alloc >, std::basic_iostream< _CharT, _Traits >, and std::basic_iostream< char >.

Definition at line 59 of file ostream.

typedef void(* std::ios_base::event_callback)(event, ios_base &, int) [inherited]

The type of an event callback function.

Parameters:

	event	One of the members of the event enum.
	ios_base	Reference to the ios_base object.
	int	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_Fmtflags std::ios_base::fmtflags [inherited]

This is a bitmask type.

"_Ios_Fmtflags" is implementation-defined, but it is valid to perform bitwise operations on these values and expect the Right Thing to happen. Defined objects of type fmtflags are:

boolalpha
dec
fixed
hex
internal
left
oct
right
scientific
showbase
showpoint
showpos
skipws
unitbuf
uppercase
adjustfield
basefield
floatfield

Definition at line 263 of file ios_base.h.

template<typename _CharT, typename _Traits>

typedef _Traits::int_type std::basic_ostream< _CharT, _Traits >::int_type

These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.

Reimplemented from std::basic_ios< _CharT, _Traits >.

Reimplemented in std::basic_ofstream< _CharT, _Traits >, std::basic_fstream< _CharT, _Traits >, std::basic_iostream< _CharT, _Traits >, std::basic_ostringstream< _CharT, _Traits, _Alloc >, std::basic_stringstream< _CharT, _Traits, _Alloc >, std::basic_iostream< _CharT, _Traits >, and std::basic_iostream< char >.

Definition at line 60 of file ostream.

typedef _Ios_Iostate std::ios_base::iostate [inherited]

This is a bitmask type.

"_Ios_Iostate" is implementation-defined, but it is valid to perform bitwise operations on these values and expect the Right Thing to happen. Defined objects of type iostate are:

badbit
eofbit
failbit
goodbit

Definition at line 338 of file ios_base.h.

template<typename _CharT, typename _Traits>

typedef _Traits::off_type std::basic_ostream< _CharT, _Traits >::off_type

These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.

Reimplemented from std::basic_ios< _CharT, _Traits >.

Reimplemented in std::basic_ofstream< _CharT, _Traits >, std::basic_fstream< _CharT, _Traits >, std::basic_iostream< _CharT, _Traits >, std::basic_ostringstream< _CharT, _Traits, _Alloc >, std::basic_stringstream< _CharT, _Traits, _Alloc >, std::basic_iostream< _CharT, _Traits >, and std::basic_iostream< char >.

Definition at line 62 of file ostream.

typedef _Ios_Openmode std::ios_base::openmode [inherited]

This is a bitmask type.

"_Ios_Openmode" is implementation-defined, but it is valid to perform bitwise operations on these values and expect the Right Thing to happen. Defined objects of type openmode are:

app
ate
binary
in
out
trunc

Definition at line 369 of file ios_base.h.

template<typename _CharT, typename _Traits>

typedef _Traits::pos_type std::basic_ostream< _CharT, _Traits >::pos_type

These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.

Reimplemented from std::basic_ios< _CharT, _Traits >.

Reimplemented in std::basic_ofstream< _CharT, _Traits >, std::basic_fstream< _CharT, _Traits >, std::basic_iostream< _CharT, _Traits >, std::basic_ostringstream< _CharT, _Traits, _Alloc >, std::basic_stringstream< _CharT, _Traits, _Alloc >, std::basic_iostream< _CharT, _Traits >, and std::basic_iostream< char >.

Definition at line 61 of file ostream.

typedef _Ios_Seekdir std::ios_base::seekdir [inherited]

This is an enumerated type.

"_Ios_Seekdir" is implementation-defined. Defined values of type seekdir are:

beg
cur, equivalent to SEEK_CUR in the C standard library.
end, equivalent to SEEK_END in the C standard library.

Definition at line 401 of file ios_base.h.

template<typename _CharT, typename _Traits>

typedef _Traits std::basic_ostream< _CharT, _Traits >::traits_type

These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.

Reimplemented from std::basic_ios< _CharT, _Traits >.

Reimplemented in std::basic_ofstream< _CharT, _Traits >, std::basic_fstream< _CharT, _Traits >, std::basic_iostream< _CharT, _Traits >, std::basic_ostringstream< _CharT, _Traits, _Alloc >, std::basic_stringstream< _CharT, _Traits, _Alloc >, std::basic_iostream< _CharT, _Traits >, and std::basic_iostream< char >.

