std::num_put(3)std::num_put(3)NAMEstd::num_put-
Facet for converting numbers to strings.
SYNOPSIS
Inherits std::locale::facet.
Public Member Functions
num_put (size_t __refs=0)
iter_type put (iter_type __s, ios_base &__f, char_type __fill, const
void *__v) const
iter_type put (iter_type __s, ios_base &__f, char_type __fill, bool
__v) const
Static Public Attributes
static locale::id id
Protected Member Functions
void _M_group_float (const char *__grouping, size_t __grouping_size,
char_type __sep, const char_type *__p, char_type *__new, char_type
*__cs, int &__len) const
void _M_group_int (const char *__grouping, size_t __grouping_size,
char_type __sep, ios_base &__io, char_type *__new, char_type *__cs,
int &__len) const
template<typename _ValueT > iter_type _M_insert_float (iter_type,
ios_base &__io, char_type __fill, char __mod, _ValueT __v) const
template<typename _ValueT > iter_type _M_insert_int (iter_type,
ios_base &__io, char_type __fill, _ValueT __v) const
void _M_pad (char_type __fill, streamsize __w, ios_base &__io,
char_type *__new, const char_type *__cs, int &__len) const
virtual ~num_put ()
Static Protected Member Functions
static __c_locale _S_clone_c_locale (__c_locale &__cloc)
static void _S_create_c_locale (__c_locale &__cloc, const char *__s,
__c_locale __old=0)
static void _S_destroy_c_locale (__c_locale &__cloc)
static __c_locale _S_get_c_locale ()
static const char * _S_get_c_name ()
Friends
class locale::_Impl
typedef _CharT char_type
typedef _OutIter iter_type
iter_type put (iter_type __s, ios_base &__f, char_type __fill, long
double __v) const
iter_type put (iter_type __s, ios_base &__f, char_type __fill, double
__v) const
iter_type put (iter_type __s, ios_base &__f, char_type __fill, unsigned
long long __v) const
iter_type put (iter_type __s, ios_base &__f, char_type __fill, long
long __v) const
iter_type put (iter_type __s, ios_base &__f, char_type __fill, unsigned
long __v) const
iter_type put (iter_type __s, ios_base &__f, char_type __fill, long
__v) const
virtual iter_type do_put (iter_type, ios_base &, char_type __fill,
const void *__v) const
virtual iter_type do_put (iter_type, ios_base &, char_type __fill, long
double __v) const
virtual iter_type do_put (iter_type, ios_base &, char_type __fill,
double __v) const
virtual iter_type do_put (iter_type __s, ios_base &__io, char_type
__fill, unsigned long long __v) const
virtual iter_type do_put (iter_type __s, ios_base &__io, char_type
__fill, long long __v) const
virtual iter_type do_put (iter_type __s, ios_base &__io, char_type
__fill, unsigned long __v) const
virtual iter_type do_put (iter_type __s, ios_base &__io, char_type
__fill, long __v) const
virtual iter_type do_put (iter_type, ios_base &, char_type __fill, bool
__v) const
Detailed Description
template<typename _CharT, typename _OutIter> class std::num_put< _CharT,
_OutIter >
Facet for converting numbers to strings.
This facet encapsulates the code to convert a number to a string. It is
used by the ostream numeric insertion operators.
The num_put template uses protected virtual functions to provide the
actual results. The public accessors forward the call to the virtual
functions. These virtual functions are hooks for developers to
implement the behavior they require from the num_put facet.
Definition at line 2245 of file locale_facets.h.
Member Typedef Documentation
template<typename _CharT , typename _OutIter > typedef _CharT std::num_put<
_CharT, _OutIter >::char_type
Public typedefs.
Definition at line 2251 of file locale_facets.h.
template<typename _CharT , typename _OutIter > typedef _OutIter
std::num_put< _CharT, _OutIter >::iter_type
Public typedefs.
Definition at line 2252 of file locale_facets.h.
Constructor & Destructor Documentation
template<typename _CharT , typename _OutIter > std::num_put< _CharT,
_OutIter >::num_put (size_t __refs = 0) [inline, explicit]
Constructor performs initialization. This is the constructor provided
by the standard.
Parameters:
refs Passed to the base facet class.
Definition at line 2266 of file locale_facets.h.
template<typename _CharT , typename _OutIter > virtual std::num_put<
_CharT, _OutIter >::~num_put () [inline, protected, virtual]
Destructor.
Definition at line 2445 of file locale_facets.h.
