Re: PS2 floating point
"J. Grant" <[email protected]> Thu, 27 Feb 2003 14:33:18 +0000
| Newsgroups | gmane.games.devel.consoles |
|---|---|
| Message-ID | <[email protected]> |
Hi Brett, Out of interest what was the problem with your implementation? I found that -fshort-double stopped some of the problems I was having with one issue when I tested some float stuff a while ago. However, if the code is the problem then this would not solve that. JG Research (GameBrains) wrote: > Gareth, > Found it! (moved to chapter 8 in 6th edition). Thank you very much! > Brett > > ----- Original Message ----- > From: "Gareth White" <[email protected]> > To: <[email protected]> > Cc: <[email protected]> > 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. >> >> Try the 'EE Core User's Manual' (2nd Edition), Page 77, Chapter 4 >> 'Floating-Point Unit (FPU)', section 4.8 'IEEE 754 Compatability' >> >> Cheers. >> >> --- >> 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/ >> >> ----- Original Message ----- >> From: "Research (GameBrains)" <[email protected]> >> To: <[email protected]> >> Sent: Thursday, February 27, 2003 4:46 PM >> Subject: [GD-Consoles] PS2 floating point >> >> >> 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 ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Gamedevlists-consoles mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/gamedevlists-consoles Archives: http://sourceforge.net/mailarchive/forum.php?forum_id=553