Autor: Chad Turek (turek_at_aa.washington.edu)
Data: Thu 24 Nov 1994 - 09:07:51 MET
Ponizej; jak Intel widzi sprawe floating point unit bug.
Chad.
PS. Jezeli ktos chcialby uniknac miedzynarodowej oplaty telefonicznej za
faxback od INTEL, prosze dac mi znac. INTEL ma bezplatny 1 800 numer
wazny na kontynencie amerykanskim. Faxback moge przeslac jako e-mail
attachment.
---------- Forwarded message ----------
Date: 23 Nov 1994 19:19:35 GMT
From: Lawrence Neinstein <neinstei_at_mizar.usc.edu>
Newgroups: comp.sys.intel, alt.sys.pc-clone.dell, alt.sys.pc-clone.micron,
alt.sys.pc-clone.gateway2000
Subject: intels fax back on bug
Here is the fax back from intel on fpu bug. I have not heard back from
intel personally. Just for your information:
This is faxback doc #7999 at 800 628-2283
"There has been a lot of communication recently on the Internet about a
floating point flaw on the Pentium processor. For almost all users, this is not a problem.
Here are the facts. Intel detected a subtle flaw in the precision of the divide
operation for the Pentium processor. For rare cases (one in nine billion
divides), the precision of the result is reduced. Intel discovered this suble flaw during ongoin testing
after several trillions of floating point operations in our continuing testing of the Pentium processor. INtel
immediately tested the most stringent technical applications that use
the floating point unit over the course of months and we have been unable to detect any error.
In fact, after extensive testing and shipping millions of Pentium processor-based systems
there has only been one reported instance of this flaw affecting a user
to our knowledge, In this case, a mathematician doing theoretical analysis of prime numbers and reciprocals
saw reduced precision at the 9th place to the right of the decimal.
In fact, extensive engineering tests demonstrated that an average spreadsheet user could
encounter this suble flaw of reduced precision once in every 27,000 years of use.
Based on these empirical observations and our extensive testing, the user of standard off-the-shelf
software willnot be impacted. If you have this kind of prime number generation or other complex
nathematics, call 1 800 628-8686 (International) 916 356-3551).
If you don't, you won't encounter any problems with your Pentium processor-based system. If ever
in the life of the computer this becomes a problem, Intel will owrk with the customer
to resolve the issue."
Next page's disclaimer:
"Intel Corporation disclaims all warranties and liabilities for the use
of this document and the information contained herein, and assumes no
responsibility for any errors which may appear in this document.
Intel makes no commitment to update the information contained herein, and my
make changes at any time without notice. There are no express or
implied licenses granted hereunder to any intellectural property
rights of Intel Corp. or others to design or fabricate Intel integrated circuits or integrated
circuits based on the information in this document."
To archiwum zostało wygenerowane przez hypermail 2.1.7 : Wed 19 May 2004 - 15:47:09 MET DST