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  1. Qt
  2. QTBUG-127310

qCheckSum CRC algorithm name

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Details

    • Bug
    • Resolution: Unresolved
    • P3: Somewhat important
    • None
    • 6.8
    • Core: Other, Documentation
    • None
    • All

    Description

      As doc says "implementation of the CRC-16-CCITT algorithm." I am confused because by default the algorithm published in ISO 3309 is used, or you can set "calculation based on ITU-V.41". In fact there is no option to use CRC-16-CCITT, isn't it?

      2) I also suggest to add more information about "ISO 3309" algo. Internet says that it is has a lot of well-known alias: CRC-16/ISO-HDLC, CRC-16/ISO-IEC-14443-3-B, CRC-16/X-25, CRC-B, X-25 and looks like only The Qt Company use "ISO 3309", I think it is not clear for people.
      2.1) As I know "ISO 3309" is not correct name, should be "ISO/IEC 3309" and it is deprecated. I suggest to drop deprecated standard from the Qt doc.

      3) "calculation based on ITU-V.41" looks very unpopular. Zero user mentioned about it on Qt Forum. Anyone really use it? If no I suggest to remove from Qt.

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            docteam Qt Documentation Team
            dungeonlords Andrei Cherniaev
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            Dates

              Created:
              Updated:

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