atanh

(PHP 4 >= 4.0.7, PHP 5)

atanh — Inverse hyperbolic tangent

Description

float atanh ( float $arg )

Returns the inverse hyperbolic tangent of arg , i.e. the value whose hyperbolic tangent is arg .

Note: This function is not implemented on Windows platforms.

Parameters

arg: The argument to process

Return Values

Inverse hyperbolic tangent of arg

See Also

tanh()
atan ()
asinh()
acosh()