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The proposed techniques have been implemented in Fortran 77, and have
been tested on a computer having a DEC Alpha 21164(533 MHz) chip as
the CPU (except for the results in Fig.3.49). In FMM, we
truncate the infinite series via (3.133). Also, we set the maximum
number of boundary elements in a leaf to be 100. The integrals in
(3.128) are computed numerically with Gaussian
quadrature. In GMRES we terminate the iteration when the relative error
is less than 10^{-5}. To solve the resulting matrix equation we use
the preconditioned GMRES (The issue of the choice of the preconditioners
will be touched upon later).

*Ken-ichi Yoshida*

*2001-07-28*