Function grad_ref_func

python/test/unit/fem/test_interpolation.py:1101–1105

(x)

        return -3 * x[0] ** 2 + x[1] ** 2

    def grad_ref_func(x):
        values = np.zeros((2, x.shape[1]), dtype=default_scalar_type)
        values[0] = -6 * x[0]
        values[1] = 2 * x[1]
        return values

    def modified_grad(x):
        grad = grad_ref_func(x)