Definition at line 63 of file ostream.

Member Enumeration Documentation

enum std::ios_base::event [inherited]

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().

Definition at line 427 of file ios_base.h.

Constructor & Destructor Documentation

template<typename _CharT, typename _Traits>

std::basic_ostream< _CharT, _Traits >::basic_ostream ( __streambuf_type * __sb ) [inline, explicit]

Base constructor.

This ctor is almost never called by the user directly, rather from derived classes' initialization lists, which pass a pointer to their own stream buffer.

Definition at line 82 of file ostream.

template<typename _CharT, typename _Traits>

virtual std::basic_ostream< _CharT, _Traits >::~basic_ostream ( ) [inline, virtual]

Base destructor.

This does very little apart from providing a virtual base dtor.

Definition at line 91 of file ostream.

Member Function Documentation

const locale& std::ios_base::_M_getloc ( ) const [inline, inherited]

Locale access.

Returns:: A reference to the current locale.

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

Definition at line 710 of file ios_base.h.

Referenced by std::money_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::time_put< _CharT, _OutIter >::do_put(), std::num_put< _CharT, _OutIter >::do_put(), and std::time_put< _CharT, _OutIter >::put().

template<typename _CharT, typename _Traits>

void std::basic_ostream< _CharT, _Traits >::_M_write	(	const char_type *	__s,
		streamsize	__n
	)			`[inline]`

Simple insertion.

Parameters:

c

The character to insert.

Returns:: *this

Tries to insert c.

Note:: This function is not overloaded on signed char and unsigned char.

Definition at line 287 of file ostream.

Referenced by std::basic_ostream< _CharT, _Traits >::write().

bool std::basic_ios< _CharT , _Traits >::bad ( ) const [inline, inherited]

Fast error checking.

Returns:: True if the badbit is set.

Note that other iostate flags may also be set.

Definition at line 201 of file basic_ios.h.

void std::basic_ios< _CharT , _Traits >::clear ( iostate __state = goodbit ) [inherited]

[Re]sets the error state.

Parameters:

state

The new state flag(s) to set.

See std::ios_base::iostate for the possible bit values. Most users will not need to pass an argument.

basic_ios& std::basic_ios< _CharT , _Traits >::copyfmt ( const basic_ios< _CharT, _Traits > & __rhs ) [inherited]

Copies fields of __rhs into this.

Parameters:

__rhs

The source values for the copies.

Returns:: Reference to this object.

All fields of __rhs are copied into this object except that rdbuf() and rdstate() remain unchanged. All values in the pword and iword arrays are copied. Before copying, each callback is invoked with erase_event. After copying, each (new) callback is invoked with copyfmt_event. The final step is to copy exceptions().

bool std::basic_ios< _CharT , _Traits >::eof ( ) const [inline, inherited]

Fast error checking.

Returns:: True if the eofbit is set.

Note that other iostate flags may also be set.

Definition at line 180 of file basic_ios.h.

Referenced by std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::ignore(), and std::basic_istream< _CharT, _Traits >::putback().

void std::basic_ios< _CharT , _Traits >::exceptions ( iostate __except ) [inline, inherited]

Throwing exceptions on errors.

Parameters:

except

The new exceptions mask.

By default, error flags are set silently. You can set an exceptions mask for each stream; if a bit in the mask becomes set in the error flags, then an exception of type std::ios_base::failure is thrown.

If the error flag is already set when the exceptions mask is added, the exception is immediately thrown. Try running the following under GCC 3.1 or later:

  #include <iostream>
  #include <fstream>
  #include <exception>

  int main()
  {
      std::set_terminate (__gnu_cxx::__verbose_terminate_handler);

      std::ifstream f ("/etc/motd");

      std::cerr << "Setting badbit\n";
      f.setstate (std::ios_base::badbit);

      std::cerr << "Setting exception mask\n";
      f.exceptions (std::ios_base::badbit);
  }

Definition at line 247 of file basic_ios.h.

iostate std::basic_ios< _CharT , _Traits >::exceptions ( ) const [inline, inherited]

Throwing exceptions on errors.

Returns:: The current exceptions mask.

This changes nothing in the stream. See the one-argument version of exceptions(iostate) for the meaning of the return value.

Definition at line 212 of file basic_ios.h.

bool std::basic_ios< _CharT , _Traits >::fail ( ) const [inline, inherited]

Fast error checking.

Returns:: True if either the badbit or the failbit is set.

