Math.round()错误的计算在AS3?错误、Math、round

2023-09-08 13:39:25 作者:手插口袋谁都不爱

谁能解释一下吗?

我是什么做错了吗?

推荐答案

Math.Round(X:编号)x舍入到最近的整数值。在你的情况下,28是28.499999999999996最接近的整数值。因此,这里的行为是正确的。什么是奇怪的是,0.285 * 100不是28.5,但毕竟是在AS3 Number类的precision的结果。下面是关于这一点,多一点信息,可能的解决方案:

Math.Round(x:Number) rounds x to the nearest integer value. In your case 28 is the nearest integer value for 28.499999999999996. So here the behavior is correct. What is weird is that 0.285 * 100 is not 28.5, but that is a consequence of the precision of the Number class in as3. Here is a little more information about this and a possible solution:

Innacurate数学成绩

另外可以看到此等问题:

Also you can see this SO question:

Very陌生号码的操作问题

希望这有助于。