🚀 go-pugleaf

I am currently trying to teach myself assembly language on the amiga and
as a project, I thought I'd write a mandlebrot program in assembly that I
originally wrote in C. I can open libraries, screens, windows etc. well
and can generate a nice looking mandlebrot but what I'm after is SPEED!

Firstly, my system is an A3000 68030/68882 25Mhz. I have a shareware copy
of MandFXP by Cybersoft I believe, and that sucker can really splat
mandelbrots in under 2 seconds! Mine is not nearly as fast. My technique is
straightforward. For actual drawing, I open a custom screen & window and
use a pointer to the rastport for drawing in. I use the _WritePixel &
_SetAPen library calls to do the actual drawing. For testing a point to see
if it is in the mandelbrot set, I use the 68882 fmove,fmul,fdiv calls to 
calculate in single floating point accuracy, the coordinate on the complex
plane and use z->z^2+c calculations accordingly. The mandelbrot is drawn
fairly quickly but not nearly as fast as MandFXP and I want to squeeze 
maximum speed out of this sucker. Does anyone know of a way of storing
floating points as ints and doing some sort of bit shifting stuff to do 
fp arithmatic operations? Any help in optimizing this thing would be
of great help. Thanks.
                  Greg


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anonymous: Who am I?      |  O.S.U.  CIS
                          |  Columbus Ohio
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