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Always use feenableexcept() when doing floating point math
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Bert Hubert's writings
This is a refreshed & expanded copy of a very old page I hosted outside of this blog. I recently ran into “silent NaNs” again, and thought it might be a good idea to republish this advice here.
A small post that documents something that almost no one appears to know. And if you do anything with floating point, you do need to know.
Exceptions In C or C++, try this: