Function skeletal_animation::math::mat2x3_inv

pub fn mat2x3_inv<T>(mat: [[T; 3]; 2]) -> [[T; 3]; 2] where
    T: Copy + One + Add<T, Output = T> + Mul<T, Output = T> + Sub<T, Output = T> + Div<T, Output = T> + Neg<Output = T>, 

Computes the inverse of a 2x3 matrix.