atanh
atanh
(PHP 4 >= 4.1.0, PHP 5, PHP 7)
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 |
See Also
© 1997–2017 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.atanh.php