Re: high-precision eigenvalue solver

Thank you for all your suggestions. I found a library in c++ supporting
quadruple precision and the problem is solved at last with the help of
the lib. However, it takes almost 10 times longer than that in double
precision. I am searching a faster package. A guy told me lapack is
great. However, I found, from http://www.netlib.org/lapack/, lapack
only support double precision.

.

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