math.ldexp() function

math.ldexp() is the inverse of math.frexp(). It returns frac x 2**exp.

Function type signature

(exp: int, frac: float) => float

Parameters

frac

(Required) Fraction to use in the operation.

exp

(Required) Exponent to use in the operation.

Examples

• Return the inverse of math.frexp
• Use math.ldexp in map

Return the inverse of math.frexp

import "math"

math.ldexp(frac: 0.5, exp: 6)// 32.0

Use math.ldexp in map

import "math"

data
    |> map(fn: (r) => ({_time: r._time, tag: r.tag, _value: math.ldexp(frac: r.frac, exp: r.exp)}))