Hm. I just wondered about that.
/ Mirar
Previous text:
2003-07-17 19:10: Subject: cosh, atanh, sinh
You should remove the "Impossible tangent" check in tanh as well, tanh is defined for the entire real axis (and quite possibly the complex plane as well :).
/ Marcus Comstedt (ACROSS) (Hail Ilpalazzo!)