acosacosh
(PHP 4 >= 4.0.7, PHP 5)
acosh — Inverse hyperbolic cosine
Описание
float acosh
( float $arg
)
Returns the inverse hyperbolic cosine of arg , i.e. the value whose hyperbolic cosine is arg .
Список параметров
- arg
-
The value to process
Возвращаемые значения
The inverse hyperbolic cosine of arg
Список изменений
| Версия | Описание |
|---|---|
| 5.3.0 | This function is now available on all platforms |
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