XLeratorDB/math Documentation
ATANH
Updated: 17 August 2010
Use ATANH to calculate the inverse hyperbolic tangent of a number. The number must be between -1 and 1 (excluding -1 and 1).
Syntax
SELECT [westclintech].[wct].[ATANH] (
<@Number, float,>)
Arguments
@Number
is any real number greater than -1 and less than 1. @Number is an expression of type float or of a type that can be implicitly converted to float.
Return Types
float
Remarks
· ATANH = Log((1 + @Number) / (1 - @Number)) / 2
Example
SELECT wct.ATANH(cos(45))
Here is the result set
----------------------
0.583662051991022
(1 row(s) affected)