Function IsLosslessFloat

rapidjson/document.h:992–1000

Checks whether a number can be losslessly converted to a float.

    }
    // Checks whether a number can be losslessly converted to a float.
    bool IsLosslessFloat() const {
        if (!IsNumber()) return false;
        double a = GetDouble();
        if (a < static_cast<double>(-std::numeric_limits<float>::max())
                || a > static_cast<double>(std::numeric_limits<float>::max()))
            return false;
        double b = static_cast<double>(static_cast<float>(a));
        return a >= b && a <= b;    // Prevent -Wfloat-equal
    }

    //@}