longlong.h

浙江大学的悟空嵌入式系统模拟器

        // pre increment operator
    wxLongLongWx& operator++();

        // post increment operator
    wxLongLongWx& operator++(int) { return ++(*this); }

        // negation operator
    wxLongLongWx operator-() const;
    wxLongLongWx& Negate();

        // subraction
    wxLongLongWx operator-(const wxLongLongWx& ll) const;
    wxLongLongWx& operator-=(const wxLongLongWx& ll);

        // pre decrement operator
    wxLongLongWx& operator--();

        // post decrement operator
    wxLongLongWx& operator--(int) { return --(*this); }

    // shifts
        // left shift
    wxLongLongWx operator<<(int shift) const;
    wxLongLongWx& operator<<=(int shift);

        // right shift
    wxLongLongWx operator>>(int shift) const;
    wxLongLongWx& operator>>=(int shift);

    // bitwise operators
    wxLongLongWx operator&(const wxLongLongWx& ll) const;
    wxLongLongWx& operator&=(const wxLongLongWx& ll);
    wxLongLongWx operator|(const wxLongLongWx& ll) const;
    wxLongLongWx& operator|=(const wxLongLongWx& ll);
    wxLongLongWx operator^(const wxLongLongWx& ll) const;
    wxLongLongWx& operator^=(const wxLongLongWx& ll);
    wxLongLongWx operator~() const;

    // comparison
    bool operator==(const wxLongLongWx& ll) const
        { return m_lo == ll.m_lo && m_hi == ll.m_hi; }
    bool operator!=(const wxLongLongWx& ll) const
        { return !(*this == ll); }
    bool operator<(const wxLongLongWx& ll) const;
    bool operator>(const wxLongLongWx& ll) const;
    bool operator<=(const wxLongLongWx& ll) const
        { return *this < ll || *this == ll; }
    bool operator>=(const wxLongLongWx& ll) const
        { return *this > ll || *this == ll; }

    bool operator<(long l) const { return *this < wxLongLongWx(l); }
    bool operator>(long l) const { return *this > wxLongLongWx(l); }
    bool operator==(long l) const
    {
        return l >= 0 ? (m_hi == 0 && m_lo == (unsigned long)l)
                      : (m_hi == -1 && m_lo == (unsigned long)l);
    }

    bool operator<=(long l) const { return *this < l || *this == l; }
    bool operator>=(long l) const { return *this > l || *this == l; }

    // multiplication
    wxLongLongWx operator*(const wxLongLongWx& ll) const;
    wxLongLongWx& operator*=(const wxLongLongWx& ll);

    // division
    wxLongLongWx operator/(const wxLongLongWx& ll) const;
    wxLongLongWx& operator/=(const wxLongLongWx& ll);

    wxLongLongWx operator%(const wxLongLongWx& ll) const;

    void Divide(const wxLongLongWx& divisor,
                wxLongLongWx& quotient,
                wxLongLongWx& remainder) const;

    // input/output

    // return the string representation of this number
    wxString ToString() const;

    void *asArray() const;

#if wxUSE_STD_IOSTREAM
    friend wxSTD ostream& operator<<(wxSTD ostream&, const wxLongLongWx&);
#endif // wxUSE_STD_IOSTREAM

private:
    // long is at least 32 bits, so represent our 64bit number as 2 longs

    long m_hi;                // signed bit is in the high part
    unsigned long m_lo;

#ifdef wxLONGLONG_TEST_MODE
    void Check()
    {
        wxASSERT( (m_ll >> 32) == m_hi && (unsigned long)m_ll == m_lo );
    }

    wxLongLong_t m_ll;
#endif // wxLONGLONG_TEST_MODE
};


class WXDLLEXPORT wxULongLongWx
{
public:
    // ctors
        // default ctor initializes to 0
    wxULongLongWx()
    {
        m_lo = m_hi = 0;

#ifdef wxLONGLONG_TEST_MODE
        m_ll = 0;

        Check();
#endif // wxLONGLONG_TEST_MODE
    }
        // from ulong
    wxULongLongWx(unsigned long l) { *this = l; }
        // from 2 ulongs
    wxULongLongWx(unsigned long hi, unsigned long lo)
    {
        m_hi = hi;
        m_lo = lo;

#ifdef wxLONGLONG_TEST_MODE
        m_ll = hi;
        m_ll <<= 32;
        m_ll |= lo;

        Check();
#endif // wxLONGLONG_TEST_MODE
    }

    // default copy ctor is ok in both cases

    // no dtor

    // assignment operators
        // from long
    wxULongLongWx& operator=(unsigned long l)
    {
        m_lo = l;
        m_hi = 0;

#ifdef wxLONGLONG_TEST_MODE
        m_ll = l;

        Check();
#endif // wxLONGLONG_TEST_MODE

        return *this;
    }

    // can't have assignment operator from 2 longs

    // accessors
        // get high part
    unsigned long GetHi() const { return m_hi; }
        // get low part
    unsigned long GetLo() const { return m_lo; }

        // convert to long with range checking in the debug mode (only!)
    unsigned long ToULong() const
    {
        wxASSERT_MSG( m_hi == 0ul,
                      _T("wxULongLong to long conversion loss of precision") );

        return (unsigned long)m_lo;
    }

    // operations
        // addition
    wxULongLongWx operator+(const wxULongLongWx& ll) const;
    wxULongLongWx& operator+=(const wxULongLongWx& ll);
    wxULongLongWx operator+(unsigned long l) const;
    wxULongLongWx& operator+=(unsigned long l);

