pub trait Real: PowOps + TrigOps + ExpLogOps + Neg + PartialOrd + Add<Output = Self> + Mul<Output = Self> + Div<Output = Self> + Sub<Output = Self> + Add<f64, Output = Self> + Mul<f64, Output = Self> + Div<f64, Output = Self> + Sub<f64, Output = Self> + Clone + Copy {
fn to_f64(&self) -> f64;
fn from_f64(f: f64) -> Self;
fn to_ad(&self) -> AD;
}