[alt.folklore.computers] Floating-point formats

andyo@glasperl.masscomp (Andy Oram) (11/28/90)

I would like to find out what binary floating-point formats are currently in
use, besides the familiar IEEE 754 and DEC PDP/VAX.  If you know of such
existing systems, please tell me:

    1. The bit formats themselves.

    2. The machines built with them.  (Just hosts.  I realize that
       any attached processors by the same manufacturer or by VAR's will use
       the same formats.)

    3. A brief assessment of why the formats were chosen, and whether they
       offer any advantages over IEEE 754.  (Simplicity, range, and speed are
       all valid advantages).

    4. Whether you expect the formats to be used in future architectures.

Please e-mail responses.  Nobody but me could be cookoo enough to be
interested in this issue.

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Andrew Oram                            Concurrent Computer Corporation

Analog Communications Routes:          One Technology Way
                                       Westford, Mass.  01886
                                       (508) 392-2865
Digital Communications Routes:         andyo@westford.ccur.com
                                       {harvard,uunet,petsd}!masscomp!andyo

(I don't represent Concurrent; this message represents my own opinion)

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andyo@glasperl.masscomp (Andy Oram) (11/28/90)

My mailer is garbling my From: line, as a kind respondent just pointed out to
me.  Please send your responses to andyo@westford.ccur.com as shown in my
signature.

-------------------------------------------------------------------------------

Andrew Oram                            Concurrent Computer Corporation

Analog Communications Routes:          One Technology Way
                                       Westford, Mass.  01886
                                       (508) 392-2865
Digital Communications Routes:         andyo@westford.ccur.com
                                       {harvard,uunet,petsd}!masscomp!andyo

(I don't represent Concurrent; this message represents my own opinion)

Automatic UN*X documentation utility:

          cref | compress | crypt | man

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