Documentation

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.

Parameters

x

(Required) Value to evaluate.

Examples

Test if a value is negative

import "math"

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

Use math.signbit in map

import "math"

data
    |> 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!


Introducing InfluxDB 3.0

The new core of InfluxDB built with Rust and Apache Arrow. Available today in InfluxDB Cloud Dedicated.

Learn more

State of the InfluxDB Cloud Serverless documentation

The new documentation for InfluxDB Cloud Serverless is a work in progress. We are adding new information and content almost daily. Thank you for your patience!

If there is specific information you’re looking for, please submit a documentation issue.