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:const

FLI type descriptor
Summary

Corresponds to the C const type.

Syntax

:const &optional type

Arguments

type

The type of the constant. The default is :int.

Description

The FLI :const type corresponds to the C const type qualifier. The behavior of a :const is exactly the same as the behavior of its type, and it is only included to ease the readability of FLI code and for naming conventions.

Example

In the following example a constant is allocated and set equal to 3.141.

(setq pi1 (fli:allocate-foreign-object
           :type '(:const :float)))
(setf (fli:dereference pi1) 3.141))
See also

:volatile
Immediate types

LispWorks Foreign Language Interface User Guide and Reference Manual - 29 Sep 2017

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