Re: Negative zero doesn't exist

On 5/30/25 5:09 AM, Richard Heathfield wrote:

On 30/05/2025 09:16, Mikko wrote:
 <snip>
 

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.

 Practical porpoises will avoid -0.1°C because it makes swimming too difficult.
 

But porpoises swim in salt water, which will still be liquid at that temperature, but colder than they like.
Minus 0 in IEEE is mostly an artifact of the representation, being a sign + magnatude representation.