time_calc.rs

[VladDrgm]

No description provided.

[VladDrgm]

Cannot find logarithm functions in the Rust crates. They are needed in order to solve this, as the formula for time calculation is

t = ln(A/P) / n[ln(1 + r/n)], where ln = natural logarithm

[boorich]

Would a macro like this help you:

macro_rules! log_of {
    ($val:expr, $base:expr, $type:ty) => {
         ($val as f32).log($base) as $type
    }
}

fn main() {
    println!("{}", log_of!(4096, 2., usize));
}

[VladDrgm]

made some changes. trying to use it.

macro_rules! log_of {
    ($val:expr, $base:expr, $type:ty) => {
         ($val as f32).log($base) as $type
    }
}

ln(A/P) would be log_of!(A/P, 2., usize) ?

[VladDrgm]

I think I managed to make it work.
Would like to test tying the commit to the issue so they both close automatically, which is why I'm not pull requesting now.