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Incorrect eigvalue with ex4_8k input but correct to (10^-4 accuracy) with ex4_4k input  #10

@Hegden

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@Hegden

Program parameters (cpp): leaf-level diagonal block size=128, fmmTrigger=1024, mat2hsssym needs to be used.
Program parameters (matlab test3.m file): m0=128, N=2^10

With the above program parameters, compare the d output of superdc function of MATLAB and output.txt file of `.cpp.

an assert failure seen with cpp code (screenshot)
assert

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