0.0/0.0            //->nan
0.0/(-0.0)         //->nan
1.0/infinity       //->0.0
1.0/(-infinity)    //->0.0
1.0/0.0            //->infinity
1.0/(-0.0)         //->-infinity
-infinity<infinity //->true
(-0.0)<0.0         //->false