libstdc++
std::num_get< _CharT, _InIter > Class Template Reference
Inheritance diagram for std::num_get< _CharT, _InIter >:
[legend]

Public Types

typedef _CharT char_type
 
typedef _InIter iter_type
 

Public Member Functions

 num_get (size_t __refs=0)
 
template<typename _ValueT >
_GLIBCXX_DEFAULT_ABI_TAG _InIter _M_extract_int (_InIter __beg, _InIter __end, ios_base &__io, ios_base::iostate &__err, _ValueT &__v) const
 
iter_type get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, bool &__v) const
 
iter_type get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, void *&__v) const
 
iter_type get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, long &__v) const
 
iter_type get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned short &__v) const
 
iter_type get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned int &__v) const
 
iter_type get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned long &__v) const
 
iter_type get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, long long &__v) const
 
iter_type get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned long long &__v) const
 
iter_type get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, float &__v) const
 
iter_type get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, double &__v) const
 
iter_type get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, long double &__v) const
 

Static Public Attributes

static locale::id id
 

Protected Member Functions

virtual ~num_get ()
 
_GLIBCXX_DEFAULT_ABI_TAG iter_type _M_extract_float (iter_type, iter_type, ios_base &, ios_base::iostate &, string &) const
 
template<typename _ValueT >
_GLIBCXX_DEFAULT_ABI_TAG iter_type _M_extract_int (iter_type, iter_type, ios_base &, ios_base::iostate &, _ValueT &) const
 
template<typename _CharT2 >
__gnu_cxx::__enable_if< __is_char< _CharT2 >::__value, int >::__type _M_find (const _CharT2 *, size_t __len, _CharT2 __c) const
 
template<typename _CharT2 >
__gnu_cxx::__enable_if<!__is_char< _CharT2 >::__value, int >::__type _M_find (const _CharT2 *__zero, size_t __len, _CharT2 __c) const
 
virtual iter_type do_get (iter_type, iter_type, ios_base &, ios_base::iostate &, bool &) const
 
virtual iter_type do_get (iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, long &__v) const
 
virtual iter_type do_get (iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned short &__v) const
 
virtual iter_type do_get (iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned int &__v) const
 
virtual iter_type do_get (iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned long &__v) const
 
virtual iter_type do_get (iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, long long &__v) const
 
virtual iter_type do_get (iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned long long &__v) const
 
virtual iter_type do_get (iter_type, iter_type, ios_base &, ios_base::iostate &, float &) const
 
virtual iter_type do_get (iter_type, iter_type, ios_base &, ios_base::iostate &, double &) const
 
virtual iter_type do_get (iter_type, iter_type, ios_base &, ios_base::iostate &, long double &) const
 
virtual iter_type do_get (iter_type, iter_type, ios_base &, ios_base::iostate &, void *&) 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)
 

Detailed Description

template<typename _CharT, typename _InIter>
class std::num_get< _CharT, _InIter >

Primary class template num_get.

This facet encapsulates the code to parse and return a number from a string. It is used by the istream numeric extraction operators.

The num_get 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_get facet.

Definition at line 1960 of file locale_facets.h.

Member Typedef Documentation

◆ char_type

template<typename _CharT , typename _InIter >
typedef _CharT std::num_get< _CharT, _InIter >::char_type

Public typedefs.

Definition at line 1966 of file locale_facets.h.

◆ iter_type

template<typename _CharT , typename _InIter >
typedef _InIter std::num_get< _CharT, _InIter >::iter_type

Public typedefs.

Definition at line 1967 of file locale_facets.h.

Constructor & Destructor Documentation

◆ num_get()

template<typename _CharT , typename _InIter >
std::num_get< _CharT, _InIter >::num_get ( size_t  __refs = 0)
inlineexplicit

Constructor performs initialization.

This is the constructor provided by the standard.

Parameters
__refsPassed to the base facet class.

Definition at line 1981 of file locale_facets.h.

◆ ~num_get()

template<typename _CharT , typename _InIter >
virtual std::num_get< _CharT, _InIter >::~num_get ( )
inlineprotectedvirtual

Destructor.

Definition at line 2153 of file locale_facets.h.

