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Out of curiosity, what's the meaning of "denormal flushing" in the context of floating point arithmetic? Do you know a good reference for such topic?

I have some book but actually i can't find anything.

I need to understand how this definition is usually applied when a math library (i.e. function approximation) is going to be implemented, and how this definition somehow influence the ulp error of the function implemented compared to the "real" function.

user8469759
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  • That i need this explanation applied in function approximation, and some pseudocode as far as trivial this could be, it would be helpful. – user8469759 Jun 11 '15 at 09:53
  • Is it ok now? Sorry for before – user8469759 Jun 11 '15 at 10:09
  • The first thing you would want to clarify is whether ulp error can be computed in a meaningful way when the result is zero because flush-to-zero is in effect. I would claim that it is not. – njuffa Jun 11 '15 at 17:47

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