Function calendrical_calculations::persian::arithmetic_persian_from_fixed

pub fn arithmetic_persian_from_fixed(
    date: RataDie,
) -> Result<(i32, u8, u8), I32CastError>

Lisp code reference: https://github.com/EdReingold/calendar-code2/blob/main/calendar.l#L4857 Not used, but kept for comparative purposes