Function mat3::inv_mat2

pub fn inv_mat2<'out, T>(out: &'out mut [T; 9], a: &[T; 4]) -> &'out mut [T; 9] where
    T: Clone + One + Zero + Add<T, Output = T> + Sub<T, Output = T>,
    &'a T: Mul<&'b T, Output = T> + Div<&'b T, Output = T>, 

Example

let mut m = mat3::new_identity::<f32>();
mat3::inv_mat2(&mut m, &[1_f32, 0_f32, 0_f32, 1_f32]);
assert_eq!(m, mat3::new_identity::<f32>());