atanh()
atanh(\Complex\Complex|mixed $complex) : \Complex\Complex
Returns the inverse hyperbolic tangent of a complex number.
Parameters
| \Complex\Complex|mixed | $complex | Complex number or a numeric value. |
Throws
- \Complex\Exception
If argument isn't a valid real or complex number.
Returns
\Complex\Complex —The inverse hyperbolic tangent of the complex argument.