Member Function Documentation
template<typename _CharT , typename _OutIter > _OutIter std::num_put<
_CharT, _OutIter >::do_put (iter_type __s, ios_base & __io, char_type
__fill, const void * __v) const [inline, protected, virtual]
Public typedefs.
Definition at line 1147 of file locale_facets.tcc.
References std::ios_base::flags(), std::ios_base::hex, and
std::ios_base::uppercase.
template<typename _CharT , typename _OutIter > _OutIter std::num_put<
_CharT, _OutIter >::do_put (iter_type __s, ios_base & __io, char_type
__fill, long double __v) const [inline, protected, virtual]
Public typedefs.
Definition at line 1140 of file locale_facets.tcc.
template<typename _CharT , typename _OutIter > _OutIter std::num_put<
_CharT, _OutIter >::do_put (iter_type __s, ios_base & __io, char_type
__fill, double __v) const [inline, protected, virtual]
Public typedefs.
Definition at line 1126 of file locale_facets.tcc.
template<typename _CharT , typename _OutIter > virtual iter_type
std::num_put< _CharT, _OutIter >::do_put (iter_type __s, ios_base &
__io, char_type __fill, unsigned long long __v) const [inline,
protected, virtual]
Public typedefs.
Definition at line 2480 of file locale_facets.h.
template<typename _CharT , typename _OutIter > virtual iter_type
std::num_put< _CharT, _OutIter >::do_put (iter_type __s, ios_base &
__io, char_type __fill, long long __v) const [inline, protected,
virtual]
Public typedefs.
Definition at line 2475 of file locale_facets.h.
template<typename _CharT , typename _OutIter > virtual iter_type
std::num_put< _CharT, _OutIter >::do_put (iter_type __s, ios_base &
__io, char_type __fill, unsigned long __v) const [inline, protected,
virtual]
Public typedefs.
Definition at line 2469 of file locale_facets.h.
template<typename _CharT , typename _OutIter > virtual iter_type
std::num_put< _CharT, _OutIter >::do_put (iter_type __s, ios_base &
__io, char_type __fill, long __v) const [inline, protected, virtual]
Public typedefs.
Definition at line 2465 of file locale_facets.h.
template<typename _CharT , typename _OutIter > _OutIter std::num_put<
_CharT, _OutIter >::do_put (iter_type __s, ios_base & __io, char_type
__fill, bool __v) const [inline, protected, virtual]
Numeric formatting. These functions do the work of formatting numeric
values and inserting them into a stream. This function is a hook for
derived classes to change the value returned.
Parameters:
s Stream to write to.
io Source of locale and flags.
fill Char_type to use for filling.
v Value to format and insert.
Returns:
Iterator after writing.
Definition at line 1074 of file locale_facets.tcc.
References std::ios_base::_M_getloc(), std::ios_base::adjustfield,
std::ios_base::boolalpha, std::ios_base::flags(), std::ios_base::left,
and std::ios_base::width().
Referenced by std::num_put< _CharT, _OutIter >::put().
template<typename _CharT , typename _OutIter > iter_type std::num_put<
_CharT, _OutIter >::put (iter_type __s, ios_base & __f, char_type
__fill, const void * __v) const [inline]
Numeric formatting. Formats the pointer value v and inserts it into a
stream. It does so by calling num_put::do_put().
This function formats v as an unsigned long with ios_base::hex and
ios_base::showbase set.
Parameters:
s Stream to write to.
io Source of locale and flags.
fill Char_type to use for filling.
v Value to format and insert.
Returns:
Iterator after writing.
Definition at line 2414 of file locale_facets.h.
References std::num_put< _CharT, _OutIter >::do_put().
template<typename _CharT , typename _OutIter > iter_type std::num_put<
_CharT, _OutIter >::put (iter_type __s, ios_base & __f, char_type
__fill, long double __v) const [inline]
Public typedefs.
Definition at line 2393 of file locale_facets.h.
References std::num_put< _CharT, _OutIter >::do_put().
template<typename _CharT , typename _OutIter > iter_type std::num_put<
_CharT, _OutIter >::put (iter_type __s, ios_base & __f, char_type
__fill, double __v) const [inline]
Numeric formatting. Formats the floating point value v and inserts it
into a stream. It does so by calling num_put::do_put().
Formatting is affected by the flag settings in io.
The basic format is affected by the value of io.flags() &
ios_base::floatfield. If equal to ios_base::fixed, formats like the
printf f specifier. Else if equal to ios_base::scientific, formats like
e or E with ios_base::uppercase unset or set respectively. Otherwise,
formats like g or G depending on uppercase. Note that if both fixed and
scientific are set, the effect will also be like g or G.
