find the natural logarithm of a number in rust

To find the natural logarithm (ln) of a number in Rust, you can use the ln function provided by the std::f64 module. Here's an example code snippet:

main.rs
fn main() {
    let x = 10.0; // the number we want to take the natural logarithm of
    let result = x.ln(); // call the ln() method
    println!("The natural logarithm of {} is {}", x, result);
}
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In this code, we first define the number x that we want to take the natural logarithm of. We then call the ln() method on x, which returns the natural logarithm of x. Finally, we print out the result using println!().