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- From: figueroa@SPUNKY.CS.NYU.EDU (Samuel A. Figueroa)
- Newsgroups: comp.os.os2.programmer
- Subject: Re: 2.0 fails miserably in the PARANOIA program ( was: Division by 0 crashes OS2/2.0 )
- Message-ID: <9209121817.AA13759@SPUNKY.CS.NYU.EDU>
- Date: 12 Sep 92 18:17:33 GMT
- Sender: daemon@cmcl2.nyu.edu (Mr Background)
- Organization: New York University
- Lines: 14
-
- According to a paper I have by W. Kahan (the main person behind both IEEE
- Standards for Floating-Point Arithmetic, as well as PARANOIA; this paper
- complains about the quality of Cray's floating-point arithmetic), the IIT
- math coprocessor doesn't round extended (80-bit) precision correctly,
- though due to a "fluke" in their design, this problem doesn't show up in
- double (64-bit) precision. Does PARANOIA complain about this? (I would
- not be surprised if it didn't, since few compilers provide direct access
- to extended precision, so PARANOIA might not be able to test this. How-
- ever, I haven't looked at PARANOIA's source code, so I don't know if it
- somehow knows how to figure this out.)
- ------------
- Sam Figueroa (figueroa@cs.nyu.edu)
- This is not a .signature virus.
- Do NOT copy me into your .signature file!
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