Checking the badbit in fail() is historical practice. Note that other iostate flags may also be set.

Definition at line 191 of file basic_ios.h.

Referenced by std::basic_istream< _CharT, _Traits >::operator>>(), std::basic_istream< _CharT, _Traits >::seekg(), std::basic_ostream< _CharT, _Traits >::seekp(), and std::basic_ostream< _CharT, _Traits >::tellp().

char_type std::basic_ios< _CharT , _Traits >::fill ( char_type __ch ) [inline, inherited]

Sets a new "empty" character.

Parameters:

ch

The new character.

Returns:: The previous fill character.

The fill character is used to fill out space when P+ characters have been requested (e.g., via setw), Q characters are actually used, and Q<P. It defaults to a space (' ') in the current locale.

Definition at line 380 of file basic_ios.h.

char_type std::basic_ios< _CharT , _Traits >::fill ( ) const [inline, inherited]

Retrieves the "empty" character.

Returns:: The current fill character.

It defaults to a space (' ') in the current locale.

Definition at line 360 of file basic_ios.h.

fmtflags std::ios_base::flags ( fmtflags __fmtfl ) [inline, inherited]

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.

Definition at line 566 of file ios_base.h.

fmtflags std::ios_base::flags ( ) const [inline, inherited]

Access to format flags.

Returns:: The format control flags for both input and output.

Definition at line 555 of file ios_base.h.

Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::num_get< _CharT, _InIter >::do_get(), std::num_put< _CharT, _OutIter >::do_put(), std::basic_ostream< _CharT, _Traits >::operator<<(), and std::operator<<().

template<typename _CharT , typename _Traits >

basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::flush ( ) [inline]

Synchronizing the stream buffer.

Returns:: *this

If rdbuf() is a null pointer, changes nothing.

Otherwise, calls rdbuf()->pubsync(), and if that returns -1, sets badbit.

Definition at line 211 of file ostream.tcc.

Referenced by std::flush().

locale std::ios_base::getloc ( ) const [inline, inherited]

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.

Definition at line 699 of file ios_base.h.

Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::money_put< _CharT, _OutIter >::do_put(), std::basic_ios< _CharT, _Traits >::imbue(), std::operator>>(), and std::ws().

bool std::basic_ios< _CharT , _Traits >::good ( ) const [inline, inherited]

Fast error checking.

Returns:: True if no error flags are set.

A wrapper around rdstate.

Definition at line 170 of file basic_ios.h.

locale std::basic_ios< _CharT , _Traits >::imbue ( const locale & __loc ) [inherited]

Moves to a new locale.

Parameters:

loc

The new locale.

Returns:: The previous locale.

Calls ios_base::imbue(loc), and if a stream buffer is associated with this stream, calls that buffer's pubimbue(loc).

Additional l10n notes are at http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html

Reimplemented from std::ios_base.

Referenced by std::operator<<().

void std::basic_ios< _CharT , _Traits >::init ( basic_streambuf< _CharT , _Traits > * __sb ) [protected, inherited]

All setup is performed here.

This is called from the public constructor. It is not virtual and cannot be redefined.

long& std::ios_base::iword ( int __ix ) [inline, inherited]

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.

Definition at line 745 of file ios_base.h.

char std::basic_ios< _CharT , _Traits >::narrow	(	char_type	__c,
		char	__dfault
	)			const `[inline, inherited]`

Squeezes characters.

Parameters:

	c	The character to narrow.
	dfault	The character to narrow.

Returns:: The narrowed character.

Maps a character of char_type to a character of char, if possible.

Returns the result of

    std::use_facet<ctype<char_type> >(getloc()).narrow(c,dfault)

Additional l10n notes are at http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html

Definition at line 420 of file basic_ios.h.

std::basic_ios< _CharT , _Traits >::operator void * ( ) const [inline, inherited]

The quick-and-easy status check.

This allows you to write constructs such as "if (!a_stream) ..." and "while (a_stream) ..."

Definition at line 111 of file basic_ios.h.

bool std::basic_ios< _CharT , _Traits >::operator! ( ) const [inline, inherited]

The quick-and-easy status check.

This allows you to write constructs such as "if (!a_stream) ..." and "while (a_stream) ..."

Definition at line 115 of file basic_ios.h.

template<typename _CharT , typename _Traits >

basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::operator<< ( __streambuf_type * __sb ) [inline]

Extracting from another streambuf.

