:signed &optional integer-type
integer-type ::= :byte | :char | :short | :int |
:long | :long :int | :short :int
The
:signed
type converts between a Lisp integer and a foreign signed integer. The optional
integer-type
argument specifies other kinds of signed integer types. See Table A comparison of Lisp and C signed types for a comparison between Lisp and C signed types.