Documentation

math.isNaN() function

math.isNaN() reports whether f is an IEEE 754 “not-a-number” value.

Function type signature
(f: float) => bool
For more information, see Function type signatures.

Parameters

f

(Required) Value to operate on.

Examples

Check if a value is a NaN float value

import "math"

math.isNaN(f: 12.345)// false

Use math.isNaN in map

import "math"

data
    |> map(fn: (r) => ({r with _value: math.isNaN(f: r._value)}))

View example input and output


Was this page helpful?

Thank you for your feedback!


Linux Package Signing Key Rotation

All signed InfluxData Linux packages have been resigned with an updated key. If using Linux, you may need to update your package configuration to continue to download and verify InfluxData software packages.

For more information, see the Linux Package Signing Key Rotation blog post.