Re: 2.0 fails miserably in the PARANOIA program ( was: Division by 0 crashes OS2/2.0 )

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#1015

From: Samuel A. Figueroa
Date: Sat, 12 Sep 1992 18:17

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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)
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Do NOT copy me into your .signature file!

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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 )
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Date: 12 Sep 92 18:17:33 GMT
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