explain_cache_coherent.rs

/// Source: https://gist.github.com/dns2utf8/11b541f0b4165f1cc39472c15f494a00
fn main() {
    let mut result = 0;
    let list = vec![-8, 30, -42, 32];
    
    println!("init result = {}!", result);
    println!("init list = {:?}!", list);
    
    absolute_max(&mut result, &list);
    println!("final result = {}!", result);
}

fn absolute_max(result: &mut i64, list: &Vec<i64>) {
    for i in list {
        let i = *i;
        let result_local = *result;
        
        let abs_i = if i < 0 { -i } else { i };
        let abs_r = if result_local < 0 { -result_local } else { result_local };
        if abs_r < abs_i {
            *result = i;
        }
    }
}

Run on play.rust-lang.org