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