anchor.diff:         test_evaluate_curve_barycentric, test_evaluate_multi, &
          test_specialize_curve, test_evaluate_hodograph, test_subdivide_nodes, &
          subdivide_points_check, test_newton_refine, test_locate_point, &
  -       test_elevate_nodes
  +       test_elevate_nodes, test_get_curvature
     public curve_all_tests
   
   contains
  
positive.code: 
    end subroutine test_elevate_nodes
  
  end module test_curve
  
negative.code:     call test_newton_refine(success)
      call test_locate_point(success)
      call test_elevate_nodes(success)
      call test_get_curvature(success)
  
    end subroutine curve_all_tests
  
  