atanh
(PHP 4 >= 4.0.7, PHP 5)
atanh — Inverse hyperbolic tangent
Description
float atanh
( float $arg
)
Returns the inverse hyperbolic tangent of arg , i.e. the value whose hyperbolic tangent is arg .
Parameters
- arg
-
The argument to process
Return Values
Inverse hyperbolic tangent of arg
ChangeLog
| Version | Description |
|---|---|
| 5.3.0 | This function is now available on all platforms |