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Re: I vote NO on Motion P1788/M0024.02:RoundedOperations

OK, I guess we are at least clarifying what we are
voting on, if not reaching a consensus.

Baker

On 05/15/2011 11:54 AM, Dan Zuras Intervals wrote:

From: "Nate Hayes"<nh@xxxxxxxxxxxxxxxxx>
To: "Dan Zuras Intervals"<intervals08@xxxxxxxxxxxxxx>,
	"Ulrich Kulisch"<Ulrich.Kulisch@xxxxxxxxxxx>
Cc:<stds-1788@xxxxxxxxxxxxxxxxx>,
	"Dan Zuras Intervals"<intervals08@xxxxxxxxxxxxxx>
Subject: Re: I vote NO on Motion P1788/M0024.02:RoundedOperations
Date: Sun, 15 May 2011 11:05:51 -0500

Dan Zuras wrote:

Ulrich,

I quote from your motion:

Instead, a future interval arithmetic standard should
require that EVERY FUTURE PROCESSOR shall provide the
16 operations listed above as distinct instructions.

(emphasis yours in bold).


Dan,

You are quoting version 1 of the motion from 4/15/2011.

We are voting on the friendly amedment made by Prof. Kulisch on 4/29/2011
which changed that passage to:

"The operations with the directed roundings should be implemented directly
in hardware for efficiency reasons."

There were also a few other changes based on comments made earlier by Prof.
Fahmy and others.

I hope people are basing their votes on the right motion!

Nate


	Hmm.  Interesting.  We have 3 files here.

	The file Prof Kulisch posted on 4/15 is called RoundOper.pdf

	I am quoting from the file that is on the motions website as
	documentation for motion 24 which is motion24roundOper.pdf.

	It is the file I consulted when I made up my mind&  it contains
	the passage you see above.

	But you are correct, the file Ulrich posted on 4/29 under the
	name RoundOper1.pdf contains the modified passage:

		The operations with the directed roundings SHOULD be
		implemented directly in hardware for efficiency reasons.

	However, the paragraph that now preceeds that passage states:

		Every IEEE 1788 compliant system SHALL provide the 8
		operations with the directed roundings by distinct
		operation codes. Each of the 8 operations SHALL be
		callable as a single instruction. The rounding SHALL
		be an integral part of the arithmetic operation.
		Employing an operation with a directed rounding must
		be as simple as employing the corresponding operation
		with rounding to nearest.

	(emphasis his in bold).

	Do you REALLY think that's an improvement?

	I think the intent is clear&  it does not change my mind.
	All my arguments apply to this motion as well as the other.

	I guess I vote NO whichever is the correct motion.


				Dan




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R. Baker Kearfott,    rbk@xxxxxxxxxxxxx   (337) 482-5346 (fax)
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Department of Mathematics, University of Louisiana at Lafayette
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