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isfinite()

Applies to: ✅ Microsoft FabricAzure Data ExplorerAzure MonitorMicrosoft Sentinel

Returns whether the input is a finite value, meaning it's not infinite or NaN.

Syntax

isfinite(number)

Learn more about syntax conventions.

Parameters

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

Returns

true if x is finite and false otherwise.

Example

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

Output

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