atanh
(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)
atanh — Inverse hyperbolic tangent
Description
atanh(float $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
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.atanh.php
