On Thu, 21 Apr 2011, Nicolas Cellier wrote:

> 2011/4/21 Bert Freudenberg <bert at freudenbergs.de>:
>>
>> On 21.04.2011, at 23:01, Levente Uzonyi wrote:
>>
>>> On Thu, 21 Apr 2011, Frank Shearar wrote:
>>>
>>>> On 2011/04/21 21:18, Bert Freudenberg wrote:
>>>>> 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.
>>>>
>>>> Heh, I think appending an "h" looks exactly right :)
>>>>
>>>> http://mathworld.wolfram.com/InverseHyperbolicCosine.html for instance uses "arccosh".
>>>
>>> +1 :)
>>>
>>> Actually searching my image with the message names browser for 'arcSinH', I found the following:
>>> arcSinH
>>> testArcSinH
>>> testArcSinHStd
>>
>> "H" is much better than "h".
>>
>> - Bert -
>>
>
> Then we should use areaSinH not arcSinH...
> Note that there is a sinh/cosh in Complex, and that pair should then
> be renamed sinH cosH.
> But it sounds like we want to be unique in computer science.

>From wikipedia: "The abbreviations arcsinh, arccosh, etc., are commonly 
used, even though they are misnomers, since the prefix arc is the 
abbreviation for arcus, while the prefix ar stands for area.". My point 
is on "commonly used". But if you care about the meaning, then arSinH 
or areaSinH is definitely better.


Levente

>
> Nicolas
>
>