Divide successfully or default to zero

main.rs

trait OrZero {
    fn or_zero(self) -> Self;
}

impl OrZero for f64 {
    fn or_zero(self) -> Self {
        if self.is_normal() { self } else { 0.0 }
    }
}

impl OrZero for f32 {
    fn or_zero(self) -> Self {
        if self.is_normal() { self } else { 0.0 }
    }
}

fn main() {
    let inf = 3.1 / 0.0;
    let nan = 0.0 / 0.0;
    println!("{:?} {:?}", inf, nan);
    // inf NaN

    let inf = (3.1 / 0.0).or_zero();
    let nan = (0.0 / 0.0).or_zero();
    println!("{:?} {:?}", inf, nan);
    // 0.0 0.0
}