]> git.saurik.com Git - wxWidgets.git/blobdiff - src/common/longlong.cpp
bump subrelease number
[wxWidgets.git] / src / common / longlong.cpp
index ba47b870f989fdabf4a8620f871acba5031daa3e..e951865bffa0ab6edeaf6e97370ec7d5bff81576 100644 (file)
@@ -1,24 +1,20 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        wx/longlong.cpp
+// Name:        src/common/longlong.cpp
 // Purpose:     implementation of wxLongLongNative
 // Author:      Jeffrey C. Ollie <jeff@ollie.clive.ia.us>, Vadim Zeitlin
-// Remarks:     this class is not public in wxWindows 2.0! It is intentionally
+// Remarks:     this class is not public in wxWidgets 2.0! It is intentionally
 //              not documented and is for private use only.
 // Modified by:
 // Created:     10.02.99
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 // headers
 // ============================================================================
 
-#ifdef __GNUG__
-    #pragma implementation "longlong.h"
-#endif
-
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 #endif
 
 #if wxUSE_LONGLONG
+
 #include "wx/longlong.h"
 
-#include <memory.h>     // for memset()
-#include <math.h>       // for fabs()
+#ifndef WX_PRECOMP
+    #include "wx/math.h"       // for fabs()
+#endif
+
+#if wxUSE_STREAMS
+    #include "wx/txtstrm.h"
+#endif
+
+#include <string.h>            // for memset()
+
+#include "wx/ioswrap.h"
 
 // ============================================================================
 // implementation
@@ -45,18 +51,88 @@ void *wxLongLongNative::asArray() const
 {
     static unsigned char temp[8];
 
-    temp[0] = (m_ll >> 56) & 0xFF;
-    temp[1] = (m_ll >> 48) & 0xFF;
-    temp[2] = (m_ll >> 40) & 0xFF;
-    temp[3] = (m_ll >> 32) & 0xFF;
-    temp[4] = (m_ll >> 24) & 0xFF;
-    temp[5] = (m_ll >> 16) & 0xFF;
-    temp[6] = (m_ll >> 8)  & 0xFF;
-    temp[7] = (m_ll >> 0)  & 0xFF;
+    temp[0] = wx_truncate_cast(unsigned char, ((m_ll >> 56) & 0xFF));
+    temp[1] = wx_truncate_cast(unsigned char, ((m_ll >> 48) & 0xFF));
+    temp[2] = wx_truncate_cast(unsigned char, ((m_ll >> 40) & 0xFF));
+    temp[3] = wx_truncate_cast(unsigned char, ((m_ll >> 32) & 0xFF));
+    temp[4] = wx_truncate_cast(unsigned char, ((m_ll >> 24) & 0xFF));
+    temp[5] = wx_truncate_cast(unsigned char, ((m_ll >> 16) & 0xFF));
+    temp[6] = wx_truncate_cast(unsigned char, ((m_ll >> 8)  & 0xFF));
+    temp[7] = wx_truncate_cast(unsigned char, ((m_ll >> 0)  & 0xFF));
 
