ln()

The ln() method in Kotlin’s math class is used to calculate the natural logarithm of a number.

Syntax

ln(n)

• n: The number of type Double for which the logarithm is to be calculated.

The ln() method returns a value of type Double, the logarithm of n to e. The following values represent special cases:

• ln(NaN) is NaN
• ln(n) is NaN if n < 0.0
• ln(+Inf) is +Inf
• ln(0.0) is -Inf

Example

This example shows how to use the ln() method to calculate the natural logarithm of 6:

import kotlin.math.*

fun main(){
    println(ln(6.0))
}

The output of this code will be:

1.791759469228055