如果你真的要数小数点后的位数，你可能要转换为字符串，删除任何尾随零，看看小数点落在哪里。

If you actually want to count the number of decimals, you'd probably have to convert to a string, remove any trailing zeroes, and see where the decimal point landed.

youdao

如果你真的要数小数点后的位数，你可能要转换为字符串，删除任何尾随零，看看小数点落在哪里。

If you actually want to count the number of decimals, you'd probably have to convert to a string, remove any trailing zeroes, and see where the decimal point landed.

youdao