6 Type Reference

:function

FLI type descriptor

Summary

Converts between Lisp and the Cfunction type.

Package

fli

Syntax

:function &optional arg-spec return-spec

Arguments

arg-spec: A list of function argument types.
return-spec: A list of function return types.

Description

The FLI:function type allows for conversion from the Cfunction type. It is typically used in conjunction with the:pointer type to reference an existing foreign function.

Example

The following code lines present a definition of a pointer to a function type, and a corresponding C definition of the type. The function type is defined for a function which takes as its arguments an integer and a pointer to a void, and returns an integer value.

(:pointer (:function (:int (:pointer :void)) :int))

int (*)( int, void * )

See Also
: :pointer