isfinite()

Learn how to use the isfinite() function to check if the input is a finite value.

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

Syntax

isfinite(number)

Parameters

NameTypeRequiredDescription
numberreal✔️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

xydivisfinite
-10-∞0
00NaN0
10∞0

Related content

  • 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().