     return temp;
 }
 
+void *wxULongLongNative::asArray() const
+{
+    static unsigned char temp[8];
+
+    temp[0] = wx_truncate_cast(unsigned char, ((m_ll >> 56) & 0xFF));
+    temp[1] = wx_truncate_cast(unsigned char, ((m_ll >> 48) & 0xFF));
+    temp[2] = wx_truncate_cast(unsigned char, ((m_ll >> 40) & 0xFF));
+    temp[3] = wx_truncate_cast(unsigned char, ((m_ll >> 32) & 0xFF));
+    temp[4] = wx_truncate_cast(unsigned char, ((m_ll >> 24) & 0xFF));
+    temp[5] = wx_truncate_cast(unsigned char, ((m_ll >> 16) & 0xFF));
+    temp[6] = wx_truncate_cast(unsigned char, ((m_ll >> 8)  & 0xFF));
+    temp[7] = wx_truncate_cast(unsigned char, ((m_ll >> 0)  & 0xFF));
+
+    return temp;
+}
+
+#if wxUSE_LONGLONG_WX
+wxLongLongNative::wxLongLongNative(wxLongLongWx ll)
+{
+    // assign first to avoid precision loss!
+    m_ll = ll.GetHi();
+    m_ll <<= 32;
+    m_ll |= ll.GetLo();
+}
+
+wxLongLongNative& wxLongLongNative::operator=(wxLongLongWx ll)
+{
+    // assign first to avoid precision loss!
+    m_ll = ll.GetHi();
+    m_ll <<= 32;
+    m_ll |= ll.GetLo();
+    return *this;
+}
+
+wxLongLongNative& wxLongLongNative::operator=(const class wxULongLongWx &ll)
+{
+    // assign first to avoid precision loss!
+    m_ll = ll.GetHi();
+    m_ll <<= 32;
+    m_ll |= ll.GetLo();
+    return *this;
+}
+
+wxULongLongNative::wxULongLongNative(const class wxULongLongWx &ll)
+{
+    // assign first to avoid precision loss!
+    m_ll = ll.GetHi();
+    m_ll <<= 32;
+    m_ll |= ((unsigned long) ll.GetLo());
+}
+
+wxULongLongNative& wxULongLongNative::operator=(wxLongLongWx ll)
+{
+    // assign first to avoid precision loss!
+    m_ll = ll.GetHi();
+    m_ll <<= 32;
+    m_ll |= ((unsigned long) ll.GetLo());
+    return *this;
+}
+
+wxULongLongNative& wxULongLongNative::operator=(const class wxULongLongWx &ll)
+{
+    // assign first to avoid precision loss!
+    m_ll = ll.GetHi();
+    m_ll <<= 32;
+    m_ll |= ((unsigned long) ll.GetLo());
+    return *this;
+}
+#endif
+
 #endif // wxUSE_LONGLONG_NATIVE
 
 // ============================================================================
@@ -65,6 +141,14 @@ void *wxLongLongNative::asArray() const
 
 #if wxUSE_LONGLONG_WX
 
+// Set value from unsigned wxULongLongWx
+wxLongLongWx &wxLongLongWx::operator=(const class wxULongLongWx &ll)
+{
+    m_hi = (unsigned long) ll.GetHi();
+    m_lo = ll.GetLo();
+    return *this;
+}
+
 // assignment
 wxLongLongWx& wxLongLongWx::Assign(double d)
 {
@@ -93,6 +177,32 @@ wxLongLongWx& wxLongLongWx::Assign(double d)
     return *this;
 }
 
+double wxLongLongWx::ToDouble() const
+{
+    double d = m_hi;
+    d *= 1.0 + (double)ULONG_MAX;
+    d += m_lo;
+
+#ifdef wxLONGLONG_TEST_MODE
+    wxASSERT( d == m_ll );
+#endif // wxLONGLONG_TEST_MODE
+
+    return d;
+}
+
+double wxULongLongWx::ToDouble() const
+{
+    unsigned double d = m_hi;
+    d *= 1.0 + (double)ULONG_MAX;
+    d += m_lo;
+
+#ifdef wxLONGLONG_TEST_MODE
+    wxASSERT( d == m_ll );
+#endif // wxLONGLONG_TEST_MODE
+
+    return d;
+}
+
 wxLongLongWx wxLongLongWx::operator<<(int shift) const
 {
     wxLongLongWx ll(*this);
@@ -101,6 +211,14 @@ wxLongLongWx wxLongLongWx::operator<<(int shift) const
     return ll;
 }
 
+wxULongLongWx wxULongLongWx::operator<<(int shift) const
+{
+    wxULongLongWx ll(*this);
+    ll <<= shift;
+
+    return ll;
+}
+
 wxLongLongWx& wxLongLongWx::operator<<=(int shift)
 {
     if (shift != 0)
@@ -127,6 +245,32 @@ wxLongLongWx& wxLongLongWx::operator<<=(int shift)
     return *this;
 }
 
