🚀 go-pugleaf

I am trying to get gnuplot running on the ST using Megamax. I started out
trying to hack the first version of gnuplot, and make use of the plotxy
package (commenting out unavailable calls such as system): I will later
try a proper job on the later version of gnuplot (much better because of
using malloc rather than fixed storage.
However, having eventually hacked around until the code compiles I am
seeing two problems:
1. No fabs, floor, ceil, pow, sinh, cosh, atan2 (maybe they are in the
   extra Megamax libraries, which I did not buy. Does anyone know, or
   have a suitable PD library?
2. The famous floating point comparison bug: I have had Megamax for some time
   so I suspect I have it. Is it only in the double.l? Is the posted
   fix verified? What is the latest version of Megamax (incidentally,
   as always when one buys a product like Megamax one invariably posts
   off the card which says one has it and which promises support,
   information about new versions etc. etc., after which one almost never
   hears anything.)

Actually, I have a third problem: having hacked a maths library the thing
prompts OK, recognises input like "plot [0:10] sin(x)" but does not plot.
That's my problem!

Incidentally, I have modified tvx to be able to get the ST function keys,
including cursor, insert/clr/home/help/undo, and I expect also to add
a mod to remap the function keyboard. If anyone is interested, tell me
or Bruce Wampler.