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atanh

(PHP 4 >= 4.1.0, PHP 5, PHP 7)
Inverse hyperbolic tangent
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

Returns:

Inverse hyperbolic tangent of arg

Changelog:
5.3.0

This function is now available on all platforms

See also:

tanh() -

atan() -

asinh() -

acosh() -

doc_php
doc_php
2016-02-24 16:02:26
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