docs-v2/content/flux/v0/stdlib/math/log.md

title	description	menu	weight
math.log() function	`math.log()` returns the natural logarithm of `x`.	flux_v0_ref name parent identifier math.log math math/log	101

math.log() returns the natural logarithm of x.

Function type signature

(x: float) => float

{{% caption %}} For more information, see Function type signatures. {{% /caption %}}

Parameters

x

({{< req >}}) Value to operate on.

Examples

• Return the natural logarithm of a value
• Use math.log in map

Return the natural logarithm of a value

import "math"

math.log(x: 3.14)// 1.144222799920162

Use math.log in map

import "sampledata"
import "math"

sampledata.float()
    |> map(fn: (r) => ({r with _value: math.log(x: r._value)}))