Is it possible to get 0 by subtracting two unequal floating point numbers?

Question

Is it possible to get division by 0 (or infinity) in the following example?

public double calculation(double a, double          


        

Answer 1

Based on @malarres response and @Taemyr comment, here is my little contribution:

public double calculation(double a, double b)
{
     double c = 2 / (a - b);

     // Should not have a big cost.
     if (isnan(c) || isinf(c))
     {
         return 0; // A 'whatever' value.
     }
     else
     {
         return c;
     }
}

My point is to says: the easyest way to know if the result of the division is nan or inf is actualy to perform the division.