:unsigned

:unsigned FLI Type Descriptor

Summary

Converts between a Lisp integer and a foreign unsigned integer.

Package

keyword

Syntax

:unsigned &optional integer-type

Arguments

integer-type⇩

The type of the unsigned integer.

Description

The FLI type :unsigned converts between a Lisp integer and a foreign unsigned integer. The optional integer-type argument specifies other kinds of unsigned integer types. See Table A comparison of Lisp and C unsigned types for a comparison between Lisp and C unsigned types.

A comparison of Lisp and C unsigned types
Lisp type	FLI type	C type
integer	`:unsigned`	`unsigned int`
fixnum	`:unsigned :byte`	`unsigned char`
fixnum	`:unsigned :char`	`unsigned char`
fixnum	`:unsigned :short`	`unsigned short`
integer	`:unsigned :int`	`unsigned int`
integer	`:unsigned :long`	`unsigned long`
fixnum	`:unsigned :short :int`	`unsigned short`
integer	`:unsigned :long :int`	`unsigned long`