std::numpunct(3)std::numpunct(3)NAMEstd::numpunct-
Numpunct facet.
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
template<> void _M_initialize_numpunct (__c_locale __cloc)
template<> void _M_initialize_numpunct (__c_locale __cloc)
char_type decimal_point () const
string_type falsename () const
string grouping () const
numpunct (__c_locale __cloc, size_t __refs=0)
numpunct (__cache_type *__cache, size_t __refs=0)
numpunct (size_t __refs=0)
char_type thousands_sep () const
string_type truename () const
Static Public Attributes
static locale::id id
Protected Member Functions
void _M_initialize_numpunct (__c_locale __cloc=NULL)
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
virtual ~numpunct ()
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 ()
Protected Attributes
__cache_type * _M_data
Friends
class locale::_Impl
Detailed Description
template<typename _CharT> class std::numpunct< _CharT >
Numpunct facet.
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 1636 of file locale_facets.h.
Member Typedef Documentation
template<typename _CharT > typedef _CharT std::numpunct< _CharT
>::char_type
Public typedefs.
Reimplemented in std::numpunct_byname< _CharT >.
Definition at line 1642 of file locale_facets.h.
template<typename _CharT > typedef basic_string<_CharT> std::numpunct<
_CharT >::string_type
Public typedefs.
Reimplemented in std::numpunct_byname< _CharT >.
Definition at line 1643 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 1660 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 1673 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 1687 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 1701 of file locale_facets.h.
References std::numpunct< _CharT >::do_decimal_point().
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 1788 of file locale_facets.h.
Referenced by std::numpunct< _CharT >::decimal_point().
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 1839 of file locale_facets.h.
Referenced by std::numpunct< _CharT >::falsename().
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 1813 of file locale_facets.h.
Referenced by std::numpunct< _CharT >::grouping().
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 1800 of file locale_facets.h.
Referenced by std::numpunct< _CharT >::thousands_sep().
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 1826 of file locale_facets.h.
Referenced by std::numpunct< _CharT >::truename().
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 1771 of file locale_facets.h.
References std::numpunct< _CharT >::do_falsename().
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 '\003\002' 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 1745 of file locale_facets.h.
References std::numpunct< _CharT >::do_grouping().
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 1714 of file locale_facets.h.
References std::numpunct< _CharT >::do_thousands_sep().
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 1758 of file locale_facets.h.
References std::numpunct< _CharT >::do_truename().
Member Data Documentation
template<typename _CharT > locale::id std::numpunct< _CharT >::id [inline,
static]
Numpunct facet id.
Definition at line 1652 of file locale_facets.h.
Author
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libstdc++ 22 Nov 2013 std::numpunct(3)
