Update wrapAngle.mo

[lvanfretti]

Bracket typos in function description and documentation.

[CLAassistant]

All committers have signed the CLA.

[dietmarw]

I think this PR is invalid since the documentation is correct it with respect that the range does not include the lower -pi or the upper 2*pi. Hence ]-pi,pi] and [0,2*pi[are correct.

[dietmarw]

One could argue though that the non-standard ]-pi,pi] and [0,2*pi[ should be changed to standard notation (-pi,pi] and [0,2*pi) but I'm not sure that this is really that important also since it means changing it in several other places in the MSL.

[HansOlsson]

One could argue though that the non-standard ]-pi,pi] and [0,2*pi[ should be changed to standard notation (-pi,pi] and [0,2*pi) but I'm not sure that this is really that important also since it means changing it in several other places in the MSL.

Both variants are supposed to be standard notation.
https://en.wikipedia.org/wiki/Interval_(mathematics)#Including_or_excluding_endpoints
https://en.wikipedia.org/wiki/ISO_31-11

[dietmarw]

Ah ok, in that case Wolfram ought to update its pages ;-) https://mathworld.wolfram.com/OpenInterval.html

Anyway, I would close this PR as invalid but leave the decision to the library officers @AHaumer and @MartinOtter

[lvanfretti]

Both variants are supposed to be standard notation. https://en.wikipedia.org/wiki/Interval_(mathematics)#Including_or_excluding_endpoints https://en.wikipedia.org/wiki/ISO_31-11

As a plain vanilla user, the notation (-pi,pi] and [0,2*pi) is easier to understand. Most people are familiar with that one... that is what it confused me in the first place.

[lvanfretti]

Yes, I understand. As I said, it is just a less common notation used in the documentation that what one would expect a normal user to know. Perhaps, adding a clarification could be better than modifying the existing text?

[AHaumer]

[-pi,pi] is wrong.
I'm comfortable both with ]-pi,pi] and (-pi,pi].
So use on of the two formulations.

[christiankral]

OK, depending on this discussion I propose:

1. to keep the original implementation
2. add a link to https://en.wikipedia.org/wiki/Interval_(mathematics)#Including_or_excluding_endpoints so that pepole not familiar with the used nomenclature can look it up

I am adding the link to the block and the function.