Manpages - std_numpunct.3

Table of Contents

NAME

std::numpunct< _CharT > - Primary class template numpunct.

SYNOPSIS


#include <locale_facets.h>

Inherits std::locale::facet.

Inherited by std::numpunct_byname< _CharT >.

Public Types

typedef __numpunct_cache< _CharT > __cache_type


typedef _CharT char_type
Public typedefs.

typedef basic_string*< _CharT > *string_type
Public typedefs.

Public Member Functions

numpunct (__c_locale __cloc, size_t __refs=0)
Internal constructor. Not for general use.

numpunct (__cache_type *__cache, size_t __refs=0)
Internal constructor. Not for general use.

numpunct (size_t __refs=0)
Numpunct constructor.

char_type decimal_point () const
Return decimal point character.

string_type falsename () const
Return string representation of bool false.

string grouping () const
Return grouping specification.

char_type thousands_sep () const
Return thousands separator character.

string_type truename () const
Return string representation of bool true.

Static Public Attributes

static locale::id id
Numpunct facet id.

Protected Member Functions

virtual ~numpunct ()
Destructor.

void _M_initialize_numpunct (__c_locale __cloc)

void _M_initialize_numpunct (__c_locale __cloc)

void _M_initialize_numpunct (__c_locale __cloc=0)

virtual char_type do_decimal_point () const
Return decimal point character.

virtual string_type do_falsename () const
Return string representation of bool false.

virtual string do_grouping () const
Return grouping specification.

virtual char_type do_thousands_sep () const
Return thousands separator character.

virtual string_type do_truename () const
Return string representation of bool true.

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 1673 of file locale_facets.h.

Member Typedef Documentation

template<typename _CharT > typedef __numpunct_cache<_CharT>

std::numpunct*< _CharT >::__cache_type Definition at line *1682 of file locale_facets.h.

template<typename _CharT > typedef _CharT *std::numpunct*< _CharT

>::*char_type* Public typedefs.

Definition at line 1679 of file locale_facets.h.

template<typename _CharT > typedef *basic_string*<_CharT>

std::numpunct*< _CharT >::*string_type Public typedefs.

Definition at line 1680 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 1697 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 1711 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 1725 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 1739 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 1826 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 1877 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 1851 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 1838 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 1864 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 1809 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 1783 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 1752 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 1796 of file locale_facets.h.

References std::numpunct< _CharT >::do_truename().

Member Data Documentation

template<typename _CharT > __cache_type* *std::numpunct*< _CharT

>::_M_data= [protected]= Definition at line 1685 of file locale_facets.h.

template<typename _CharT > locale::id *std::numpunct*< _CharT

>::id= [static]= Numpunct facet id.

Definition at line 1689 of file locale_facets.h.

Author

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

Author: dt

Created: 2022-02-21 Mon 12:23