[cfp-interest 3919] Nxxxx_ Range bounds for math functions.pdf

[Paul Zimmermann]

       Hi,

a feedback from Andreas Enge: the note for cacos says
"can return a value outside the specified branch".

Should it be instead "outside the specified interval"
(here [0,pi]), because the branch boundary points are
here -1 and +1, and are exactly representable?

>From myself: For cacosh, there is a repetition
"in the interval interval" (same for casinh and catanh).

Paul