Skip to content

    ArTanH

    Return inverse hyperbolic tangent.

    Declaration

    Source position: math.pp line 615

    function ArTanH(x: Float) : Float;

    Description

    artanh returns the inverse hyperbolic tangent of its argument x, where x should lie in the interval [-1,1], borders included. The arctanh variant of this function is supplied for Delphi compatibility.

    Errors

    In case x is not in the interval [-1,1], an EInvalidArgument exception is raised.

    See also

    Name Description
    arcosh Return inverse hyperbolic cosine.
    arccos Return inverse cosine.
    arcsin Return inverse sine.
    artanh Return inverse hyperbolic tangent.

    Example

    Program Example5;

{ Program to demonstrate the artanh function. }

Uses math;

begin
  Writeln(artanh(0));
  Writeln(artanh(0.5));
end.