Parameters:

sb

A pointer to a streambuf

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If sb is NULL, the stream will set failbit in its error state.

Characters are extracted from sb and inserted into *this until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output sequence fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs while getting a character from sb, which sets failbit in the error state

If the function inserts no characters, failbit is set.

Definition at line 120 of file ostream.tcc.

References std::ios_base::badbit, std::ios_base::failbit, std::ios_base::goodbit, std::basic_ios< _CharT, _Traits >::rdbuf(), and std::basic_ios< _CharT, _Traits >::setstate().

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( const void * __p ) [inline]

Extracting from another streambuf.

Parameters:

sb

A pointer to a streambuf

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If sb is NULL, the stream will set failbit in its error state.

Characters are extracted from sb and inserted into *this until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output sequence fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs while getting a character from sb, which sets failbit in the error state

If the function inserts no characters, failbit is set.

Definition at line 225 of file ostream.

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( long double __f ) [inline]

Extracting from another streambuf.

Parameters:

sb

A pointer to a streambuf

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If sb is NULL, the stream will set failbit in its error state.

Characters are extracted from sb and inserted into *this until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output sequence fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs while getting a character from sb, which sets failbit in the error state

If the function inserts no characters, failbit is set.

Definition at line 221 of file ostream.

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( float __f ) [inline]

Extracting from another streambuf.

Parameters:

sb

A pointer to a streambuf

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If sb is NULL, the stream will set failbit in its error state.

Characters are extracted from sb and inserted into *this until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output sequence fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs while getting a character from sb, which sets failbit in the error state

If the function inserts no characters, failbit is set.

Definition at line 213 of file ostream.

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( double __f ) [inline]

Extracting from another streambuf.

Parameters:

sb

A pointer to a streambuf

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If sb is NULL, the stream will set failbit in its error state.

Characters are extracted from sb and inserted into *this until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output sequence fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs while getting a character from sb, which sets failbit in the error state

If the function inserts no characters, failbit is set.

Definition at line 209 of file ostream.

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( unsigned long long __n ) [inline]

Extracting from another streambuf.

Parameters:

sb

A pointer to a streambuf

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If sb is NULL, the stream will set failbit in its error state.

Characters are extracted from sb and inserted into *this until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output sequence fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs while getting a character from sb, which sets failbit in the error state

If the function inserts no characters, failbit is set.

Definition at line 204 of file ostream.

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( long long __n ) [inline]

Extracting from another streambuf.

Parameters:

sb

A pointer to a streambuf

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If sb is NULL, the stream will set failbit in its error state.

Characters are extracted from sb and inserted into *this until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output sequence fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs while getting a character from sb, which sets failbit in the error state

If the function inserts no characters, failbit is set.

Definition at line 200 of file ostream.

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( unsigned int __n ) [inline]

Extracting from another streambuf.

Parameters:

sb

A pointer to a streambuf

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If sb is NULL, the stream will set failbit in its error state.

Characters are extracted from sb and inserted into *this until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output sequence fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs while getting a character from sb, which sets failbit in the error state

If the function inserts no characters, failbit is set.

Definition at line 191 of file ostream.

template<typename _CharT , typename _Traits >

basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::operator<< ( int __n ) [inline]

Extracting from another streambuf.

Parameters:

sb

A pointer to a streambuf

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If sb is NULL, the stream will set failbit in its error state.

Characters are extracted from sb and inserted into *this until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output sequence fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs while getting a character from sb, which sets failbit in the error state

If the function inserts no characters, failbit is set.

Definition at line 106 of file ostream.tcc.

References std::hex(), and std::oct().

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( unsigned short __n ) [inline]

Extracting from another streambuf.

Parameters:

sb

A pointer to a streambuf

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If sb is NULL, the stream will set failbit in its error state.

Characters are extracted from sb and inserted into *this until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output sequence fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs while getting a character from sb, which sets failbit in the error state

If the function inserts no characters, failbit is set.

Definition at line 180 of file ostream.

template<typename _CharT , typename _Traits >

basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::operator<< ( short __n ) [inline]

Extracting from another streambuf.

Parameters:

sb

A pointer to a streambuf

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If sb is NULL, the stream will set failbit in its error state.

Characters are extracted from sb and inserted into *this until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output sequence fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs while getting a character from sb, which sets failbit in the error state

If the function inserts no characters, failbit is set.

Definition at line 92 of file ostream.tcc.

