There are many reasons for canceling rounding. First of all, the cancellation of rounding may be due to specific calculation requirements, and it is necessary to keep more accurate decimal places instead of approximate rounding. For example, in the field of scientific research or finance, accurate calculation results are very important for data analysis and decision-making, so it may be necessary to cancel rounding to ensure the accuracy of the results.
In addition, rounding can be cancelled to avoid the accumulation of rounding errors. In some calculation processes, if rounding is carried out for many times, rounding errors may gradually accumulate, leading to a decline in the accuracy of the results. Therefore, in order to reduce the accumulation of errors, it is sometimes necessary to cancel rounding and adopt a more accurate calculation method, such as truncation or rounding.
It should be noted that canceling rounding may reduce the accuracy of the results, so you need to weigh the pros and cons when making decisions. In certain computing scenarios, we can choose whether to cancel rounding according to specific needs. For the case that the accuracy of the result is required, you can consider canceling rounding; Generally speaking, rounding can provide a sufficiently approximate result.