atanh

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

atanh —Inverse hyperbolic tangent

Description

Returns the inverse hyperbolic tangent ofnum, i.e. the value whose hyperbolic tangent isnum.

Parameters

num

The argument to process

Return Values

Inverse hyperbolic tangent ofnum

See Also

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