Compare double to zero using epsilon

Question

Today, I was looking through some C++ code (written by somebody else) and found this section:

double someValue = ...
if (someValue <  std::numeric_limits&         


        

Answer 1

I think that depend on the precision of your computer. Take a look on this table: you can see that if your epsilon is represented by double, but your precision is higher, the comparison is not equivalent to

someValue == 0.0

Good question anyway!