(PHP 4 >= 4.1.0, PHP 5)
acosh — Inverse hyperbolic cosine
Returns the inverse hyperbolic cosine of arg, i.e. the value whose hyperbolic cosine is arg.
The value to process
The inverse hyperbolic cosine of arg
| Версия | Описание |
|---|---|
| 5.3.0 | This function is now available on all platforms |