Re: Macros for setting / testing / getting value components in lobject.h

[Roberto Ierusalimschy <roberto@...>]

> I overlay the double with the type code.
> 
> So the structure looks like this:
> 
> |------ first 8 bytes ----------| |------- second 8 bytes -------|
>   value other than double        type code (int) union
>   including 64-bit int                 with double
> 
> Since the size of the value object is 16 bytes anyway it doesn't
> change the overall size.

What do you gain here? The standard representation is this:

  |------ first 8 bytes ----------| |------- second 8 bytes -------|
    any value including double           type code (int)
    and 64-bit int

It occupies the same space and it is simpler...

-- Roberto