dos_atanh - dalefugier/DOSLib GitHub Wiki

Calculate the inverse hyperbolic tangent.

Syntax

(dos_atanh number)

Parameters

number

The number, which must be between -1.0 and 1.0 (excluding -1.0 and 1.0).

Returns

The inverse hyperbolic tangent of the number, if successful.

nil on error.

Example

Command: (dos_atanh 0.76159416)
1.0
Command: (dos_atanh -0.1)
-0.100335