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RE: Motion 46: finalise interval literals, amendments



This is true for measurement results, but what if you have 1.234 as a coefficient in a formula, then John's suggestion makes sense

-----Original Message-----
From: stds-1788@xxxxxxxx [mailto:stds-1788@xxxxxxxx] On Behalf Of Ned Nedialkov
Sent: Wednesday, July 03, 2013 10:45 AM
To: Jürgen Wolff von Gudenberg
Cc: John Pryce; stds-1788; Ralph Baker Kearfott
Subject: Re: Motion 46: finalise interval literals, amendments

On 2013-07-02, at 11:12 PM, Jürgen Wolff von Gudenberg <wolff@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

> John,
>  just another option would be to use different constructors
> 		nums2interval(x)   --> [x,x]
> 		nums2intervalwide(x)   --> [x-ulp,x+ulp]

Really, why do we need to add an ulp around an interval? If my device tells me I measured 1.234 and the device has accuracy 5%, I will construct my interval. 

Regards,
Ned