ear_algae/rotor/
cross_product.rs

1use crate::{Vect, ops::Cross, traits::Field};
2
3impl<S: Field> Cross for Vect<2, S> {
4    type Output = Vect<1, S>;
5
6    fn cross(self, other: Self) -> Vect<1, S> {
7        Vect([self[0].mul(other[1]).sub(other[0].mul(self[1]))])
8    }
9}
10
11impl<S: Field> Cross for Vect<3, S> {
12    type Output = Vect<3, S>;
13
14    fn cross(self, other: Self) -> Vect<3, S> {
15        Vect([
16            self[1].mul(other[2]).sub(other[1].mul(self[2])),
17            self[2].mul(other[0]).sub(other[2].mul(self[0])),
18            self[0].mul(other[1]).sub(other[0].mul(self[1])),
19        ])
20    }
21}