atanh

(PHP 4 >= 4.1.0, PHP 5, PHP 7)

atanh — Inverse hyperbolic tangent

Description

atanh ( float $arg ) : float

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

See Also

© 1997–2020 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.atanh.php