Function rastrigin_hessian_const

pub fn rastrigin_hessian_const<const N: usize, T>(param: &[T; N]) -> [[T; N]; N]
where
    T: Float + FromPrimitive + Sum + Into<f64>,

Hessian of Rastrigin test function

This is the const generics version, which requires the number of parameters to be known at compile time.