std::moneypunct<CharT,International>::pos_format,do_pos_format,neg_format,do_neg_format (3) - Linux Manuals

std::moneypunct<CharT,International>::pos_format,do_pos_format,neg_format,do_neg_format: std::moneypunct<CharT,International>::pos_format,do_pos_format,neg_format,do_neg_format

NAME

std::moneypunct<CharT,International>::pos_format,do_pos_format,neg_format,do_neg_format - std::moneypunct<CharT,International>::pos_format,do_pos_format,neg_format,do_neg_format

Synopsis

Defined in header <locale>
public: (1)
pattern pos_format() const;
public: (2)
pattern neg_format() const;
protected: (3)
virtual pattern do_pos_format() const;
protected: (4)
virtual pattern do_neg_format() const;

1) Public member function, calls the member function do_pos_format of the most derived class.
2) Public member function, calls the member function do_neg_format of the most derived class.
3) Returns the format structure (of type std::money_base::format) which describes the formatting of positive monetary values.
4) Returns the format structure (of type std::money_base::format) which describes the formatting of negative monetary values.
The standard specializations of std::moneypunct return the pattern {symbol, sign, none, value}

Return value

The object of type std::money_base::format describing the formatting used by this locale.

Notes

While std::money_put uses pos_format for formatting positive values and neg_format for formatting negative values, std::money_get uses neg_format for parsing all monetary values: it assumes that neg_format is compatible with pos_format.

Example

// Run this code

  #include <locale>
  #include <iostream>
  #include <iomanip>

  struct my_punct : std::moneypunct_byname<char, false> {
      my_punct(const char* name) : moneypunct_byname(name) {}
      pattern do_pos_format() const { return { {value, space, symbol, sign} };}
      pattern do_neg_format() const { return { {value, space, symbol, sign} };}
  };
  int main()
  {
      std::cout.imbue(std::locale("en_US.utf8"));
      std::cout << "american locale: " << std::showbase
                << std::put_money(12345678.0) << '\n';

      std::cout.imbue(std::locale(std::cout.getloc(), new my_punct("en_US.utf8")));
      std::cout << "locale with modified moneypunct:\n"
                << std::put_money(12345678.0) << '\n'
                << std::put_money(-12345678.0) << '\n';
  }

Output:

  american locale: $123,456.78
  locale with modified moneypunct:
  123,456.78 $
  123,456.78 $-