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Re: [Stds-754] Motion: Delete 5.3.2 Scaled-product operation
Item 18 has been revised by author. - Dan
Date: Tue, 27 Jun 2006 06:29:28 -0700 (PDT)
From: David Hough 754R work <754r@xxxxxxxxxxx>
Subject: Re: [Stds-754] Motion: Delete 5.3.2 Scaled-product operation
July agenda item #18 is revised as follows:
<b>Agenda item #18</b>
Date: Mon Jun 26 10:17:21 PDT 2006
From: David Hough
Motion: Delete 5.3.2 Scaled-product operation; add A.3. Scaled-product
operations
Rationale:
The current specification is too limited to be worth standardizing.
Actual applications are just as likely to need over/underflow
protection for products of sums and differences. And the array
versions would not likely be implemented upon a primitive with the prescribed
semantics (a more probable implementation primitive would return zero sf if
no over/underflow intervenes). Since the whole point is performance,
the user feature (acting on arrays) would be implemented upon a performant
primitive.
So restore the actual user feature to annex A, which is where it came from
originally, as a means of avoiding specifying counting mode.
Text:
Delete 5.3.2 Scaled-product operation from the 754R draft.
Add A.3. Scaled-product operations by copying 5.3.2 Scaled-product operations
from http://754r-c.ucbtest.org/motions/archive/chapter5.pdf