一个数字是Windows批处理文件比另一个更大既少 [英] A number is both greater and less than another in a windows batch file

问题描述

我有以下的code在我的批处理文件：

I have the following code in my batch file:

if %bakfilesize% geq %freespacet% echo baksize is larger
if %bakfilesize% leq %freespacet% echo baksize is smaller   

当我运行它，我在屏幕上得到以下的输出：

When I run it, I get the following output on screen:

if 399502220288 GEQ 463777075200 echo baksize is larger
baksize is larger

if 399502220288 LEQ 463777075200 echo baksize is smaller
baksize is smaller

谁能告诉我是怎么回事呢？我已经尝试了简单的版本与数字1和2，和窗口可以确认1确实是小于2，那么，为什么在这种情况下失败？

Can anyone tell me what is going on here? I have tried a simple version with the numbers 1 and 2, and windows can confirm that 1 is indeed less than 2, so why is it failing in this instance?

我只真正需要的GEQ语句来工作。另一种是在展示的古怪

I only really need the geq statement to work. The other one is in to demonstrate the oddness.

推荐答案

确定，在这种情况下，这个问题很简单。试试这个，因为它是在你的例子：

OK, in this case, the problem is quite simple. Try this as it is in your example:

set /a bakfilesize=399502220288

您将收到此错误：

无效号码。数字仅限于precision的32位。

Invalid number. Numbers are limited to 32-bits of precision.

因此​​，这意味着你正在处理的数字过大和DOS将无法给他们propperly比较。

So this means that the numbers you are handling are too big and DOS won't be able to compare them propperly.

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