C++ (Cpp) shiftOneDigit示例

示例#1

文件： registerhandler.cpp 项目： karakin/qt-creator

void RegisterValue::fromString(const QString &str, RegisterFormat format)
{
    known = !str.isEmpty();
    v.u64[1] = v.u64[0] = 0;

    const int n = str.size();
    int pos = 0;
    if (str.startsWith("0x"))
        pos += 2;

    bool negative = pos < n && str.at(pos) == '-';
    if (negative)
        ++pos;

    while (pos < n) {
        uint c = str.at(pos).unicode();
        if (format != CharacterFormat) {
            c = decodeHexChar(c);
            if (c == uint(-1))
                break;
        }
        shiftOneDigit(c, format);
        ++pos;
    }

    if (negative) {
        v.u64[1] = ~v.u64[1];
        v.u64[0] = ~v.u64[0];
        ++v.u64[0];
        if (v.u64[0] == 0)
            ++v.u64[1];
    }
}

示例#2

文件： registerhandler.cpp 项目： DuinoDu/qt-creator

void RegisterValue::fromByteArray(const QByteArray &ba, RegisterFormat format)
{
    known = !ba.isEmpty();
    v.u64[1] = v.u64[0] = 0;

    const int n = ba.size();
    int pos = 0;
    if (ba.startsWith("0x"))
        pos += 2;

    bool negative = pos < n && ba.at(pos) == '-';
    if (negative)
        ++pos;

    while (pos < n) {
        uint c = ba.at(pos);
        if (format != CharacterFormat) {
            c = decodeHexChar(c);
            if (c == uint(-1))
                break;
        }
        shiftOneDigit(c, format);
        ++pos;
    }

    if (negative) {
        v.u64[1] = ~v.u64[1];
        v.u64[0] = ~v.u64[0];
        ++v.u64[0];
        if (v.u64[0] == 0)
            ++v.u64[1];
    }
}