[PD-dev] pointers

[Alexandre Quessy]

Hi,
I think a t_pointer * is a must in a mature dataflow software. Let's
face it : it is sometimes necessary.

a

2007/6/23, Mathieu Bouchard <matju at artengine.ca>:
>
> GEM, PDP, GridFlow, all use fake pointers. That is, pd defines A_POINTER
> as being a t_gpointer * and all of the above externals disregard this
> completely and send something else. It's because pd provides no other
> sensible means to send a pointer.
>
> Older versions of GridFlow were sending a pointer as 2 floats of integer
> value, and I was going to make it 3 floats when beginning to support
> 64-bit, but thought that although misusing A_POINTER was more evil in my
> book, at least it's being done with passing only one atom around, and I'm
> also happy to be doing the same evil as everybody else too.
>
> (I could have tried a plain reinterpret_cast<> so that it'd be 1 float in
> 32-bit or 2 floats in 64-bit, but I didn't want to think of the special
> float values such as +0, -0, +inf, -inf, NaN, denormals, and anything
> else. It could've been fine, but I didn't want to have to think about it.)
>
>   _ _ __ ___ _____ ________ _____________ _____________________ ...
> | Mathieu Bouchard - tél:+1.514.383.3801, Montréal QC Canada
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>


-- 
Alexandre Quessy
http://alexandre.quessy.net
http://www.puredata.info/Members/aalex