math.expm1() function

math.expm1() returns e**x - 1, the base-e exponential of x minus 1. It is more accurate than math.exp(x:x) - 1 when x is near zero.

Function type signature

(x: float) => float

Parameters

x

(Required) Value to operate on.

Examples

• Get more accurate base-e exponentials for values near zero
• Use math.expm1 in map

Get more accurate base-e exponentials for values near zero

import "math"

math.expm1(x: 0.022)// 0.022243784470438233

Use math.expm1 in map

import "math"

data
    |> map(fn: (r) => ({r with _value: math.expm1(x: r._value)}))