obsolete code?

Hi all,

I am in the process of reviewing all of the interpreter
code. This is a good opportunity to ask what modules have
become obsolete. What about the following:

* dz.c
* classify.c

dz implements a small virtual machine for interpreting
mathematical functions. I am not sure why we would want
to keep this--does it use fixed-point arithmetic?

classify implements a number of basic statistical
functions for lists of numbers. In my opinion, they
should be retired and analogous functions that work on
vectors or arrays should be used instead.

Any comments? Any other candidates for retirement?

Ralf


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