Extrapolation Algorithm for Computing Multiple Cauchy Principal Value Integrals

Table 5

Extrapolation errors of the rectangle rule with .

16	−1.1103e − 01
32	−6.1657e − 02	−1.2288e − 02
64	−3.2546e − 02	−3.4355e − 03	−4.8471e − 04
128	−1.6726e − 02	−9.0658e − 04	−6.3594e − 05	−3.4340e − 06
256	−8.4795e − 03	−2.3270e − 04	−8.0783e − 06	−1.4752e − 07
512	−4.2692e − 03	−5.8938e − 05	−1.0154e − 06	−6.4608e − 09
1024	−2.1420e − 03	−1.4830e − 05	−1.2720e − 07	−3.0565e − 10