Asinh/Acosh/Atanh have no methods for machine floats

[mohamed-barakat]

Observed behaviour

gap> Asinh( 0. );
Error, no method found! For debugging hints type ?Recovery from NoMethodFound
Error, no 1st choice method found for `Asinh' on 1 arguments at /Users/mo/software/gap/build/gap-4.11.0/lib/methsel2.g:249 called from
<function "HANDLE_METHOD_NOT_FOUND">( <arguments> )
 called from read-eval loop at *stdin*:11
type 'quit;' to quit to outer loop
brk>

Expected behaviour

gap> Asinh( 0. );
0.

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[fingolfin]

None of these are implemented for GAP machine floats. If somebody wanted to, it would rather easy to add support for them. Or use a float type from the float package which implements these.

Note that Atanh is also missing. I'd not be surprised if there were more missing.

[fingolfin]

Turns out none of the hyperbolic functions are implemented. Nor the special functions Erf, Zeta and Gamma.

[mohamed-barakat]

I saw them together with Asin and Acos listed in the documentation so and the latter worked, so I thought that they are implemented too.