This the code for the Wideband Fast Multipole Method for 2D Helmholtz equation.testrun.c is a test or demonstration file to use wfmm() . By modifying testrun.c file, the Wideband FMM can be used. Instruction1.Unzip the file wfmm.zip.2.Compile with gcc version 4.2 or newer (GNU compiler) by typing >> make3.Run>>./testwfmm4.Output will be save in the fmmlog.txt fileIn default, N 300*300 in [-10, 10]^2 box, k.re 1.0, k.im 0.0, and NT 8 (number of cores, defined in wfmm.h ) are used. The error in fmmlog.txt file must be around 5.043416e-07. It will slightly vary depending on machine and compiler version. (The sample_output.pdf file is one of fmmlog.txt file)Also note that the CPU time for FMM and direct calculation will be differ the table depending on the computers and complier.In order to generate table in the paper, change N, k.re and k.im in the testrun.c file to the number specified in the table and th

complex.c
__MACOSX
........\._complex.c
complex.h
__MACOSX\._complex.h
fmmexact.c
__MACOSX\._fmmexact.c
fmmexact.h
__MACOSX\._fmmexact.h
fmmmesh.c
__MACOSX\._fmmmesh.c
fmmmesh.h
__MACOSX\._fmmmesh.h
fmmoperator.c
__MACOSX\._fmmoperator.c
fmmoperator.h
__MACOSX\._fmmoperator.h
fmmstep2.c
__MACOSX\._fmmstep2.c
fmmstep2.h
__MACOSX\._fmmstep2.h
fmmstep3.c
__MACOSX\._fmmstep3.c
fmmstep3.h
__MACOSX\._fmmstep3.h
fmmstep4.c
__MACOSX\._fmmstep4.c
fmmstep4.h
__MACOSX\._fmmstep4.h
fmmstep5.c
__MACOSX\._fmmstep5.c
fmmstep5.h
__MACOSX\._fmmstep5.h
fmmstep6.c
__MACOSX\._fmmstep6.c
fmmstep6.h
__MACOSX\._fmmstep6.h
hankel.c
__MACOSX\._hankel.c
hankel.h
__MACOSX\._hankel.h
makefile
__MACOSX\._makefile
readme.rtf
__MACOSX\._readme.rtf
sample_output.pdf
__MACOSX\._sample_output.pdf
sort.c
__MACOSX\._sort.c
sort.h
__MACOSX\._sort.h
testrun.c
__MACOSX\._testrun.c
wfmm.c
__MACOSX\._wfmm.c
wfmm.h
__MACOSX\._wfmm.h

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