Which algorithm eig () function use ?

I always thought the default eigenvalue algorithm was the QR algorithm ( http://people.inf.ethz.ch/arbenz/ewp/Lnotes/chapter3.pdf ), but this is just a guess...

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Answer 3

Abdullah Khan 2013-9-10

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Any version , gotta implement the ago on FPGA

Thanks

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Jan 2013-9-10

Do I understand correctly, that your question does not concern Matlab's eig() function, but that you are searching for a general algorithm? Then asking WikiPedia might be a better idea than a Matlab forum.

MD SHAHNAWAZ HUSSAIN 2019-3-10

can u plz tell me which algo has been used for eig() in matlab 2014a and 2018b?

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Answer 4

Christine Tobler 2019-3-11

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There are different algorithms for solving eigenvalue problems, depending on the properties of the inputs. The most well-known standard library for linear algebra operations is LAPACK, which is open source. Here is a reference page on solving eigenvalue problems from LAPACK:

https://www.netlib.org/lapack/lug/node37.html

and here's a list of some LAPACK functions related to solving the eigenvalue problem:

http://www.netlib.org/lapack/explore-html/d9/d8e/group__double_g_eeigen.html

If you need MATLAB code that calls EIG to be translated to C code, you could also look at MATLAB Coder, which will generate C code to solve, for example, an eigenvalue problem if EIG is used.