From: "Campbell, Rolf [SKY:1U32:EXCH]" <moscoop AT americasm01 DOT nt DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Allegro and interrupts
Date: Mon, 03 Apr 2000 14:07:28 -0400
Organization: Nortel Networks
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To: djgpp AT delorie DOT com
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Kalum Somaratna aka Grendel wrote:

> I must confess that my panic at using FPU insns in game programming comes
> from the fact that I learnt game programming in the time when using the
> FPU was slooow, and everyone wrote code using sin and cos lookup tables
> etc.
>
> FWIW Even the allegro game programming library comes with a integer based
> floating point emulation rountines.
>
> I certainly agree that speed of FPU rountines vs integer rountines are
> norrowing. I once read that on a certain processor the fmul was faster
> than the imul...

You should see the timings on the Athlon's.  FPU stuff is amazingly fast, but
even an imul is 1-2 clocks...

--
(\/) Rolf Campbell (\/)