Different results for the floating point operations
<p>I'm having a small issue, I have some code that calculates a mean value from a given set of data, I do this from several different computers (some with linux, some with windows, some 32bits and others 64bits), but when I watch the database results the some values that should be equal are slightly different.</p>

<p>This makes no difference for my program but I was wondering why it was this way, I was under the impression that floating point operations with the same word lenght should yield the same result (I was obviously wrong).</p>

<p>This is a small sample code that I wrote to check:</p>

<pre><code>public class Test{
    public static void main(String... args){
        double counter = 0, value = 1./10;

        for (int i = 0; i &lt; 1000000; i++){
            counter += value;
        }

        System.out.println(counter);
    }
}
</code></pre>

<p>It basically calculates 1000000 / 10, I know that the result won't be exact but in some pcs it prints a number that is slightly less than 100000 and in other cases it prints a number slightly greater.</p>
