math.signbit() function

math.signbit() reports whether x is negative or negative zero.

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



(Required) Value to evaluate.


Test if a value is negative

import "math"

math.signbit(x: -1.2)// true

Use math.signbit in map

import "math"

    |> map(fn: (r) => ({r with _value: math.signbit(x: 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.