Documentation

math.lgamma() function

math.lgamma() returns the natural logarithm and sign (-1 or +1) of math.gamma(x:x).

Function type signature
(x: float) => {sign: int, lgamma: float}
For more information, see Function type signatures.

Parameters

x

(Required) Value to operate on.

Examples

Return the natural logarithm and sign of a gamma function

import "math"

math.lgamma(x: 3.14)// {lgamma: 0.8261387047770286, sign: 1}


Use math.lgamma in map

import "sampledata"
import "math"

sampledata.float()
    |> map(
        fn: (r) => {
            result = math.lgamma(x: r._value)

            return {r with lgamma: result.lgamma, sign: result.sign}
        },
    )

View example input and ouput


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