atanh

Inverse hyperbolic tangent

&reftitle.description; `float` `atanh` `float` `arg`

Returns the inverse hyperbolic tangent of `arg`, i.e. the value whose hyperbolic tangent is `arg`.

&reftitle.parameters;

`arg`

- The argument to process

&reftitle.returnvalues;

Inverse hyperbolic tangent of `arg`

&reftitle.changelog;

&Version; | &Description;
5.3.0 | This function is now available on all platforms

&reftitle.seealso;

- `tanh`
- `atan`
- `asinh`
- `acosh`