The output precision is given by io.precision(). This precision is
capped at numeric_limits::digits10 + 2 (different for double and long
double). The default precision is 6.
If ios_base::showpos is set, '+' is output before positive values. If
ios_base::showpoint is set, a decimal point will always be output.
Thousands separators are inserted according to numpunct::grouping() and
numpunct::thousands_sep(). The decimal point character used is
numpunct::decimal_point().
If io.width() is non-zero, enough fill characters are inserted to make
the result at least that wide. If (io.flags() & ios_base::adjustfield)
== ios_base::left, result is padded at the end. If ios_base::internal,
then padding occurs immediately after either a '+' or '-' or after '0x'
or '0X'. Otherwise, padding occurs at the beginning.
Parameters:
s Stream to write to.
io Source of locale and flags.
fill Char_type to use for filling.
v Value to format and insert.
Returns:
Iterator after writing.
Definition at line 2389 of file locale_facets.h.
References std::num_put< _CharT, _OutIter >::do_put().
template<typename _CharT , typename _OutIter > iter_type std::num_put<
_CharT, _OutIter >::put (iter_type __s, ios_base & __f, char_type
__fill, unsigned long long __v) const [inline]
Public typedefs.
Definition at line 2340 of file locale_facets.h.
References std::num_put< _CharT, _OutIter >::do_put().
template<typename _CharT , typename _OutIter > iter_type std::num_put<
_CharT, _OutIter >::put (iter_type __s, ios_base & __f, char_type
__fill, long long __v) const [inline]
Public typedefs.
Definition at line 2336 of file locale_facets.h.
References std::num_put< _CharT, _OutIter >::do_put().
template<typename _CharT , typename _OutIter > iter_type std::num_put<
_CharT, _OutIter >::put (iter_type __s, ios_base & __f, char_type
__fill, unsigned long __v) const [inline]
Public typedefs.
Definition at line 2330 of file locale_facets.h.
References std::num_put< _CharT, _OutIter >::do_put().
template<typename _CharT , typename _OutIter > iter_type std::num_put<
_CharT, _OutIter >::put (iter_type __s, ios_base & __f, char_type
__fill, long __v) const [inline]
Numeric formatting. Formats the integral value v and inserts it into a
stream. It does so by calling num_put::do_put().
Formatting is affected by the flag settings in io.
The basic format is affected by the value of io.flags() &
ios_base::basefield. If equal to ios_base::oct, formats like the printf
o specifier. Else if equal to ios_base::hex, formats like x or X with
ios_base::uppercase unset or set respectively. Otherwise, formats like
d, ld, lld for signed and u, lu, llu for unsigned values. Note that if
both oct and hex are set, neither will take effect.
If ios_base::showpos is set, '+' is output before positive values. If
ios_base::showbase is set, '0' precedes octal values (except 0) and
'0[xX]' precedes hex values.
Thousands separators are inserted according to numpunct::grouping() and
numpunct::thousands_sep(). The decimal point character used is
numpunct::decimal_point().
If io.width() is non-zero, enough fill characters are inserted to make
the result at least that wide. If (io.flags() & ios_base::adjustfield)
== ios_base::left, result is padded at the end. If ios_base::internal,
then padding occurs immediately after either a '+' or '-' or after '0x'
or '0X'. Otherwise, padding occurs at the beginning.
Parameters:
s Stream to write to.
io Source of locale and flags.
fill Char_type to use for filling.
v Value to format and insert.
Returns:
Iterator after writing.
Definition at line 2326 of file locale_facets.h.
References std::num_put< _CharT, _OutIter >::do_put().
template<typename _CharT , typename _OutIter > iter_type std::num_put<
_CharT, _OutIter >::put (iter_type __s, ios_base & __f, char_type
__fill, bool __v) const [inline]
Numeric formatting. Formats the boolean v and inserts it into a stream.
It does so by calling num_put::do_put().
If ios_base::boolalpha is set, writes ctype<CharT>::truename() or
ctype<CharT>::falsename(). Otherwise formats v as an int.
Parameters:
s Stream to write to.
io Source of locale and flags.
fill Char_type to use for filling.
v Value to format and insert.
Returns:
Iterator after writing.
Definition at line 2284 of file locale_facets.h.
References std::num_put< _CharT, _OutIter >::do_put().
Member Data Documentation
template<typename _CharT , typename _OutIter > locale::id std::num_put<
_CharT, _OutIter >::id [inline, static]
Numpunct facet id.
Definition at line 2256 of file locale_facets.h.
Author
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libstdc++ 22 Nov 2013 std::num_put(3)
