From: "Bob Platko" <platko AT ix DOT netcom DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Fixed Point (Optimization)
Date: 4 Jan 1997 03:39:34 GMT
Organization: Netcom
Lines: 18
Message-ID: <01b9bb84$bc3275a0$e2c5b7c7@platko.ix.netcom.com>
References: <32cd6b2c DOT 4726585 AT nntp DOT southeast DOT net>
NNTP-Posting-Host: clv-oh14-02.ix.netcom.com
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Murray Stokely <murray AT southeast DOT net> wrote in article
<32cd6b2c DOT 4726585 AT nntp DOT southeast DOT net>...
>      Is Fixed-Point math still a neccesity for today's computers with
> all their built it FPU's, etc?  How much faster can it be?  Anyway,
> this is the same code procedure from our long thread on optimization;
> I've recently come back to it, because I still see room for
> improvement.  What can be done to it.  Fixed point?  Lookup tables?
> 
> void calculate_tfm(int diameter, char magnification)...

Fixed Point math is still very essential for dramatic speed increasement
even with today's FPU's.  I never bench marked Fixed Point compared to
floating point, so I don't know how much faster it will be; it depends on
how often you use it.  A lookup table will most likely increase your speed.

BP