vincenzo 0.0.2

A BitTorrent protocol library that powers the Vincenzo client.
Documentation 
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//! Utility functions
/// transform bytes into a human readable format.
pub fn to_human_readable(mut n: f64) -> String {
    let units = ["B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"];
    let delimiter = 1024_f64;
    if n < delimiter {
        return format!("{} {}", n, "B");
    }
    let mut u: i32 = 0;
    let r = 10_f64;
    while (n * r).round() / r >= delimiter && u < (units.len() as i32) - 1 {
        n /= delimiter;
        u += 1;
    }
    format!("{:.2} {}", n, units[u as usize])
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    pub fn readable_size() {
        let n = 495353_f64;
        assert_eq!(to_human_readable(n), "483.74 KiB");

        let n = 30_178_876_f64;
        assert_eq!(to_human_readable(n), "28.78 MiB");

        let n = 2093903856_f64;
        assert_eq!(to_human_readable(n), "1.95 GiB");
    }
}