利用Matlab计算小数除法时,计算结果出现问题

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远东 谢
远东 谢 el 13 de Mzo. de 2023
Respondida: Abhijeet el 6 de Abr. de 2023
计算2.47/0.01时,输出247.0000,此时对结果使用ceil函数,得到的结果是278。但是计算2.471/0.001和24.7/0.1时均直接得到整数结果。

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Abhijeet
Abhijeet el 6 de Abr. de 2023
Hi,
You have encountered a round-off error that demonstrates a fundamental problem with the way computers deal with fractional numbers. Some numbers (in fact, "most" of them) cannot be represented exactly in binary form -- specifically, fractional numbers that are not powers of two. This will occur in any computer program using ANSI/IEEE standard math.
You can refer to this answer for the same.
Thanks

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