Function skeletal_animation::math::mat4_inv_det

pub fn mat4_inv_det<T>(mat: [[T; 4]; 4]) -> T where
    T: Copy + One + Add<T, Output = T> + Mul<T, Output = T> + Sub<T, Output = T> + Div<T, Output = T>, 

Computes the inverse determinant of a 4x4 matrix.