How do I best determine if something is "NaN"?

1 次查看（过去 30 天）
Arielle
Arielle 2013-5-15
I am calculating the ILU factorization of a matrix (repeatedly over a large number of iterations) and at some point norm(U\(L\A)-eye(n),'fro') evaluates to "NaN" (and therefore GMRES does not work). I would like to catch the code immediately before it calls GMRES when this occurs. What is the best way to ask Matlab to stop when norm(U\(L\A)-eye(n),'fro') is NaN?

请先登录，再回答此问题。

采纳的回答

Dr. Seis
Dr. Seis 2013-5-15
See documentation for isnan

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Logical 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by