References std::ios_base::basefield, std::ios_base::flags(), std::ios_base::hex, and std::ios_base::oct.

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( bool __n ) [inline]

Extracting from another streambuf.

Parameters:

sb

A pointer to a streambuf

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If sb is NULL, the stream will set failbit in its error state.

Characters are extracted from sb and inserted into *this until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output sequence fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs while getting a character from sb, which sets failbit in the error state

If the function inserts no characters, failbit is set.

Definition at line 173 of file ostream.

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( unsigned long __n ) [inline]

Extracting from another streambuf.

Parameters:

sb

A pointer to a streambuf

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If sb is NULL, the stream will set failbit in its error state.

Characters are extracted from sb and inserted into *this until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output sequence fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs while getting a character from sb, which sets failbit in the error state

If the function inserts no characters, failbit is set.

Definition at line 169 of file ostream.

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( long __n ) [inline]

Basic arithmetic inserters.

Parameters:

A

variable of builtin type.

Returns:: *this if successful

These functions use the stream's current locale (specifically, the num_get facet) to perform numeric formatting.

Definition at line 165 of file ostream.

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( ios_base &(*)(ios_base &) __pf ) [inline]

Interface for manipulators.

Manipulators such as std::endl and std::hex use these functions in constructs like "std::cout << std::endl". For more information, see the iomanip header.

Definition at line 127 of file ostream.

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( __ios_type &(*)(__ios_type &) __pf ) [inline]

Interface for manipulators.

Manipulators such as std::endl and std::hex use these functions in constructs like "std::cout << std::endl". For more information, see the iomanip header.

Definition at line 117 of file ostream.

template<typename _CharT, typename _Traits>

__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< ( __ostream_type &(*)(__ostream_type &) __pf ) [inline]

Interface for manipulators.

Manipulators such as std::endl and std::hex use these functions in constructs like "std::cout << std::endl". For more information, see the iomanip header.

Definition at line 108 of file ostream.

streamsize std::ios_base::precision ( streamsize __prec ) [inline, inherited]

Changing flags.

Parameters:

prec

The new precision value.

Returns:: The previous value of precision().

Definition at line 634 of file ios_base.h.

streamsize std::ios_base::precision ( ) const [inline, inherited]

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.

Definition at line 625 of file ios_base.h.

Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), and std::operator<<().

template<typename _CharT , typename _Traits >

basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::put ( char_type __c ) [inline]

Simple insertion.

Parameters:

c

The character to insert.

Returns:: *this

Tries to insert c.

Note:: This function is not overloaded on signed char and unsigned char.

Definition at line 149 of file ostream.tcc.

Referenced by std::endl(), and std::ends().

void*& std::ios_base::pword ( int __ix ) [inline, inherited]

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.

Definition at line 766 of file ios_base.h.

basic_streambuf<_CharT , _Traits >* std::basic_ios< _CharT , _Traits >::rdbuf ( basic_streambuf< _CharT , _Traits > * __sb ) [inherited]

Changing the underlying buffer.

Parameters:

sb

The new stream buffer.

Returns:: The previous stream buffer.

Associates a new buffer with the current stream, and clears the error state.

Due to historical accidents which the LWG refuses to correct, the I/O library suffers from a design error: this function is hidden in derived classes by overrides of the zero-argument rdbuf(), which is non-virtual for hysterical raisins. As a result, you must use explicit qualifications to access this function via any derived class. For example:

  std::fstream     foo;         // or some other derived type
  std::streambuf*  p = .....;

  foo.ios::rdbuf(p);            // ios == basic_ios<char>

basic_streambuf<_CharT , _Traits >* std::basic_ios< _CharT , _Traits >::rdbuf ( ) const [inline, inherited]

Accessing the underlying buffer.

Returns:: The current stream buffer.

This does not change the state of the stream.

Reimplemented in std::basic_ifstream< _CharT, _Traits >, std::basic_ofstream< _CharT, _Traits >, std::basic_fstream< _CharT, _Traits >, std::basic_istringstream< _CharT, _Traits, _Alloc >, std::basic_ostringstream< _CharT, _Traits, _Alloc >, and std::basic_stringstream< _CharT, _Traits, _Alloc >.

Definition at line 311 of file basic_ios.h.

iostate std::basic_ios< _CharT , _Traits >::rdstate ( ) const [inline, inherited]

Returns the error state of the stream buffer.

