1.0 link Rainbow Dash Network http://rainbowdash.net/ adiwan (adiwan) http://rainbowdash.net/adiwan http://rainbowdash.net/notice/2663397 @<span class="vcard"><a href="http://rainbowdash.net/user/1089" class="url" title="BronieBrown"><span class="fn nickname">broniebrown</span></a></span> This is the code I used <a href="http://pastebin.com/GKChMveB" title="http://pastebin.com/GKChMveB" rel="nofollow external">http://pastebin.com/GKChMveB</a> I visualize the sign of the doubles in a 256x256 image (blue negative, red positive, yellow zero).