atanh
(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)
atanh — Inverse hyperbolic tangent
Description
$num
): float
Returns the inverse hyperbolic tangent of
num
, i.e. the value whose
hyperbolic tangent is num
.
Parameters
-
num
-
The argument to process
Return Values
Inverse hyperbolic tangent of num