if you use exactly the same literal two times then you can be sure that the representation is the same. so his example would work perfectly fine if the var conversion weren't involved. that's why i said that it isn't a typical floating point problem. if you don't compare literals but some calculated values then you have to be more cautious of course.

no, you are not good to go with quants. if you use 1 quant = 1 meter you will get precision problems. if you use 1 quant = 1 centimeter then your world size will be limited.