Function add_grouped

compiler/src/modules/vm/handlers/format.rs:308–316

(digits: &str, group: usize, sep: u8)

}

fn add_grouped(digits: &str, group: usize, sep: u8) -> String {
    let mut out = String::with_capacity(digits.len() + digits.len() / group);
    let chars: alloc::vec::Vec<char> = digits.chars().collect();
    for (i, &c) in chars.iter().enumerate() {
        if i > 0 && (chars.len() - i).is_multiple_of(group) { out.push(sep as char); }
        out.push(c);
    }
    out
}

fn add_thousands_float(s: &str, sep: u8) -> String {
    /* Insert separators only in the integer portion (before `.` / `e`). */