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Re: [avr-gcc-list] big .hex file - explanation please?

From: Anton Erasmus
Subject: Re: [avr-gcc-list] big .hex file - explanation please?
Date: Sun, 15 Aug 2004 22:33:56 +0200

On 12 Aug 2004 at 14:32, Kelly McDonald wrote:

> Jeff & Eric,
> Thanks for the help.
> having the listing there is defnintly a big help. I think that I've been
> working with scripting languages too long!
> Q: if you are working with 'big numbers' are there any tricks that you
> usally employ? I'm trying to generate an output code for a DDS and it
> requires 32bits for an arbitrary frequency. I may try playing with it
> and try to do away with the floats. (then again I've still got almost 6k
> left to play with)

Well you can easily use 64bit numbers with gcc. This is normally enough range
to end up with a sensible 32bit result after some multiplies and divides. This 
still much faster than the floating point routines.

   Anton Erasmus
A J Erasmus

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