1.7 KiB
1.7 KiB
[syserr.errcat.derived]
19 Diagnostics library [diagnostics]
19.5 System error support [syserr]
19.5.3 Class error_category [syserr.errcat]
19.5.3.4 Program-defined classes derived from error_category [syserr.errcat.derived]
virtual const char* name() const noexcept = 0;
Returns: A string naming the error category.
virtual error_condition default_error_condition(int ev) const noexcept;
Returns: An object of type error_condition that corresponds to ev.
virtual bool equivalent(int code, const error_condition& condition) const noexcept;
Returns: true if, for the category of error represented by *this, code is considered equivalent to condition; otherwise, false.
virtual bool equivalent(const error_code& code, int condition) const noexcept;
Returns: true if, for the category of error represented by *this, code is considered equivalent to condition; otherwise, false.