Revert "Merge pull request #7098 from ahocevar/no-math-round"
Revert "Merge pull request #7098 from ahocevar/no-math-round"

This reverts commit 5b756667558ff95892cdcaf8abdb743c602f8e46, reversing
changes made to ff9ef481db8e7e0e02a0933320ff96036a1afaf0.

stweil/ol3,fredj/ol3,bjornharrtell/ol3,geekdenz/openlayers,stweil/openlayers,ahocevar/openlayers,planetlabs/ol3,mzur/ol3,oterral/ol3,oterral/ol3,planetlabs/ol3,geekdenz/ol3,planetlabs/ol3,fredj/ol3,planetlabs/ol3,mzur/ol3,ahocevar/ol3,gingerik/ol3,mzur/ol3,gingerik/ol3,stweil/openlayers,bjornharrtell/ol3,bjornharrtell/ol3,stweil/ol3,adube/ol3,geekdenz/openlayers,geekdenz/ol3,tschaub/ol3,openlayers/openlayers,stweil/ol3,fredj/ol3,geekdenz/ol3,ahocevar/ol3,gingerik/ol3,geekdenz/openlayers,adube/ol3,ahocevar/openlayers,geekdenz/ol3,oterral/ol3,ahocevar/ol3,tschaub/ol3,ahocevar/ol3,gingerik/ol3,ahocevar/openlayers,stweil/openlayers,fredj/ol3,openlayers/openlayers,mzur/ol3,tschaub/ol3,stweil/ol3,adube/ol3,openlayers/openlayers,tschaub/ol3