atanh

(PHP 4 >= 4.0.7, PHP 5)

atanhInverse 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


    

 

 

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