find the base e logarithm of a number in swift

In Swift, we can find the base e logarithm of a number using the log function from the Foundation framework. This function takes two arguments: the number to find the logarithm for, and the base of the logarithm. When the base is not specified, the function uses the natural logarithm (base e) by default.

Here's an example code snippet that demonstrates how to find the natural logarithm of a number in Swift:

main.swift
import Foundation

let x = 10.0
let naturalLog = log(x)
print(naturalLog) // Output: 2.302585092994046
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In this example, we imported the Foundation framework to use the log function. We then declared a constant x and assigned it the value of 10.0. Finally, we called the log function with x as the argument to find the natural logarithm of x, and printed the result to the console.

Note that the log function returns the logarithm in radians. To convert it to degrees, we can multiply the result by 180/Double.pi.