std::numpunct< _CharT >(3) Library Functions Manual std::numpunct< _CharT >(3)
NAME
std::numpunct< _CharT > -
SYNOPSIS
Inherits std::locale::facet.
Inherited by std::numpunct_byname< _CharT >.
Public Types
typedef __numpunct_cache< _CharT > __cache_type
typedef _CharT char_type
typedef basic_string< _CharT > string_type
Public Member Functions
numpunct (size_t __refs=0)
numpunct (__cache_type *__cache, size_t __refs=0)
numpunct (__c_locale __cloc, size_t __refs=0)
char_type decimal_point () const
string_type falsename () const
string grouping () const
char_type thousands_sep () const
string_type truename () const
Static Public Attributes
static locale::id id
Protected Member Functions
virtual ~numpunct ()
void _M_initialize_numpunct (__c_locale __cloc=0)
template<> void _M_initialize_numpunct (__c_locale __cloc)
template<> void _M_initialize_numpunct (__c_locale __cloc)
virtual char_type do_decimal_point () const
virtual string_type do_falsename () const
virtual string do_grouping () const
virtual char_type do_thousands_sep () const
virtual string_type do_truename () const
Static Protected Member Functions
static __c_locale _S_clone_c_locale (__c_locale &__cloc) throw ()
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 () throw ()
static __c_locale _S_lc_ctype_c_locale (__c_locale __cloc, const char *__s)
Protected Attributes
__cache_type * _M_data
Detailed Description
template<typename _CharT>class std::numpunct< _CharT >
Primary class template numpunct.
This facet stores several pieces of information related to printing and scanning numbers, such as the decimal point character. It takes a
template parameter specifying the char type. The numpunct facet is used by streams for many I/O operations involving numbers.
The numpunct 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 a numpunct facet.
Definition at line 1641 of file locale_facets.h.
Member Typedef Documentation
template<typename _CharT > typedef _CharT std::numpunct< _CharT >::char_type
Public typedefs.
Definition at line 1647 of file locale_facets.h.
template<typename _CharT > typedef basic_string<_CharT> std::numpunct< _CharT >::string_type
Public typedefs.
Definition at line 1648 of file locale_facets.h.
Constructor &; Destructor Documentation
template<typename _CharT > std::numpunct< _CharT >::numpunct (size_t__refs = 0) [inline], [explicit]
Numpunct constructor.
Parameters:
__refs Refcount to pass to the base class.
Definition at line 1665 of file locale_facets.h.
template<typename _CharT > std::numpunct< _CharT >::numpunct (__cache_type *__cache, size_t__refs = 0) [inline], [explicit]
Internal constructor. Not for general use. This is a constructor for use by the library itself to set up the predefined locale facets.
Parameters:
__cache __numpunct_cache object.
__refs Refcount to pass to the base class.
Definition at line 1679 of file locale_facets.h.
template<typename _CharT > std::numpunct< _CharT >::numpunct (__c_locale__cloc, size_t__refs = 0) [inline], [explicit]
Internal constructor. Not for general use. This is a constructor for use by the library itself to set up new locales.
Parameters:
__cloc The C locale.
__refs Refcount to pass to the base class.
Definition at line 1693 of file locale_facets.h.
template<typename _CharT > virtual std::numpunct< _CharT >::~numpunct () [protected], [virtual]
Destructor.
Member Function Documentation
template<typename _CharT > char_type std::numpunct< _CharT >::decimal_point () const [inline]
Return decimal point character. This function returns a char_type to use as a decimal point. It does so by returning returning
numpunct<char_type>::do_decimal_point().
Returns:
char_type representing a decimal point.
Definition at line 1707 of file locale_facets.h.
template<typename _CharT > virtual char_type std::numpunct< _CharT >::do_decimal_point () const [inline], [protected], [virtual]
Return decimal point character. Returns a char_type to use as a decimal point. This function is a hook for derived classes to change the
value returned.
Returns:
char_type representing a decimal point.
Definition at line 1794 of file locale_facets.h.
template<typename _CharT > virtual string_type std::numpunct< _CharT >::do_falsename () const [inline], [protected], [virtual]
Return string representation of bool false. Returns a string_type containing the text representation for false bool variables. This
function is a hook for derived classes to change the value returned.
Returns:
string_type representing printed form of false.
Definition at line 1845 of file locale_facets.h.
template<typename _CharT > virtual string std::numpunct< _CharT >::do_grouping () const [inline], [protected], [virtual]
Return grouping specification. Returns a string representing groupings for the integer part of a number. This function is a hook for
derived classes to change the value returned.
See Also:
grouping() for details.
Returns:
String representing grouping specification.
Definition at line 1819 of file locale_facets.h.
template<typename _CharT > virtual char_type std::numpunct< _CharT >::do_thousands_sep () const [inline], [protected], [virtual]
Return thousands separator character. Returns a char_type to use as a thousands separator. This function is a hook for derived classes to
change the value returned.
Returns:
char_type representing a thousands separator.
Definition at line 1806 of file locale_facets.h.
template<typename _CharT > virtual string_type std::numpunct< _CharT >::do_truename () const [inline], [protected], [virtual]
Return string representation of bool true. Returns a string_type containing the text representation for true bool variables. This function
is a hook for derived classes to change the value returned.
Returns:
string_type representing printed form of true.
Definition at line 1832 of file locale_facets.h.
template<typename _CharT > string_type std::numpunct< _CharT >::falsename () const [inline]
Return string representation of bool false. This function returns a string_type containing the text representation for false bool
variables. It does so by calling numpunct<char_type>::do_falsename().
Returns:
string_type representing printed form of false.
Definition at line 1777 of file locale_facets.h.
template<typename _CharT > string std::numpunct< _CharT >::grouping () const [inline]
Return grouping specification. This function returns a string representing groupings for the integer part of a number. Groupings indicate
where thousands separators should be inserted in the integer part of a number.
Each char in the return string is interpret as an integer rather than a character. These numbers represent the number of digits in a group.
The first char in the string represents the number of digits in the least significant group. If a char is negative, it indicates an
unlimited number of digits for the group. If more chars from the string are required to group a number, the last char is used repeatedly.
For example, if the grouping() returns ' 03 02' and is applied to the number 123456789, this corresponds to 12,34,56,789. Note that if
the string was '32', this would put more than 50 digits into the least significant group if the character set is ASCII.
The string is returned by calling numpunct<char_type>::do_grouping().
Returns:
string representing grouping specification.
Definition at line 1751 of file locale_facets.h.
template<typename _CharT > char_type std::numpunct< _CharT >::thousands_sep () const [inline]
Return thousands separator character. This function returns a char_type to use as a thousands separator. It does so by returning returning
numpunct<char_type>::do_thousands_sep().
Returns:
char_type representing a thousands separator.
Definition at line 1720 of file locale_facets.h.
template<typename _CharT > string_type std::numpunct< _CharT >::truename () const [inline]
Return string representation of bool true. This function returns a string_type containing the text representation for true bool variables.
It does so by calling numpunct<char_type>::do_truename().
Returns:
string_type representing printed form of true.
Definition at line 1764 of file locale_facets.h.
Member Data Documentation
template<typename _CharT > locale::id std::numpunct< _CharT >::id [static]
Numpunct facet id.
Definition at line 1657 of file locale_facets.h.
Author
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libstdc++ Tue Jun 10 2014 std::numpunct< _CharT >(3)