+wxULongLongWx& wxULongLongWx::operator<<=(int shift)
+{
+    if (shift != 0)
+    {
+        if (shift < 32)
+        {
+            m_hi <<= shift;
+            m_hi |= m_lo >> (32 - shift);
+            m_lo <<= shift;
+        }
+        else
+        {
+            m_hi = m_lo << (shift - 32);
+            m_lo = 0;
+        }
+    }
+
+#ifdef wxLONGLONG_TEST_MODE
+    m_ll <<= shift;
+
+    Check();
+#endif // wxLONGLONG_TEST_MODE
+
+    return *this;
+}
+
 wxLongLongWx wxLongLongWx::operator>>(int shift) const
 {
     wxLongLongWx ll(*this);
@@ -135,6 +279,14 @@ wxLongLongWx wxLongLongWx::operator>>(int shift) const
     return ll;
 }
 
+wxULongLongWx wxULongLongWx::operator>>(int shift) const
+{
+    wxULongLongWx ll(*this);
+    ll >>= shift;
+
+    return ll;
+}
+
 wxLongLongWx& wxLongLongWx::operator>>=(int shift)
 {
     if (shift != 0)
@@ -161,6 +313,32 @@ wxLongLongWx& wxLongLongWx::operator>>=(int shift)
     return *this;
 }
 
+wxULongLongWx& wxULongLongWx::operator>>=(int shift)
+{
+    if (shift != 0)
+    {
+        if (shift < 32)
+        {
+            m_lo >>= shift;
+            m_lo |= m_hi << (32 - shift);
+            m_hi >>= shift;
+        }
+        else
+        {
+            m_lo = m_hi >> (shift - 32);
+            m_hi = 0;
+        }
+    }
+
+#ifdef wxLONGLONG_TEST_MODE
+    m_ll >>= shift;
+
+    Check();
+#endif // wxLONGLONG_TEST_MODE
+
+    return *this;
+}
+
 wxLongLongWx wxLongLongWx::operator+(const wxLongLongWx& ll) const
 {
     wxLongLongWx res(*this);
@@ -169,6 +347,14 @@ wxLongLongWx wxLongLongWx::operator+(const wxLongLongWx& ll) const
     return res;
 }
 
+wxULongLongWx wxULongLongWx::operator+(const wxULongLongWx& ll) const
+{
+    wxULongLongWx res(*this);
+    res += ll;
+
+    return res;
+}
+
 wxLongLongWx wxLongLongWx::operator+(long l) const
 {
     wxLongLongWx res(*this);
@@ -177,6 +363,14 @@ wxLongLongWx wxLongLongWx::operator+(long l) const
     return res;
 }
 
+wxULongLongWx wxULongLongWx::operator+(unsigned long l) const
+{
+    wxULongLongWx res(*this);
+    res += l;
+
+    return res;
+}
+
 wxLongLongWx& wxLongLongWx::operator+=(const wxLongLongWx& ll)
 {
     unsigned long previous = m_lo;
@@ -196,6 +390,25 @@ wxLongLongWx& wxLongLongWx::operator+=(const wxLongLongWx& ll)
     return *this;
 }
 
+wxULongLongWx& wxULongLongWx::operator+=(const wxULongLongWx& ll)
+{
+    unsigned long previous = m_lo;
+
+    m_lo += ll.m_lo;
+    m_hi += ll.m_hi;
+
+    if ((m_lo < previous) || (m_lo < ll.m_lo))
+        m_hi++;
+
+#ifdef wxLONGLONG_TEST_MODE
+    m_ll += ll.m_ll;
+
+    Check();
+#endif // wxLONGLONG_TEST_MODE
+
+    return *this;
+}
+
 wxLongLongWx& wxLongLongWx::operator+=(long l)
 {
     unsigned long previous = m_lo;
@@ -216,6 +429,24 @@ wxLongLongWx& wxLongLongWx::operator+=(long l)
     return *this;
 }
 
