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https://issues.apache.org/jira/browse/PDFBOX-1778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13819948#comment-13819948
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Tilman Hausherr commented on PDFBOX-1778:
-----------------------------------------
"I solve rounding problem": does this sentence mean that you did solve the
problem (then please post your patch), or that you are planning to solve the
problem in the future (then please do also post the patch when done). IMHO the
rounding issue should be solved first (especially considering that it is the
title of this issue).
> Rounding issue in generated PDF file
> ------------------------------------
>
> Key: PDFBOX-1778
> URL: https://issues.apache.org/jira/browse/PDFBOX-1778
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel, Signing
> Affects Versions: 1.8.3
> Reporter: vakhtang koroghlishvili
> Priority: Critical
> Attachments: original.pdf, saved.pdf
>
>
> We have PDF file which was signed by some other application.
> When we try to sign it with PDFbox, previous revision is damaged.
> We did some investigations and found such problem:
> (question on stackoverflow is here:
> http://stackoverflow.com/questions/19903884/pdf-document-is-modified-by-another-revision/19905271?noredirect=1#19905271
> )
> Some PDF tags are changed in new revisions.
> For example values of following tags:
> /WhitePoint
> /Gamma
> /Matrix
> are changed from values like this: 0.9505
> to values like this: 0.9505000114
> We think this is problem of converting float/double inside COSFloat.
> Following code just opens and saves PDF file and this operation changes
> values of mentioned text:
> public void saveTo(String sourceFile, String destFile) throws Exception{
> PDDocument doc = PDDocument.load(new FileInputStream(sourceFile));
> doc.save(new FileOutputStream(destFile));
> }
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