Returns:: A bit pattern (well, isn't everything?)

See std::ios_base::iostate for the possible bit values. Most users will call one of the interpreting wrappers, e.g., good().

Definition at line 127 of file basic_ios.h.

void std::ios_base::register_callback	(	event_callback	__fn,
		int	__index
	)			`[inherited]`

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.

template<typename _CharT , typename _Traits >

basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::seekp	(	off_type	__off,
		ios_base::seekdir	__dir
	)			`[inline]`

Changing the current write position.

Parameters:

	off	A file offset object.
	dir	The direction in which to seek.

Returns:: *this

If fail() is not true, calls rdbuf()->pubseekoff(off,dir). If that function fails, sets failbit.

Definition at line 290 of file ostream.tcc.

References std::ios_base::badbit, std::basic_ios< _CharT, _Traits >::fail(), std::ios_base::failbit, std::ios_base::goodbit, std::ios_base::out, std::basic_streambuf< _CharT, _Traits >::pubseekoff(), std::basic_ios< _CharT, _Traits >::rdbuf(), and std::basic_ios< _CharT, _Traits >::setstate().

template<typename _CharT , typename _Traits >

basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::seekp ( pos_type __pos ) [inline]

Changing the current write position.

Parameters:

pos

A file position object.

Returns:: *this

If fail() is not true, calls rdbuf()->pubseekpos(pos). If that function fails, sets failbit.

Definition at line 258 of file ostream.tcc.

fmtflags std::ios_base::setf	(	fmtflags	__fmtfl,
		fmtflags	__mask
	)			`[inline, inherited]`

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.

Definition at line 599 of file ios_base.h.

fmtflags std::ios_base::setf ( fmtflags __fmtfl ) [inline, inherited]

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.

Definition at line 582 of file ios_base.h.

Referenced by std::boolalpha(), std::dec(), std::fixed(), std::hex(), std::internal(), std::left(), std::oct(), std::right(), std::scientific(), std::showbase(), std::showpoint(), std::showpos(), std::skipws(), std::unitbuf(), and std::uppercase().

void std::basic_ios< _CharT , _Traits >::setstate ( iostate __state ) [inline, inherited]

Sets additional flags in the error state.

Parameters:

state

The additional state flag(s) to set.

See std::ios_base::iostate for the possible bit values.

Definition at line 147 of file basic_ios.h.

Referenced by std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::ignore(), std::basic_ostream< _CharT, _Traits >::operator<<(), std::basic_istream< _CharT, _Traits >::operator>>(), std::basic_istream< _CharT, _Traits >::putback(), std::basic_istream< _CharT, _Traits >::read(), std::basic_istream< _CharT, _Traits >::seekg(), std::basic_ostream< _CharT, _Traits >::seekp(), and std::basic_istream< _CharT, _Traits >::sync().

static bool std::ios_base::sync_with_stdio ( bool __sync = true ) [static, inherited]

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 http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt11ch28s02.html

template<typename _CharT , typename _Traits >

basic_ostream< _CharT, _Traits >::pos_type std::basic_ostream< _CharT, _Traits >::tellp ( ) [inline]

Getting the current write position.

Returns:: A file position object.

If fail() is not false, returns pos_type(-1) to indicate failure. Otherwise returns rdbuf()->pubseekoff(0,cur,out).

Definition at line 237 of file ostream.tcc.

References std::ios_base::badbit, std::ios_base::cur, std::basic_ios< _CharT, _Traits >::fail(), std::ios_base::out, std::basic_streambuf< _CharT, _Traits >::pubseekoff(), and std::basic_ios< _CharT, _Traits >::rdbuf().

basic_ostream<_CharT , _Traits >* std::basic_ios< _CharT , _Traits >::tie ( basic_ostream< _CharT , _Traits > * __tiestr ) [inline, inherited]

Ties this stream to an output stream.

Parameters:

tiestr

The output stream.

Returns:: The previously tied output stream, or NULL if the stream was not tied.

This sets up a new tie; see tie() for more.

Definition at line 297 of file basic_ios.h.

basic_ostream<_CharT , _Traits >* std::basic_ios< _CharT , _Traits >::tie ( ) const [inline, inherited]

Fetches the current tied stream.

Returns:: A pointer to the tied stream, or NULL if the stream is not tied.

A stream may be tied (or synchronized) to a second output stream. When this stream performs any I/O, the tied stream is first flushed. For example, std::cin is tied to std::cout.

