C11 conformance of casinl-like functions.

[mokhi]

> I would love to see these functions implemented.  I spent a lot of time
> on them, and they went through a lot of testing to make sure they were
> accurate, even in very extreme edge cases.
Thanks for your works.
I am doing based on them, and editing the things needed to be renewed __/|\__

> Here are more details about the implementation.
>
> http://faculty.missouri.edu/~stephen/software/#catrig
Thanks I'll take a look on them.

Thanks and best wishes, Mokhi.