Re: ANN: Units of measurement for Ada v3.12 (New SI prefixes)

["Jeffrey R.Carter" <spam.jrcarter.not@spam.acm.org.not>]

On 2022-11-30 16:44, AdaMagica wrote:
> This is a bit confusting. From
> https://www.lne.fr/en/news/general-conference-weights-and-measures-2022:
> 
> to express quantities of digital information using orders of magnitude in excess of 1024, has been adopted.
> 
> Thus, four new prefixes have been introduced:
> 
>      ronna pour 1027
>      ronto pour 10-27
>      quetta pour 1030
>      quecto pour 10-30
> End quote.
> 
> What does the reference to 1024 mean? Does it mean power of ten prefixes (negative  powers)? The what relevance has 1024? If it's binary units, negative powers are nonsense.

I suspect the numbers of the form 10xx originally had xx as a superscript which 
was lost in translation, or 10 ** xx in Ada. Similarly, 10-xx would be 10 ** (-xx).

-- 
Jeff Carter
"Now go away or I shall taunt you a second time."
Monty Python & the Holy Grail
07