[PD] list-setclass

[Matt Barber]

Hello,

Attached is a list abstraction that outputs the set-class (in the
music theory sense) of the incoming list taken as a set of pitches.
Another name for the abstraction might be [list-primeform].  The
modulus is variable and can be set by a creation argument -- it
defaults to 12.

It requires some form of [list-sort], which I've included from the
list-abs directory.

See, for instance:

http://lulu.esm.rochester.edu/rdm/pdflib/set-class.table.pdf


I assume there's already something like this in Pd-land, but I thought
it would be fun to build one.

Matt
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