Re: Negative zero doesn't exist

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Sujet : Re: Negative zero doesn't exist
De : mikko.levanto (at) *nospam* iki.fi (Mikko)
Groupes : comp.theory
Date : 30. May 2025, 09:16:52
Autres entêtes
Organisation : -
Message-ID : <101bphk$d17c$1@dont-email.me>
References : 1
User-Agent : Unison/2.2
On 2025-05-29 22:02:42 +0000, Mr Flibble said:

Negative zero doesn't exist (in mathematics) so it was a mistake to give
it a representation in IEEE 754: zero should have a single representation.
That is true in the sense that there is only one zero in a number system
and that zero is nither negative nor positive.
However, when working with approximate values it may be useful to know
whether the true value is positive or negative even when for other values
a little more or less is insignifcant. One such case is temperature where
the difference between -0.1 °C can be significantly different from +0.1 °C
for practical purpoises even when the difference between, say, 5 °C and
6 °C isn't.
--
Mikko

Date Sujet#  Auteur
30 May 25 * Re: Negative zero doesn't exist5Mikko
30 May 25 `* Re: Negative zero doesn't exist4Richard Heathfield
30 May 25  `* Re: Negative zero doesn't exist3Richard Damon
31 May 25   `* Re: Negative zero doesn't exist2Fred. Zwarts
1 Jun 25    `- Re: Negative zero doesn't exist1Mikko

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