ACOSH

Description

Returns the hyperbolic arc cosine of x, or NULL if x is less than 1.

Syntax

ACOSH(<x>)

Parameters

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

Return Value

The acosh value of parameter x.

Example

select acosh(0.0);

+------------+
| acosh(0.0) |
+------------+
|       NULL |
+------------+

select acosh(-1.0);

+-------------+
| acosh(-1.0) |
+-------------+
|        NULL |
+-------------+

select acosh(1.0);

+------------+
| acosh(1.0) |
+------------+
|          0 |
+------------+

select acosh(10.0);

+-------------------+
| acosh(10.0)       |
+-------------------+
| 2.993222846126381 |
+-------------------+