Table 3: Comparison of optimal 4-point sixteenth-order I.F.s.

function16th FK16th G K 1 16th G K 2
| 𝑥 3 𝑥 | COC | 𝑥 3 𝑥 | COC | 𝑥 3 𝑥 | COC

𝑓 _ 1 , 𝑥 _ 0 = 1 0.137e-36215.9890.353e-58115.9810.103e-52215.998
𝑓 _ 2 , 𝑥 _ 0 = 1 . 3 0.898e-67016.0000.994e-78216.0000.723e-81115.987
𝑓 _ 3 , 𝑥 _ 0 = 2 . 5 0.479e-20015.928failfail0.819e-31615.978
𝑓 _ 4 , 𝑥 _ 0 = 0 . 2 5 0.492e-315516.0000.241e-245516.0000.516e-207116.000
𝑓 _ 5 , 𝑥 _ 0 = 2 . 5 0.142e-81016.0000.164e-114715.9930.452e-102016.000
𝑓 _ 6 , 𝑥 _ 0 = 1 / 6 0.224e-170216.0000.172e-100415.9920.782e-89216.000
𝑓 _ 7 , 𝑥 _ 0 = 3 . 5 0.927e-446416.0000.241e-414416.0000.136e-376316.000