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Topic: Avoid underflow for det(A)
Replies: 5   Last Post: Dec 6, 2012 3:48 AM

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Xiaoqian Sun

Posts: 30
Registered: 12/7/04
Avoid underflow for det(A)
Posted: Jul 6, 2005 1:03 PM
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I have a lot of rectangular matrices with dimension more than 500.
And their determinants are very small, from
1e-5000 to 1e-1000. I need to compute log(det(A)). If I use
log(det(A)) in MATLAB, it will create Inf because of underflow
problem. Who knows how to avoid such a kind of problem in MATLAB?



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