find the base e logarithm of a number in rust

To find the base e logarithm of a number in Rust, you can use the ln function from the std::f64 module of the standard library. This function returns the natural logarithm (base e logarithm) of the given number.

Here's an example code snippet that demonstrates how to use the ln function in Rust:

main.rs
fn main() {
    let x = 10.0;
    let result = x.ln(); // natural logarithm of x
    println!("ln({}) = {}", x, result);
}
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In this code snippet, we first define a variable x and initialize it with the value 10.0. Then, we call the ln method on x to compute the natural logarithm of x. Finally, we print the result using println! macro.

The output of this program will be:

main.rs
ln(10) = 2.302585092994046
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