Example 1.

Proposed scheme at

The scheme in [8] at

Orderq

CPU-time, sec

Orderq

CPU-time, sec

10

0.458 (−2)

0.000

0.584 (−3)

0.000

20

0.579 (−3)

2.982

0.000

0.324 (−4)

4.171

0.031

40

0.425 (−4)

3.768

0.015

0.200 (−5)

4.017

0.124

80

0.276 (−5)

3.944

0.218

0.249 (−6)

3.006

0.483