std::num_put< _CharT, _OutIter >(3)

NAME
std::num_put< _CharT, _OutIter > - Primary class template num_put.

SYNOPSIS

#include <locale>

Inherits std::locale::facet.

  Public Types

typedef _CharT char_type
Public typedefs.
typedef _OutIter iter_type
Public typedefs.

  Public Member Functions
num_put (size_t __refs=0)
Constructor performs initialization.
template<typename _ValueT> _OutIter _M_insert_float (_OutIter __s, ios_base &__io, _CharT __fill, char __mod, _ValueT __v) const
template<typename _ValueT> _OutIter _M_insert_int (_OutIter __s, ios_base &__io, _CharT __fill, _ValueT __v) const
iter_type put (iter_type __s, ios_base &__io, char_type __fill, bool __v) const
Numeric formatting.
iter_type put (iter_type __s, ios_base &__io, char_type __fill, const void *__v) const
Numeric formatting.

iter_type put (iter_type __s, ios_base &__io, char_type __fill, long __v) const
Numeric formatting.
iter_type put (iter_type __s, ios_base &__io, char_type __fill, unsigned long __v) const
Numeric formatting.
iter_type put (iter_type __s, ios_base &__io, char_type __fill, long long __v) const
Numeric formatting.
iter_type put (iter_type __s, ios_base &__io, char_type __fill, unsigned long long __v) const
Numeric formatting.

iter_type put (iter_type __s, ios_base &__io, char_type __fill, double __v) const
Numeric formatting.
iter_type put (iter_type __s, ios_base &__io, char_type __fill, long double __v) const
Numeric formatting.

  Static Public Attributes
static locale::id id
Numpunct facet id.

  Protected Member Functions
virtual ~num_put ()
Destructor.
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 iter_type do_put (iter_type __s, ios_base &__io, char_type __fill, bool __v) const
Numeric formatting.
virtual iter_type do_put (iter_type __s, ios_base &__io, char_type __fill, long __v) const
Numeric formatting.
virtual iter_type do_put (iter_type __s, ios_base &__io, char_type __fill, unsigned long __v) const
Numeric formatting.
virtual iter_type do_put (iter_type __s, ios_base &__io, char_type __fill, long long __v) const
Numeric formatting.
virtual iter_type do_put (iter_type __s, ios_base &__io, char_type __fill, unsigned long long __v) const
Numeric formatting.
virtual iter_type do_put (iter_type, ios_base &, char_type, double) const
Numeric formatting.
virtual iter_type do_put (iter_type, ios_base &, char_type, long double) const
Numeric formatting.
virtual iter_type do_put (iter_type, ios_base &, char_type, const void *) const
Numeric formatting.

  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 _OutIter>
class std::num_put< _CharT, _OutIter >"Primary class template num_put. 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.

Member Typedef Documentation

  template<typename _CharT, typename _OutIter> typedef _CharT std::num_put< _CharT, _OutIter >::char_type

Public typedefs.

  template<typename _CharT, typename _OutIter> typedef _OutIter std::num_put< _CharT, _OutIter >::iter_type

Public typedefs.

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.

  template<typename _CharT, typename _OutIter> virtual std::num_put< _CharT, _OutIter >::~num_put () [inline], [protected], [virtual]

Destructor.

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, bool __v) const [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.

References std::ios_base::_M_getloc(), std::ios_base::adjustfield, std::ios_base::boolalpha, std::ios_base::flags(), std::ios_base::fmtflags, std::ios_base::left, and std::ios_base::width().

Referenced by std::num_put< _CharT, ostreambuf_iterator< _CharT, _Traits > >::put(), std::num_put< _CharT, ostreambuf_iterator< _CharT, _Traits > >::put(), std::num_put< _CharT, ostreambuf_iterator< _CharT, _Traits > >::put(), std::num_put< _CharT, ostreambuf_iterator< _CharT, _Traits > >::put(), std::num_put< _CharT, ostreambuf_iterator< _CharT, _Traits > >::put(), std::num_put< _CharT, ostreambuf_iterator< _CharT, _Traits > >::put(), std::num_put< _CharT, ostreambuf_iterator< _CharT, _Traits > >::put(), and std::num_put< _CharT, ostreambuf_iterator< _CharT, _Traits > >::put().

  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]

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.

  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]

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.

  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]

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.

  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]

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.

  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 [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.

References std::ios_base::basefield, std::ios_base::flags(), std::ios_base::fmtflags, std::ios_base::hex, std::ios_base::showbase, 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, double __v) const [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.

  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 [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.

  template<typename _CharT, typename _OutIter> iter_type std::num_put< _CharT, _OutIter >::put (iter_type __s, ios_base & __io, 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.

Referenced by std::basic_ostream< _CharT, _Traits >::operator<<().

  template<typename _CharT, typename _OutIter> iter_type std::num_put< _CharT, _OutIter >::put (iter_type __s, ios_base & __io, 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.

  template<typename _CharT, typename _OutIter> iter_type std::num_put< _CharT, _OutIter >::put (iter_type __s, ios_base & __io, 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.

The decimal point character used is numpunct::decimal_point(). Thousands separators are inserted according to numpunct::grouping() and numpunct::thousands_sep().

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.

  template<typename _CharT, typename _OutIter> iter_type std::num_put< _CharT, _OutIter >::put (iter_type __s, ios_base & __io, 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.

The decimal point character used is numpunct::decimal_point(). Thousands separators are inserted according to numpunct::grouping() and numpunct::thousands_sep().

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.

  template<typename _CharT, typename _OutIter> iter_type std::num_put< _CharT, _OutIter >::put (iter_type __s, ios_base & __io, char_type __fill, long 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.

The decimal point character used is numpunct::decimal_point(). Thousands separators are inserted according to numpunct::grouping() and numpunct::thousands_sep().

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.

  template<typename _CharT, typename _OutIter> iter_type std::num_put< _CharT, _OutIter >::put (iter_type __s, ios_base & __io, char_type __fill, long 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.

The decimal point character used is numpunct::decimal_point(). Thousands separators are inserted according to numpunct::grouping() and numpunct::thousands_sep().

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.

  template<typename _CharT, typename _OutIter> iter_type std::num_put< _CharT, _OutIter >::put (iter_type __s, ios_base & __io, char_type __fill, unsigned 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.

The decimal point character used is numpunct::decimal_point(). Thousands separators are inserted according to numpunct::grouping() and numpunct::thousands_sep().

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.

  template<typename _CharT, typename _OutIter> iter_type std::num_put< _CharT, _OutIter >::put (iter_type __s, ios_base & __io, char_type __fill, unsigned long 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.

The decimal point character used is numpunct::decimal_point(). Thousands separators are inserted according to numpunct::grouping() and numpunct::thousands_sep().

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.

Member Data Documentation

  template<typename _CharT, typename _OutIter> locale::id std::num_put< _CharT, _OutIter >::id [static]

Numpunct facet id.

Author

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