ATANH

Description

Returns the hyperbolic arc tangent of x, or NULL if x is not in the range -1 to 1(excluding -1 and 1).

Syntax

ATANH(<x>)

Parameters

Parameter	Description
<x>	The value for which the hyperbolic arc tangent value is to be calculated

Return Value

The atanh value of parameter x.

Example

select atanh(1.0);

+------------+
| atanh(1.0) |
+------------+
|       NULL |
+------------+

select atanh(1.0);

+-------------+
| atanh(-1.0) |
+-------------+
|        NULL |
+-------------+

select atanh(1.0);

+------------+
| atanh(0.0) |
+------------+
|          0 |
+------------+

select atanh(1.0);

+--------------------+
| atanh(0.5)         |
+--------------------+
| 0.5493061443340548 |
+--------------------+