protected virtual member function
<locale>
std::numpunct::do_decimal_point
char_type do_decimal_point() const;
Return decimal point character [virtual]
Virtual protected member function called by numpunct::decimal_point to obtain the character used to represent a decimal point.
Polymorphic derived classes can overwrite the behavior of this function.
See numpunct::decimal_point for its default behavior in numpunct's standard specializations.