improved code readability
improved code readability

kimwalisch/primesieve,fredwang00/primesieve,ZahidDev/primesieve,fredwang00/primesieve,anatoliyrazin/primesieve,ZahidDev/primesieve,tempbottle/primesieve,ZahidDev/primesieve,kimwalisch/primesieve,kimwalisch/primesieve,anatoliyrazin/primesieve,tempbottle/primesieve,anatoliyrazin/primesieve,tempbottle/primesieve,fredwang00/primesieve