        // pre increment operator
    wxULongLongWx& operator++();

        // post increment operator
    wxULongLongWx& operator++(int) { return ++(*this); }

        // subraction (FIXME: should return wxLongLong)
    wxULongLongWx operator-(const wxULongLongWx& ll) const;
    wxULongLongWx& operator-=(const wxULongLongWx& ll);

        // pre decrement operator
    wxULongLongWx& operator--();

        // post decrement operator
    wxULongLongWx& operator--(int) { return --(*this); }

    // shifts
        // left shift
    wxULongLongWx operator<<(int shift) const;
    wxULongLongWx& operator<<=(int shift);

        // right shift
    wxULongLongWx operator>>(int shift) const;
    wxULongLongWx& operator>>=(int shift);

    // bitwise operators
    wxULongLongWx operator&(const wxULongLongWx& ll) const;
    wxULongLongWx& operator&=(const wxULongLongWx& ll);
    wxULongLongWx operator|(const wxULongLongWx& ll) const;
    wxULongLongWx& operator|=(const wxULongLongWx& ll);
    wxULongLongWx operator^(const wxULongLongWx& ll) const;
    wxULongLongWx& operator^=(const wxULongLongWx& ll);
    wxULongLongWx operator~() const;

    // comparison
    bool operator==(const wxULongLongWx& ll) const
        { return m_lo == ll.m_lo && m_hi == ll.m_hi; }
    bool operator!=(const wxULongLongWx& ll) const
        { return !(*this == ll); }
    bool operator<(const wxULongLongWx& ll) const;
    bool operator>(const wxULongLongWx& ll) const;
    bool operator<=(const wxULongLongWx& ll) const
        { return *this < ll || *this == ll; }
    bool operator>=(const wxULongLongWx& ll) const
        { return *this > ll || *this == ll; }

    bool operator<(unsigned long l) const { return *this < wxULongLongWx(l); }
    bool operator>(unsigned long l) const { return *this > wxULongLongWx(l); }
    bool operator==(unsigned long l) const
    {
        return (m_hi == 0 && m_lo == (unsigned long)l);
    }

    bool operator<=(unsigned long l) const { return *this < l || *this == l; }
    bool operator>=(unsigned long l) const { return *this > l || *this == l; }

    // multiplication
    wxULongLongWx operator*(const wxULongLongWx& ll) const;
    wxULongLongWx& operator*=(const wxULongLongWx& ll);

    // division
    wxULongLongWx operator/(const wxULongLongWx& ll) const;
    wxULongLongWx& operator/=(const wxULongLongWx& ll);

    wxULongLongWx operator%(const wxULongLongWx& ll) const;

    void Divide(const wxULongLongWx& divisor,
                wxULongLongWx& quotient,
                wxULongLongWx& remainder) const;

    // input/output

    // return the string representation of this number
    wxString ToString() const;

    void *asArray() const;

#if wxUSE_STD_IOSTREAM
    friend wxSTD ostream& operator<<(wxSTD ostream&, const wxULongLongWx&);
#endif // wxUSE_STD_IOSTREAM

private:
    // long is at least 32 bits, so represent our 64bit number as 2 longs

    unsigned long m_hi;
    unsigned long m_lo;

#ifdef wxLONGLONG_TEST_MODE
    void Check()
    {
        wxASSERT( (m_ll >> 32) == m_hi && (unsigned long)m_ll == m_lo );
    }

    unsigned wxLongLong_t m_ll;
#endif // wxLONGLONG_TEST_MODE
};

#endif // wxUSE_LONGLONG_WX

// ----------------------------------------------------------------------------
// binary operators
// ----------------------------------------------------------------------------

inline bool operator<(long l, const wxLongLong& ll) { return ll > l; }
inline bool operator>(long l, const wxLongLong& ll) { return ll < l; }
inline bool operator<=(long l, const wxLongLong& ll) { return ll >= l; }
inline bool operator>=(long l, const wxLongLong& ll) { return ll <= l; }
inline bool operator==(long l, const wxLongLong& ll) { return ll == l; }
inline bool operator!=(long l, const wxLongLong& ll) { return ll != l; }

inline wxLongLong operator+(long l, const wxLongLong& ll) { return ll + l; }
inline wxLongLong operator-(long l, const wxLongLong& ll)
{
    return wxLongLong(l) - ll;
}

inline bool operator<(unsigned long l, const wxULongLong& ull) { return ull > l; }
inline bool operator>(unsigned long l, const wxULongLong& ull) { return ull < l; }
inline bool operator<=(unsigned long l, const wxULongLong& ull) { return ull >= l; }
inline bool operator>=(unsigned long l, const wxULongLong& ull) { return ull <= l; }
inline bool operator==(unsigned long l, const wxULongLong& ull) { return ull == l; }
inline bool operator!=(unsigned long l, const wxULongLong& ull) { return ull != l; }

inline wxULongLong operator+(unsigned long l, const wxULongLong& ull) { return ull + l; }

// FIXME: this should return wxLongLong
inline wxULongLong operator-(unsigned long l, const wxULongLong& ull)
{
    return wxULongLong(l) - ull;
}

#endif // _WX_LONGLONG_H