The Format() Function Gives Different Results in Windows XP Than in Windows 2000

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This article was previously published under Q321047

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SYMPTOMS

The Format function in Windows XP has changed. Numbers are rounded differently than they are in all other versions of Windows (such as Microsoft Windows 2000, Microsoft Windows NT, Microsoft Windows Millennium Edition, Microsoft Windows 98, or Microsoft Windows 95). For example, if you format the number 125.245:

Result in Windows 2000: 125.25
Result in Windows XP: 125.24

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RESOLUTION

To resolve this problem, obtain the latest service pack for Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

322389 (http://support.microsoft.com/kb/322389/EN-US/ ) How to Obtain the Latest Windows XP Service Pack

The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

   Date          Time    Version       Size      File name
   ----------------------------------------------------------
   03-May-2002   11:52   3.50.5015.0    77,824   Asycfilt.dll
   03-May-2002   11:51   3.50.5015.0   569,344   Oleaut32.dll
   03-May-2002   11:52   5.0.5015.0    106,496   Olepro32.dll

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows XP Service Pack 1.

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MORE INFORMATION

Software developers who want more control over rounding should implement their own custom rounding routine. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

196652 (http://support.microsoft.com/kb/196652/EN-US/ ) HOW TO: Implement Custom Rounding Procedures

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