argmin_testfunctions

Function eggholder_hessian

Source 
pub fn eggholder_hessian<T>(param: &[T; 2]) -> [[T; 2]; 2]
where
    T: Float + FromPrimitive,
Expand description

Hessian of Eggholder test function

This function can return NaN elements under the following conditions:

  • |x1 - x2 - 47| <= EPS && x1 != 0
  • |x2 - x1 + 47| <= EPS && x1 != 0
  • |x1/2 + x2 + 47| <= EPS && |x2 + 47| != 0