Definition at line 285 of file basic_ios.h.

void std::ios_base::unsetf ( fmtflags __mask ) [inline, inherited]

Clearing format flags.

Parameters:

mask

The flags to unset.

This function clears mask in the format flags.

Definition at line 614 of file ios_base.h.

Referenced by std::noboolalpha(), std::noshowbase(), std::noshowpoint(), std::noshowpos(), std::noskipws(), std::nounitbuf(), and std::nouppercase().

char_type std::basic_ios< _CharT , _Traits >::widen ( char __c ) const [inline, inherited]

Widens characters.

Parameters:

c

The character to widen.

Returns:: The widened character.

Maps a character of char to a character of char_type.

Returns the result of

    std::use_facet<ctype<char_type> >(getloc()).widen(c)

Additional l10n notes are at http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html

Definition at line 439 of file basic_ios.h.

streamsize std::ios_base::width ( streamsize __wide ) [inline, inherited]

Changing flags.

Parameters:

wide

The new width value.

Returns:: The previous value of width().

Definition at line 657 of file ios_base.h.

streamsize std::ios_base::width ( ) const [inline, inherited]

Flags access.

Returns:: The minimum field width to generate on output operations.

"Minimum field width" refers to the number of characters.

Definition at line 648 of file ios_base.h.

Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::num_put< _CharT, _OutIter >::do_put(), and std::operator>>().

template<typename _CharT , typename _Traits >

basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::write	(	const char_type *	__s,
		streamsize	__n
	)			`[inline]`

Character string insertion.

Parameters:

	s	The array to insert.
	n	Maximum number of characters to insert.

Returns:: *this

Characters are copied from s and inserted into the stream until one of the following happens:

n characters are inserted
inserting into the output sequence fails (in this case, badbit will be set in the stream's error state)

Note:: This function is not overloaded on signed char and unsigned char.

Definition at line 183 of file ostream.tcc.

References std::basic_ostream< _CharT, _Traits >::_M_write(), and std::ios_base::badbit.

static int std::ios_base::xalloc ( ) throw () [static, inherited]

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.

Member Data Documentation

iostate std::ios_base::_M_exception [protected, inherited]

ios_base data members (doc me)

Definition at line 467 of file ios_base.h.

fmtflags std::ios_base::_M_flags [protected, inherited]

ios_base data members (doc me)

Definition at line 466 of file ios_base.h.

streamsize std::ios_base::_M_precision [protected, inherited]

ios_base data members (doc me)

Definition at line 464 of file ios_base.h.

iostate std::ios_base::_M_streambuf_state [protected, inherited]

ios_base data members (doc me)

Definition at line 468 of file ios_base.h.

streamsize std::ios_base::_M_width [protected, inherited]

ios_base data members (doc me)

Definition at line 465 of file ios_base.h.

const fmtflags std::ios_base::adjustfield [static, inherited]

A mask of left|right|internal. Useful for the 2-arg form of setf.

Definition at line 318 of file ios_base.h.

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

const openmode std::ios_base::app [static, inherited]

Seek to end before each write.

Definition at line 372 of file ios_base.h.

const openmode std::ios_base::ate [static, inherited]

Open and seek to end immediately after opening.

Definition at line 375 of file ios_base.h.

const iostate std::ios_base::badbit [static, inherited]

Indicates a loss of integrity in an input or output sequence (such as an irrecoverable read error from a file).

Definition at line 342 of file ios_base.h.

const fmtflags std::ios_base::basefield [static, inherited]

A mask of dec|oct|hex. Useful for the 2-arg form of setf.

Definition at line 321 of file ios_base.h.

Referenced by std::num_get< _CharT, _InIter >::do_get(), and std::basic_ostream< _CharT, _Traits >::operator<<().

const seekdir std::ios_base::beg [static, inherited]

Request a seek relative to the beginning of the stream.

Definition at line 404 of file ios_base.h.

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

const openmode std::ios_base::binary [static, inherited]

Perform input and output in binary mode (as opposed to text mode). This is probably not what you think it is; see http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt11ch27s02.html.

Definition at line 380 of file ios_base.h.

const fmtflags std::ios_base::boolalpha [static, inherited]

Insert/extract bool in alphabetic rather than numeric format.

Definition at line 266 of file ios_base.h.

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

const seekdir std::ios_base::cur [static, inherited]

Request a seek relative to the current position within the sequence.

