isinf()

Learn how to use the isinf() function to check if the input is an infinite value.

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

Syntax

isinf(number)

Parameters

NameTypeRequiredDescription
numberreal✔️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

xydivisinf
-10-∞true
00NaNfalse
10∞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().