protected virtual member function
<locale>

std::moneypunct::do_neg_format

pattern do_neg_format() const;
Return format for negative monetary expressions [virtual]
Virtual protected member function in charge of returning the format for negative monetary expressions, as described in public member function neg_format (see moneypunct::neg_format for details).

Polymorphic derived classes can redefine the behavior of this function.

See also

moneypunct::neg_format
Return format of negative monetary expressions (public member function)

C++