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  1. Qt
  2. QTBUG-66466

QString::toDouble() doesn't parse -/+Infinity

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    • Icon: Bug Bug
    • Resolution: Invalid
    • Icon: Not Evaluated Not Evaluated
    • None
    • 5.10.0, 5.9.4
    • Core: QString and Unicode
    • None
    • Windows 10 x64, MSVC2015 x32

      The standard C++11 function std::stod and atof() can parse -/+Infinity constant,
      but QString::toDouble() not:

      bool ok;
double v1 = QString("Infinity").toDouble(&ok);   // v1=0, ok=false
double v2 = QString("+Infinity").toDouble(&ok);  // v2=0, ok=false
double v3 = QString("-Infinity").toDouble(&ok);  // v3=0, ok=false

double v4 = atof("Infinity");   // v4=inf
double v5 = atof("+Infinity");  // v5=inf
double v6 = atof("-Infinity");  // v6=-inf

      http://en.cppreference.com/w/cpp/string/basic_string/stof
      http://www.cplusplus.com/reference/cstdlib/atof/?kw=atof

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            thiago Thiago Macieira
            amiart Robert Szefner
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              Created:
              Updated:
              Resolved:

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