atanatanh
(PHP 4 >= 4.0.7, PHP 5)
atanh — Inverse hyperbolic tangent
Popis
float atanh
( float $arg
)
Returns the inverse hyperbolic tangent of arg , i.e. the value whose hyperbolic tangent is arg .
Note: Táto funkcia nie je implementovaná na platformách Windows.
Parametre
- arg
-
The argument to process
Vrátené hodnoty
Inverse hyperbolic tangent of arg
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