[Gridflow-dev] expr problem with '**'

Ricardo Fabbri rfabbri at gmail.com
Tue Nov 8 18:01:58 EST 2011

Nice about #expr being optimized. Thank you. About "**", I had just
wondered if it was due to a deeper problem with my gridflow installation.

Ricardo Fabbri
Linux registered user #175401

On Tue, Nov 8, 2011 at 8:06 PM, Mathieu Bouchard <matju at artengine.ca> wrote:
> Le 2011-11-02 à 16:36:00, Ricardo Fabbri a écrit :
>> I'd like to report that #expr is mostly for me,
> mostly _working_ for you ?
>> but it doesn't recognize the '**' operator. From the #-test.pd :
>> [#expr fact($f1)**2]: unknown operator '**'
> Not all things written in tests/*.pd work. The big pile of stuff in
> #expr-test.pd should all work when you click the bang, but the rest of the
> tests aren't categorised, labelled or documented. Ideally, every automatable
> test would look like it is in #expr-test.pd. In the meanwhile, you have to
> ignore that [#expr] which is not even in the right test-file and is about a
> feature that is not implemented.
> $f1**$f2 is to be written pow($f1,$f2) instead. The former is the syntax
> used in Ruby/Python/Pascal/Gnuplot/etc. The latter is the syntax used in
> [expr] and in C. I might add support for **, but it's not necessary right
> now, and it's trickier because it's an exception because of different
> parsing. It's a right-to-left association thing : a**b**c must parse as
> a**(b**c) and I didn't want to have to think about it at this point.
> BTW, I just made [#expr] about 12 times faster on Sunday night. Now it's
> almost as fast as [expr].
>  ______________________________________________________________________
> | Mathieu BOUCHARD ----- téléphone : +1.514.383.3801 ----- Montréal, QC

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