math.floor
时间: 2023-09-13 15:13:08 浏览: 87
Math.floor是一个数学函数,它的英文含义是“地板”,所以它的作用是向下取整。它会返回不大于自变量的最大整数。例如,Math.floor(3.1)和Math.floor(3.9)都会返回3,而Math.floor(-2.1)和Math.floor(-2.9)都会返回-3。\[2\]另外,Math.floor(x+0.5)也可以用来实现四舍五入的效果,即将原来的数加0.5后向下取整。例如,Math.floor(9.6)的结果是10,Math.floor(-9.6)的结果是-10。\[1\]\[3\]
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