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- From: eijkhout@cupid.cs.utk.edu (Victor Eijkhout)
- Newsgroups: sci.math.num-analysis
- Subject: Re: LAPACK machine constants
- Date: 27 Jan 93 14:57:29
- Organization: /pearl/homes/eijkhout/.organization
- Lines: 21
- Distribution: inet
- Message-ID: <EIJKHOUT.93Jan27145729@cupid.cs.utk.edu>
- References: <9302717.22929@mulga.cs.mu.OZ.AU>
- NNTP-Posting-Host: cupid.cs.utk.edu
- In-reply-to: kbriggs@mundoe.maths.mu.OZ.AU's message of Wed, 27 Jan 1993 06:31:02 GMT
-
- In article <9302717.22929@mulga.cs.mu.OZ.AU> kbriggs@mundoe.maths.mu.OZ.AU (Keith Briggs rba8 7088) writes:
-
- The weird (and unusable) results are caused by the IBM representation of
- quadruple as two doubles. In other words, DLAMCH has not been written
- in a sufficiently portable way.
-
- DOES ANYBODY KNOW THE CORRECT VALUES?
-
- I'm sure that that information is IBM proprietary :-)
-
- (The source of dlamch refers to a few papers with algorithms.
- You might try to find out what assumptions about the architecture
- they use that are not applicable to the RS/6000)
-
-
-
- --
- Victor Eijkhout ................................ `There are also a few bugs,
- Department of Computer Science .......... though not as many as I've come to
- University of Tennessee ............... expect in new [MS]Windows products.'
- Knoxville TN 37919 ................................ (from a software review)
-