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  1. Qt
  2. QTBUG-33913

QJsonValue toDouble() conversion causes loss of data

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Not Evaluated
    • Resolution: Invalid
    • Affects Version/s: 5.1.0
    • Fix Version/s: None
    • Component/s: Core: Other
    • Labels:
      None
    • Environment:
      windows-7

      Description

      QJsonObject obj;
      obj.insert("dbl",double(73183493944884961));

      double d = obj.value("dbl").toDouble();
      qulonglong ul = d;
      qulonglong ul2 = 73183493944884961;

      qDebug () << ul << ul2;
      //output : 73183493944884960 73183493944884961

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-31926 Number precision in QJsonDocument.toJson() is still not enough for double

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
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            Activity

              People

              Assignee:
              thiago Thiago Macieira
              Reporter:
              ashish.soni ashish soni
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                Dates

                Created:
                Updated:
                Resolved:

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