Member Function Documentation

◆ do_get() [1/11]

template<typename _CharT , typename _InIter >
virtual iter_type std::num_get< _CharT, _InIter >::do_get ( iter_type  __beg,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
long &  __v 
) const
inlineprotectedvirtual

Numeric parsing.

Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.

See also
get() for more details.
Parameters
__begStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2223 of file locale_facets.h.

◆ do_get() [2/11]

template<typename _CharT , typename _InIter >
virtual iter_type std::num_get< _CharT, _InIter >::do_get ( iter_type  __beg,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
long long &  __v 
) const
inlineprotectedvirtual

Numeric parsing.

Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.

See also
get() for more details.
Parameters
__begStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2244 of file locale_facets.h.

◆ do_get() [3/11]

template<typename _CharT , typename _InIter >
virtual iter_type std::num_get< _CharT, _InIter >::do_get ( iter_type  __beg,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
unsigned int &  __v 
) const
inlineprotectedvirtual

Numeric parsing.

Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.

See also
get() for more details.
Parameters
__begStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2233 of file locale_facets.h.

◆ do_get() [4/11]

template<typename _CharT , typename _InIter >
virtual iter_type std::num_get< _CharT, _InIter >::do_get ( iter_type  __beg,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
unsigned long &  __v 
) const
inlineprotectedvirtual

Numeric parsing.

Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.

See also
get() for more details.
Parameters
__begStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2238 of file locale_facets.h.

◆ do_get() [5/11]

template<typename _CharT , typename _InIter >
virtual iter_type std::num_get< _CharT, _InIter >::do_get ( iter_type  __beg,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
unsigned long long &  __v 
) const
inlineprotectedvirtual

Numeric parsing.

Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.

See also
get() for more details.
Parameters
__begStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2249 of file locale_facets.h.

◆ do_get() [6/11]

template<typename _CharT , typename _InIter >
virtual iter_type std::num_get< _CharT, _InIter >::do_get ( iter_type  __beg,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
unsigned short &  __v 
) const
inlineprotectedvirtual

Numeric parsing.

Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.

See also
get() for more details.
Parameters
__begStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2228 of file locale_facets.h.

◆ do_get() [7/11]

template<typename _CharT , typename _InIter >
_InIter std::num_get< _CharT, _InIter >::do_get ( iter_type  __beg,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
bool &  __v 
) const
protectedvirtual

Numeric parsing.

Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.

See also
get() for more details.
Parameters
__begStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 594 of file locale_facets.tcc.

References std::ios_base::_M_getloc(), std::ios_base::boolalpha, std::ios_base::eofbit, std::ios_base::failbit, std::ios_base::flags(), and std::ios_base::goodbit.

Referenced by std::num_get< _CharT, _InIter >::get().

◆ do_get() [8/11]

template<typename _CharT , typename _InIter >
_InIter std::num_get< _CharT, _InIter >::do_get ( iter_type  __beg,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
double &  __v 
) const
protectedvirtual

Numeric parsing.

Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.

See also
get() for more details.
Parameters
__begStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 705 of file locale_facets.tcc.

References std::basic_string< _CharT, _Traits, _Alloc >::c_str(), std::ios_base::eofbit, and std::basic_string< _CharT, _Traits, _Alloc >::reserve().

◆ do_get() [9/11]

template<typename _CharT , typename _InIter >
_InIter std::num_get< _CharT, _InIter >::do_get ( iter_type  __beg,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
float &  __v 
) const
protectedvirtual

Numeric parsing.

Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.

See also
get() for more details.
Parameters
__begStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 690 of file locale_facets.tcc.

References std::basic_string< _CharT, _Traits, _Alloc >::c_str(), std::ios_base::eofbit, and std::basic_string< _CharT, _Traits, _Alloc >::reserve().

◆ do_get() [10/11]

template<typename _CharT , typename _InIter >
_InIter std::num_get< _CharT, _InIter >::do_get ( iter_type  __beg,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
long double &  __v 
) const
protectedvirtual

Numeric parsing.

Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.

See also
get() for more details.
Parameters
__begStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 737 of file locale_facets.tcc.

References std::basic_string< _CharT, _Traits, _Alloc >::c_str(), std::ios_base::eofbit, and std::basic_string< _CharT, _Traits, _Alloc >::reserve().

