isinf()

Applies to: ✅ Azure Data ExplorerAzure MonitorMicrosoft Sentinel

Returns whether the input is an infinite (positive or negative) value.

Syntax

isinf(number)

Learn more about syntax conventions.

Parameters

Name Type Required Description
number real ✔️ The value to check if infinite.

Returns

true if x is a positive or negative infinite and false otherwise.

Example

range x from -1 to 1 step 1
| extend y = 0.0
| extend div = 1.0*x/y
| extend isinf=isinf(div)

Output

x y div isinf
-1 0 -∞ true
0 0 NaN false
1 0 true
  • To check if a value is null, see isnull().
  • To check if a value is finite, see isfinite().
  • To check if a value is NaN (Not-a-Number), see isnan().