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atanh

(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)

atanh — Inverse hyperbolic tangent

Description

atanh(float $num): float

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

Parameters

num: The argument to process

Return Values

Inverse hyperbolic tangent of num

See Also

tanh() - Hyperbolic tangent
atan() - Arc tangent
asinh() - Inverse hyperbolic sine
acosh() - Inverse hyperbolic cosine

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