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System floating point routines on the 64 [message #85995] Mon, 17 June 2013 17:35
scottm is currently offline  scottm
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Message-ID: <361@cavell.UUCP>
Date: Sat, 12-Jan-85 15:59:41 EST
Article-I.D.: cavell.361
Posted: Sat Jan 12 15:59:41 1985
Date-Received: Sun, 13-Jan-85 09:23:15 EST
Distribution: net
Organization: U. of Alberta, Edmonton, AB
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... but can the C128 hold up to Ataris hot new stuff and Sony's 3.5's ?
 
In response to some poor soul awhile back.
The best (to my knowledge) reference for using the floating point
routines in the 64 is in the book "Mastering the Commodore64"
(or was it just "Mastering the 64"?).

They describe FAC#1 and FAC#2, (floating pt. accumulators)
and a few pages of where to jump to ROMs to evaluate several
mathematical functions, division by 10, rounding, sin, cos, etc.
Included with each routine is the necessary info on what the
FAC's should contain prior to and what they will hold after the calls.
I think this is sufficient for most non-trivial number crunching
needs for machine language programmers. 
 
..alberta!cavell!scottm   (In real life: Scott McPhee at U of eh?)
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