On 21.04.2011, at 21:24, Nicolas Cellier wrote:

> Just a question of language: how to name them in English ?
> Using asinh acosh atanh like any other programming language do would
> be that simple...
> But Smalltalk did not follow that path and didn't implement asin acos atan...
> 
> In French, inverse hyperbolic functions are named like this
> argument sinus hyperbolique (argsh ou argsinh)
> http://fr.wikipedia.org/wiki/Fonction_hyperbolique#Argument_tangente_hyperbolique
> 
> So I decided to use argSinh argCosh argTanh quite naturally (like we
> have arcSin arcCos arcTan).
> 
> However I'm not sure English has same conventions. Can someone enlighten me?
> 
> Nicolas

How about hypSin, hypArcSin, etc.? Alternatively, sinHyp, arcSinHyp. 

This would fit the existing theme better, since we use arcSin where others use asin, etc. Just appending an "h" looks odd.

- Bert -