atanh (Matlab function) Inverse hyperbolic tangent

## Matlab/Scilab equivalent

Matlab | Scilab
    atanh
    atanh

## Particular cases

In y=atanh(x), for real elements of x < -1, the complex part of Scilab y value is the opposite of Matlab y value.

Examples

Matlab | Scilab
--- | ---
    y = atanh(-2)
    y = -0.5493 - 1.5708i
    y = atanh(-2)
    y = -0.5493061 + 1.5707963i