For the "centrng" typo, it seems like you chose the "centring" in your docs, while I wrote "centering", more in line with American English habits. Both are working English words. I could change it to "centring" if you prefer.

Please use centering as you've done in this PR. If you can find any similar typos that would be great. Also would be great if they were different commits. Thank you very much for catching these.

@atztogo @lan496 I leave it to you to comment on the validity of the contents.

I will look a bit into why the windows builders do not find asnan. I think it's a flag needed to specify using static sanitizers

Thanks @singularitti catching typos. I am not good at English, but I tend to use "centring" following the International Table for Crystallography. In literature, I find both, so no problem which is used. How do you think, @lan496?

Hi @atztogo, "centring" and "centering" are both valid English words; the former is British, and the latter is American. I can change it to "centring".

@singularitti, do you want to handle #359 in this PR? Seems pretty straightforward. Not sure whereto add the tests though, to rtd or to pytes

@LecrisUT, do you mean convert these codes I modified into doc tests? Sure! But it might not be instantaneously done since I've been pretty busy recently.

I tend to use "centring" following the International Table for Crystallography. In literature, I find both, so no problem which is used. How do you think, @lan496?

The IUCr dictionary shows both "centre" and "center". So, I also think both will be fine. Actually, I did not notice ITA tends to use the former. Considering to follow the ITA first, I guess "centring" is better.

I find the current spglib mixes the both:
https://github.com/search?q=repo%3Aspglib%2Fspglib+centering&type=code
https://github.com/search?q=repo%3Aspglib%2Fspglib%20centring&type=code

@LecrisUT, do you mean convert these codes I modified into doc tests? Sure! But it might not be instantaneously done since I've been pretty busy recently.

I can handle these tomorrow. I want to add spell and link checks while we're at it anyway. You're ok with me merging your commits and adding more on top of that.

I tend to use "centring" following the International Table for Crystallography. In literature, I find both, so no problem which is used. How do you think, @lan496?

The IUCr dictionary shows both "centre" and "center". So, I also think both will be fine. Actually, I did not notice ITA tends to use the former. Considering to follow the ITA first, I guess "centring" is better.

I find the current spglib mixes the both: https://github.com/search?q=repo%3Aspglib%2Fspglib+centering&type=code https://github.com/search?q=repo%3Aspglib%2Fspglib%20centring&type=code

For me I find the spelling centring a bit jarring, particularly since I am more used to the AE pronunciation. The other way around, I don't think it is as problematic

While we are at it, could you please also check this equation?

\boldsymbol{P} = \begin{pmatrix}
\frac{1}{2} & \frac{1}{2} & 0 \\
\frac{\bar{1}}{2} & \frac{1}{2} & 0 \\
0 & 0 & 1
\end{pmatrix}.

If I understand the symbols correctly, shouldn't the correct matrix be its transpose? Then you could have $\mathbf{b} = \frac{1}{2}\mathbf{a}_s +\frac{1}{2}\mathbf{b}_s`.

@singularitti, thanks. It is incorrect. It must be transposed as below,

\boldsymbol{P} = \begin{pmatrix}
\frac{1}{2} & \frac{\bar{1}}{2} & 0 \\
\frac{1}{2} & \frac{1}{2} & 0 \\
0 & 0 & 1
\end{pmatrix}.

Agreed. I can update it by the way.

Thanks @singularitti!

My pleasure to help!