◆ do_get() [11/11]

template<typename _CharT , typename _InIter >
_InIter std::num_get< _CharT, _InIter >::do_get ( iter_type  __beg,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
void *&  __v 
) const
protectedvirtual

Numeric parsing.

Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.

See also
get() for more details.
Parameters
__begStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 752 of file locale_facets.tcc.

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

◆ get() [1/11]

template<typename _CharT , typename _InIter >
iter_type std::num_get< _CharT, _InIter >::get ( iter_type  __in,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
bool &  __v 
) const
inline

Numeric parsing.

Parses the input stream into the bool v. It does so by calling num_get::do_get().

If ios_base::boolalpha is set, attempts to read ctype<CharT>::truename() or ctype<CharT>::falsename(). Sets v to true or false if successful. Sets err to ios_base::failbit if reading the string fails. Sets err to ios_base::eofbit if the stream is emptied.

If ios_base::boolalpha is not set, proceeds as with reading a long, except if the value is 1, sets v to true, if the value is 0, sets v to false, and otherwise set err to ios_base::failbit.

Parameters
__inStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2007 of file locale_facets.h.

References std::num_get< _CharT, _InIter >::do_get().

◆ get() [2/11]

template<typename _CharT , typename _InIter >
iter_type std::num_get< _CharT, _InIter >::get ( iter_type  __in,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
double &  __v 
) const
inline

Numeric parsing.

Parses the input stream into the integral variable v. It does so by calling num_get::do_get().

The input characters are parsed like the scanf g specifier. The matching type length modifier is also used.

The decimal point character used is numpunct::decimal_point(). Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.

If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.

Parameters
__inStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2109 of file locale_facets.h.

References std::num_get< _CharT, _InIter >::do_get().

◆ get() [3/11]

template<typename _CharT , typename _InIter >
iter_type std::num_get< _CharT, _InIter >::get ( iter_type  __in,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
float &  __v 
) const
inline

Numeric parsing.

Parses the input stream into the integral variable v. It does so by calling num_get::do_get().

The input characters are parsed like the scanf g specifier. The matching type length modifier is also used.

The decimal point character used is numpunct::decimal_point(). Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.

If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.

Parameters
__inStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2104 of file locale_facets.h.

References std::num_get< _CharT, _InIter >::do_get().

◆ get() [4/11]

template<typename _CharT , typename _InIter >
iter_type std::num_get< _CharT, _InIter >::get ( iter_type  __in,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
long &  __v 
) const
inline

Numeric parsing.

Parses the input stream into the integral variable v. It does so by calling num_get::do_get().

Parsing is affected by the flag settings in io.

The basic parse is affected by the value of io.flags() & ios_base::basefield. If equal to ios_base::oct, parses like the scanf o specifier. Else if equal to ios_base::hex, parses like X specifier. Else if basefield equal to 0, parses like the i specifier. Otherwise, parses like d for signed and u for unsigned types. The matching type length modifier is also used.

Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.

If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.

Parameters
__inStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2044 of file locale_facets.h.

References std::num_get< _CharT, _InIter >::do_get().

◆ get() [5/11]

template<typename _CharT , typename _InIter >
iter_type std::num_get< _CharT, _InIter >::get ( iter_type  __in,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
long double &  __v 
) const
inline

Numeric parsing.

Parses the input stream into the integral variable v. It does so by calling num_get::do_get().

The input characters are parsed like the scanf g specifier. The matching type length modifier is also used.

The decimal point character used is numpunct::decimal_point(). Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.

If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.

Parameters
__inStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2114 of file locale_facets.h.

References std::num_get< _CharT, _InIter >::do_get().

◆ get() [6/11]

template<typename _CharT , typename _InIter >
iter_type std::num_get< _CharT, _InIter >::get ( iter_type  __in,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
long long &  __v 
) const
inline

Numeric parsing.

Parses the input stream into the integral variable v. It does so by calling num_get::do_get().

Parsing is affected by the flag settings in io.

The basic parse is affected by the value of io.flags() & ios_base::basefield. If equal to ios_base::oct, parses like the scanf o specifier. Else if equal to ios_base::hex, parses like X specifier. Else if basefield equal to 0, parses like the i specifier. Otherwise, parses like d for signed and u for unsigned types. The matching type length modifier is also used.

Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.

If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.

Parameters
__inStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2065 of file locale_facets.h.

