RE: [cc65] Floating point support

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From: Keates, Mark (Mark.Keates_at_dendrite.com)
Date: 2002-05-22 10:55:52 

Hi,

There was an alternative set of FP routines for the Atari
(can't remember what they came with, either a patched
OS to swap on an XL/XE or with Omnimon or something?)
These were a lot faster but I don't know if they were
ieee or what the copyright status on the code would be.

Mark

> -----Original Message-----
> From: Piotr Fusik [mailto:P.Fusik_at_elka.pw.edu.pl]
> Sent: 22 May 2002 09:36
> To: cc65_at_musoftware.de
> Subject: Re: [cc65] Floating point support
> 
> 
> Hi!
> 
> On 22 May 2002, Christian Groessler wrote:
> 
> > I think (esp. from space reasons), even if there is a reference IEEE
> > implementation available, there should be an option to use the ROM
> > based float routines. Another reason to have this, is that then the
> > results of calculations are the same as when done in BASIC on the
> > machine.
> >
> IMHO not worth trouble. Different machines have different float
> representations (e.g. Atari is 6-byte BCD), different 
> functions (e.g. in
> Atari sin/cos are in Atari BASIC, not the OS; so you have to check if
> there's BASIC, which version is it etc.). Or do you suggest 
> taking Atari /
> C64 / ... FP routines and putting them in CC65 lib? This violates the
> copyright, I think.
> 
> Piotr
> 
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