atanh

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

atanh — Inverse hyperbolic tangent

Description

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