Scans for a double value from a hexadecimal representation, returning a found value by reference.
- iOS 2.0+
- macOS 10.5+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
Upon return, contains the scanned value. Contains
–HUGEon overflow, or
true if the receiver finds a valid double-point representation, otherwise
false. Overflow or underflow are both considered valid floating-point representations.
This corresponds to
%A formatting. The hexadecimal double representation must be preceded by
Skips past excess digits in the case of overflow, so the scanner’s position is past the entire floating-point representation.
Invoke this method with
result to simply scan past a hexadecimal double representation.