Brian Blocher created PDFBOX-5326:
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Summary: TTFSubsetter incorrectly calculating 'searchRange'
Key: PDFBOX-5326
URL: https://issues.apache.org/jira/browse/PDFBOX-5326
Project: PDFBox
Issue Type: Bug
Components: FontBox
Affects Versions: 2.0.24
Reporter: Brian Blocher
The log2 method in TTFSubsetter is incorrectly calling _round_ instead of
_floor_ on the log2 result.
If
{code:java}
Math.log(num) / Math.log(2){code}
results in a whole number, the searchRange is correct but decimal results could
get rounded up or down.
The spec calls for a _floor_ of the result.
https://docs.microsoft.com/en-us/typography/opentype/spec/cmap#:~:text=uint16-,searchRange,-Maximum%20power%20of
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