+wxULongLongWx& wxULongLongWx::operator+=(unsigned long l)
+{
+    unsigned long previous = m_lo;
+
+    m_lo += l;
+
+    if ((m_lo < previous) || (m_lo < l))
+        m_hi++;
+
+#ifdef wxLONGLONG_TEST_MODE
+    m_ll += l;
+
+    Check();
+#endif // wxLONGLONG_TEST_MODE
+
+    return *this;
+}
+
 // pre increment
 wxLongLongWx& wxLongLongWx::operator++()
 {
@@ -232,6 +463,21 @@ wxLongLongWx& wxLongLongWx::operator++()
     return *this;
 }
 
+wxULongLongWx& wxULongLongWx::operator++()
+{
+    m_lo++;
+    if (m_lo == 0)
+        m_hi++;
+
+#ifdef wxLONGLONG_TEST_MODE
+    m_ll++;
+
+    Check();
+#endif // wxLONGLONG_TEST_MODE
+
+    return *this;
+}
+
 // negation
 wxLongLongWx wxLongLongWx::operator-() const
 {
@@ -269,6 +515,18 @@ wxLongLongWx wxLongLongWx::operator-(const wxLongLongWx& ll) const
     return res;
 }
 
+wxLongLongWx wxULongLongWx::operator-(const wxULongLongWx& ll) const
+{
+    wxASSERT(m_hi <= LONG_MAX );
+    wxASSERT(ll.m_hi <= LONG_MAX );
+
+    wxLongLongWx res( (long)m_hi , m_lo );
+    wxLongLongWx op( (long)ll.m_hi , ll.m_lo );
+    res -= op;
+
+    return res;
+}
+
 wxLongLongWx& wxLongLongWx::operator-=(const wxLongLongWx& ll)
 {
     unsigned long previous = m_lo;
@@ -288,6 +546,25 @@ wxLongLongWx& wxLongLongWx::operator-=(const wxLongLongWx& ll)
     return *this;
 }
 
+wxULongLongWx& wxULongLongWx::operator-=(const wxULongLongWx& ll)
+{
+    unsigned long previous = m_lo;
+
+    m_lo -= ll.m_lo;
+    m_hi -= ll.m_hi;
+
+    if (previous < ll.m_lo)
+        m_hi--;
+
+#ifdef wxLONGLONG_TEST_MODE
+    m_ll -= ll.m_ll;
+
+    Check();
+#endif // wxLONGLONG_TEST_MODE
+
+    return *this;
+}
+
 // pre decrement
 wxLongLongWx& wxLongLongWx::operator--()
 {
@@ -304,26 +581,61 @@ wxLongLongWx& wxLongLongWx::operator--()
     return *this;
 }
 
+wxULongLongWx& wxULongLongWx::operator--()
+{
+    m_lo--;
+    if (m_lo == 0xFFFFFFFF)
+        m_hi--;
+
+#ifdef wxLONGLONG_TEST_MODE
+    m_ll--;
+
+    Check();
+#endif // wxLONGLONG_TEST_MODE
+
+    return *this;
+}
+
 // comparison operators
 
 bool wxLongLongWx::operator<(const wxLongLongWx& ll) const
 {
     if ( m_hi < ll.m_hi )
-        return TRUE;
+        return true;
+    else if ( m_hi == ll.m_hi )
+        return m_lo < ll.m_lo;
+    else
+        return false;
+}
+
+bool wxULongLongWx::operator<(const wxULongLongWx& ll) const
+{
+    if ( m_hi < ll.m_hi )
+        return true;
     else if ( m_hi == ll.m_hi )
         return m_lo < ll.m_lo;
     else
-        return FALSE;
+        return false;
 }
 
 bool wxLongLongWx::operator>(const wxLongLongWx& ll) const
 {
     if ( m_hi > ll.m_hi )
-        return TRUE;
+        return true;
     else if ( m_hi == ll.m_hi )
         return m_lo > ll.m_lo;
     else
-        return FALSE;
+        return false;
+}
+
+bool wxULongLongWx::operator>(const wxULongLongWx& ll) const
+{
+    if ( m_hi > ll.m_hi )
+        return true;
+    else if ( m_hi == ll.m_hi )
+        return m_lo > ll.m_lo;
+    else
+        return false;
 }
 
