Re: backward ray tracing

Dave Bell <dbell@xxxxxxxxxxxxxxxxxxxx> wrote in news:ABtvj.6994$xq2.465
@newssvr21.news.prodigy.net:

Skywise wrote:
Helpful person <rrllff@xxxxxxxxx> wrote in news:3cc0512f-a127-4ca8-8cf3-
ea94cff7ef4b@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:

There was definately an accuracy problem in the old days of double
precision ForTran programs. However, although this should not still
be the case I have found it to be so.

Haven't they heard of arbitray precision? A fractal program I had
from the old days of DOS could do arbitrary precision to mind-numbingly
large values that were only limited by your CPU power and patience.
Back in the days of 386's, you had to be REALLY patient.

Brian

You don't know patience until you tried doing math on an 8080 at 2 MHz!

Dave
.... kids these days. Humph!

My first CPU was 8 bit at .89 Mhz. :) Ahhhh...the good ol' days.

(I'm sure there's folks who predate us both)

Brian
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