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isinf()
Applies to: ✅ Microsoft Fabric ✅ Azure Data Explorer ✅ Azure Monitor ✅ Microsoft 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 |
Related content
- 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().