Definition at line 407 of file ios_base.h.

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

const fmtflags std::ios_base::dec [static, inherited]

Converts integer input or generates integer output in decimal base.

Definition at line 269 of file ios_base.h.

const seekdir std::ios_base::end [static, inherited]

Request a seek relative to the current end of the sequence.

Definition at line 410 of file ios_base.h.

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

const iostate std::ios_base::eofbit [static, inherited]

Indicates that an input operation reached the end of an input sequence.

Definition at line 345 of file ios_base.h.

Referenced by std::num_get< _CharT, _InIter >::do_get(), std::time_get< _CharT, _InIter >::do_get_date(), std::time_get< _CharT, _InIter >::do_get_monthname(), std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::ignore(), std::basic_istream< _CharT, _Traits >::operator>>(), and std::basic_istream< _CharT, _Traits >::read().

const iostate std::ios_base::failbit [static, inherited]

Indicates that an input operation failed to read the expected characters, or that an output operation failed to generate the desired characters.

Definition at line 350 of file ios_base.h.

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

const fmtflags std::ios_base::fixed [static, inherited]

Generate floating-point output in fixed-point notation.

Definition at line 272 of file ios_base.h.

const fmtflags std::ios_base::floatfield [static, inherited]

A mask of scientific|fixed. Useful for the 2-arg form of setf.

Definition at line 324 of file ios_base.h.

const iostate std::ios_base::goodbit [static, inherited]

Indicates all is well.

Definition at line 353 of file ios_base.h.

const fmtflags std::ios_base::hex [static, inherited]

Converts integer input or generates integer output in hexadecimal base.

Definition at line 275 of file ios_base.h.

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

const openmode std::ios_base::in [static, inherited]

Open for input. Default for ifstream and fstream.

Definition at line 383 of file ios_base.h.

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

const fmtflags std::ios_base::internal [static, inherited]

Adds fill characters at a designated internal point in certain generated output, or identical to right if no such point is designated.

Definition at line 280 of file ios_base.h.

const fmtflags std::ios_base::left [static, inherited]

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

Definition at line 284 of file ios_base.h.

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

const fmtflags std::ios_base::oct [static, inherited]

Converts integer input or generates integer output in octal base.

Definition at line 287 of file ios_base.h.

Referenced by std::basic_ostream< _CharT, _Traits >::operator<<().

const openmode std::ios_base::out [static, inherited]

Open for output. Default for ofstream and fstream.

Definition at line 386 of file ios_base.h.

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

const fmtflags std::ios_base::right [static, inherited]

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

Definition at line 291 of file ios_base.h.

const fmtflags std::ios_base::scientific [static, inherited]

Generates floating-point output in scientific notation.

Definition at line 294 of file ios_base.h.

const fmtflags std::ios_base::showbase [static, inherited]

Generates a prefix indicating the numeric base of generated integer output.

Definition at line 298 of file ios_base.h.

const fmtflags std::ios_base::showpoint [static, inherited]

Generates a decimal-point character unconditionally in generated floating-point output.

Definition at line 302 of file ios_base.h.

const fmtflags std::ios_base::showpos [static, inherited]

Generates a + sign in non-negative generated numeric output.

Definition at line 305 of file ios_base.h.

const fmtflags std::ios_base::skipws [static, inherited]

Skips leading white space before certain input operations.

Definition at line 308 of file ios_base.h.

const openmode std::ios_base::trunc [static, inherited]

Open for input. Default for ofstream.

Definition at line 389 of file ios_base.h.

const fmtflags std::ios_base::unitbuf [static, inherited]

Flushes output after each output operation.

Definition at line 311 of file ios_base.h.

const fmtflags std::ios_base::uppercase [static, inherited]

Replaces certain lowercase letters with their uppercase equivalents in generated output.

Definition at line 315 of file ios_base.h.

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

The documentation for this class was generated from the following files:

std::basic_ostream< _CharT, _Traits > Class Template Reference [I/O]

Classes

Public Types

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Static Public Member Functions

Static Public Attributes

Protected Types

Protected Member Functions

Protected Attributes

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Detailed Description

template<typename _CharT, typename _Traits> class std::basic_ostream< _CharT, _Traits >

Member Typedef Documentation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

std::basic_ostream< _CharT, _Traits > Class Template Reference
[I/O]

template<typename _CharT, typename _Traits>
class std::basic_ostream< _CharT, _Traits >