Re: On writing negative zero - with or without sign

I am unfamiliar with the concept of interval arithmetic.

In all seriousness: If you are using floating-point arithmetic at all, not knowing interval arithmetic is a serious gap in education. The English Wikipedia only has a short section in a larger article on intervals, but points you to the corresponding German article that even has a nice worked example. As a motivation, it uses measurement error of physical properties, but of course the intrinsic properties of floating-point numbers apply in just the same way.

Jan
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