FLI type descriptor

Summary

Converts between a Lisp integer and a foreign signed integer.

Syntax

:signed &optional integer-type

integer-type
 ::= :byte | :char | :short | :int |

              :long | :long :int | :short :int

Arguments

integer-type

The type of the signed integer.

Description

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.

A comparison of Lisp and C signed types

Lisp type	FLI type	C type
integer	:signed	signed int
fixnum	:signed :byte	signed char
fixnum	:signed :char	signed char
fixnum	:signed :short	signed short
integer	:signed :int	signed int
integer	:signed :long	signed long
fixnum	:signed :short :int	signed short
integer	:signed :long :int	signed long

See also

cast-integer
:unsigned