div division 中文意思是什麼
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The div operator performs floating - point division, the mod operator returns the remainder from a truncating division. the floor function returns the largest closest to positive infinity number that is not greater than the argument and that is an integer. the ceiling function returns the smallest closest to negative infinity number that is not less than the argument and that is an integer
Div運算符做浮點除法運算， mod運算符做求余運算， floor函數返回不大於參數的最大整數趨近於正無窮， ceiling返回不小於參數的最小整數趨近於負無窮
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