References std::num_get< _CharT, _InIter >::do_get().

◆ get() [7/11]

template<typename _CharT , typename _InIter >
iter_type std::num_get< _CharT, _InIter >::get ( iter_type  __in,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
unsigned int &  __v 
) const
inline

Numeric parsing.

Parses the input stream into the integral variable v. It does so by calling num_get::do_get().

Parsing is affected by the flag settings in io.

The basic parse is affected by the value of io.flags() & ios_base::basefield. If equal to ios_base::oct, parses like the scanf o specifier. Else if equal to ios_base::hex, parses like X specifier. Else if basefield equal to 0, parses like the i specifier. Otherwise, parses like d for signed and u for unsigned types. The matching type length modifier is also used.

Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.

If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.

Parameters
__inStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2054 of file locale_facets.h.

References std::num_get< _CharT, _InIter >::do_get().

◆ get() [8/11]

template<typename _CharT , typename _InIter >
iter_type std::num_get< _CharT, _InIter >::get ( iter_type  __in,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
unsigned long &  __v 
) const
inline

Numeric parsing.

Parses the input stream into the integral variable v. It does so by calling num_get::do_get().

Parsing is affected by the flag settings in io.

The basic parse is affected by the value of io.flags() & ios_base::basefield. If equal to ios_base::oct, parses like the scanf o specifier. Else if equal to ios_base::hex, parses like X specifier. Else if basefield equal to 0, parses like the i specifier. Otherwise, parses like d for signed and u for unsigned types. The matching type length modifier is also used.

Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.

If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.

Parameters
__inStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2059 of file locale_facets.h.

References std::num_get< _CharT, _InIter >::do_get().

◆ get() [9/11]

template<typename _CharT , typename _InIter >
iter_type std::num_get< _CharT, _InIter >::get ( iter_type  __in,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
unsigned long long &  __v 
) const
inline

Numeric parsing.

Parses the input stream into the integral variable v. It does so by calling num_get::do_get().

Parsing is affected by the flag settings in io.

The basic parse is affected by the value of io.flags() & ios_base::basefield. If equal to ios_base::oct, parses like the scanf o specifier. Else if equal to ios_base::hex, parses like X specifier. Else if basefield equal to 0, parses like the i specifier. Otherwise, parses like d for signed and u for unsigned types. The matching type length modifier is also used.

Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.

If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.

Parameters
__inStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2070 of file locale_facets.h.

References std::num_get< _CharT, _InIter >::do_get().

◆ get() [10/11]

template<typename _CharT , typename _InIter >
iter_type std::num_get< _CharT, _InIter >::get ( iter_type  __in,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
unsigned short &  __v 
) const
inline

Numeric parsing.

Parses the input stream into the integral variable v. It does so by calling num_get::do_get().

Parsing is affected by the flag settings in io.

The basic parse is affected by the value of io.flags() & ios_base::basefield. If equal to ios_base::oct, parses like the scanf o specifier. Else if equal to ios_base::hex, parses like X specifier. Else if basefield equal to 0, parses like the i specifier. Otherwise, parses like d for signed and u for unsigned types. The matching type length modifier is also used.

Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.

If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.

Parameters
__inStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2049 of file locale_facets.h.

References std::num_get< _CharT, _InIter >::do_get().

◆ get() [11/11]

template<typename _CharT , typename _InIter >
iter_type std::num_get< _CharT, _InIter >::get ( iter_type  __in,
iter_type  __end,
ios_base __io,
ios_base::iostate __err,
void *&  __v 
) const
inline

Numeric parsing.

Parses the input stream into the pointer variable v. It does so by calling num_get::do_get().

The input characters are parsed like the scanf p specifier.

Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.

Note that the digit grouping effect for pointers is a bit ambiguous in the standard and shouldn't be relied on. See DR 344.

If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.

Parameters
__inStart of input stream.
__endEnd of input stream.
__ioSource of locale and flags.
__errError flags to set.
__vValue to format and insert.
Returns
Iterator after reading.

Definition at line 2147 of file locale_facets.h.

References std::num_get< _CharT, _InIter >::do_get().

Member Data Documentation

◆ id

template<typename _CharT , typename _InIter >
locale::id std::num_get< _CharT, _InIter >::id
static

Numpunct facet id.

Definition at line 1971 of file locale_facets.h.


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