Function day_of_year

nodedb/src/control/sequence/format.rs:207–218

Day of year (1-based ordinal).

(year: i32, month: u8, day: u8)

/// Day of year (1-based ordinal).
fn day_of_year(year: i32, month: u8, day: u8) -> u16 {
    let days_in_months: [u16; 12] = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
    let is_leap = (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
    let mut doy: u16 = day as u16;
    for (m, &dim) in days_in_months.iter().enumerate().take(month as usize - 1) {
        doy += dim;
        if m == 1 && is_leap {
            doy += 1;
        }
    }
    doy
}

/// ISO day of week: 1=Monday .. 7=Sunday (Tomohiko Sakamoto's algorithm).
fn day_of_week_iso(year: i32, month: u8, day: u8) -> u8 {