Re: [GD-Consoles] PS2 floating point

[Research \(GameBrains\) <res...@ga...>]

Gareth,
Found it! (moved to chapter 8 in 6th edition).  Thank you very much!
Brett

----- Original Message -----=20
From: "Gareth White" <gw...@ra...>
To: <res...@ga...>
Cc: <gam...@li...>
Sent: Thursday, February 27, 2003 2:49 PM
Subject: Re: [GD-Consoles] PS2 floating point


> There are indeed subtle differences between the PS2 and the IEEE =
implementation.
>=20
> Try the 'EE Core User's Manual' (2nd Edition), Page 77, Chapter 4
> 'Floating-Point Unit (FPU)', section 4.8 'IEEE 754 Compatability'
>=20
> Cheers.
>=20
> ---
> Gareth White - Engine Programmer - Ratbag Pty Ltd
> Level 8, 63 Pirie Street, Adelaide, SA, Australia, 5000
> Ph: +61 8 8223 5830, Fax: +61 8 8223 5746, Mob: 0403 942668
> http://www.ratbaggames.com/
>=20
> ----- Original Message -----
> From: "Research (GameBrains)" <res...@ga...>
> To: <Gam...@li...>
> Sent: Thursday, February 27, 2003 4:46 PM
> Subject: [GD-Consoles] PS2 floating point
>=20
>=20
> Hello,
> Our physics engine is experiencing some odd behavior on the PS2.  We =
traced it
> to our resting contact force calculation where sometimes it seems the =
result is
> not quite right, but it works fine on other platforms.  I don't know =
if it's an
> urban legend or what, but I have heard that the PS2 has some quirks =
with regard
> to floating point numbers and so I thought I would just ask and see if =
this is
> something I need to look at or not.  If so, what are the differences =
between the
> PS2 IEEE implementation and is there a doc describing them?
> Thanks,
> Brett
>=20
>=20
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>=20
>=20
>=20
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