The** ****log()**** function** in Swift calculates the natural logarithm of a number. We can find it in Swift's `Foundation`

library.

The mathematical representation of the `log()`

function is as follows:

The syntax for the `log()`

function is as follows:

log(number)// The number should be floating, double, or real.

This function requires a number for which the logarithm is to be calculated. It must be greater than 0.

`log()`

returns the natural logarithm of the number sent as a parameter.

The code below shows the use of the `log()`

function in Swift.

import Swiftimport Foundation// Positive integerprint ("The value of log(4.0) : ", log(4.0));//Positive double valueprint ("The value of log(4.4) : ",log(4.4));//Eprint ("The value of log(M_E) : ",log(M_E));//Exceptional outputprint ("The value of log(-4.5) : ",log(-4.5));print ("The value of log(0.0) : ",log(0.0));

- Line 2: We add the
`Foundation`

header required for the`log()`

function.

- Line 4: We calculate the natural log value of the positive integer using
`log()`

. - Line 7: We calculate the natural log of the positive double value using
`log()`

.

- Line 10: We calculate the natural log of "E" using
`log()`

.

- Lines 13–15: We calculate the natural log of exceptional values using
`log()`

.

TRENDING TOPICS