 // bitwise operators
@@ -333,16 +645,31 @@ wxLongLongWx wxLongLongWx::operator&(const wxLongLongWx& ll) const
     return wxLongLongWx(m_hi & ll.m_hi, m_lo & ll.m_lo);
 }
 
+wxULongLongWx wxULongLongWx::operator&(const wxULongLongWx& ll) const
+{
+    return wxULongLongWx(m_hi & ll.m_hi, m_lo & ll.m_lo);
+}
+
 wxLongLongWx wxLongLongWx::operator|(const wxLongLongWx& ll) const
 {
     return wxLongLongWx(m_hi | ll.m_hi, m_lo | ll.m_lo);
 }
 
+wxULongLongWx wxULongLongWx::operator|(const wxULongLongWx& ll) const
+{
+    return wxULongLongWx(m_hi | ll.m_hi, m_lo | ll.m_lo);
+}
+
 wxLongLongWx wxLongLongWx::operator^(const wxLongLongWx& ll) const
 {
     return wxLongLongWx(m_hi ^ ll.m_hi, m_lo ^ ll.m_lo);
 }
 
+wxULongLongWx wxULongLongWx::operator^(const wxULongLongWx& ll) const
+{
+    return wxULongLongWx(m_hi ^ ll.m_hi, m_lo ^ ll.m_lo);
+}
+
 wxLongLongWx& wxLongLongWx::operator&=(const wxLongLongWx& ll)
 {
     m_lo &= ll.m_lo;
@@ -357,6 +684,20 @@ wxLongLongWx& wxLongLongWx::operator&=(const wxLongLongWx& ll)
     return *this;
 }
 
+wxULongLongWx& wxULongLongWx::operator&=(const wxULongLongWx& ll)
+{
+    m_lo &= ll.m_lo;
+    m_hi &= ll.m_hi;
+
+#ifdef wxLONGLONG_TEST_MODE
+    m_ll &= ll.m_ll;
+
+    Check();
+#endif // wxLONGLONG_TEST_MODE
+
+    return *this;
+}
+
 wxLongLongWx& wxLongLongWx::operator|=(const wxLongLongWx& ll)
 {
     m_lo |= ll.m_lo;
@@ -371,6 +712,20 @@ wxLongLongWx& wxLongLongWx::operator|=(const wxLongLongWx& ll)
     return *this;
 }
 
+wxULongLongWx& wxULongLongWx::operator|=(const wxULongLongWx& ll)
+{
+    m_lo |= ll.m_lo;
+    m_hi |= ll.m_hi;
+
+#ifdef wxLONGLONG_TEST_MODE
+    m_ll |= ll.m_ll;
+
+    Check();
+#endif // wxLONGLONG_TEST_MODE
+
+    return *this;
+}
+
 wxLongLongWx& wxLongLongWx::operator^=(const wxLongLongWx& ll)
 {
     m_lo ^= ll.m_lo;
@@ -385,11 +740,30 @@ wxLongLongWx& wxLongLongWx::operator^=(const wxLongLongWx& ll)
     return *this;
 }
 
+wxULongLongWx& wxULongLongWx::operator^=(const wxULongLongWx& ll)
+{
+    m_lo ^= ll.m_lo;
+    m_hi ^= ll.m_hi;
+
+#ifdef wxLONGLONG_TEST_MODE
+    m_ll ^= ll.m_ll;
+
+    Check();
+#endif // wxLONGLONG_TEST_MODE
+
+    return *this;
+}
+
 wxLongLongWx wxLongLongWx::operator~() const
 {
     return wxLongLongWx(~m_hi, ~m_lo);
 }
 
+wxULongLongWx wxULongLongWx::operator~() const
+{
+    return wxULongLongWx(~m_hi, ~m_lo);
+}
+
 // multiplication
 
 wxLongLongWx wxLongLongWx::operator*(const wxLongLongWx& ll) const
@@ -400,6 +774,14 @@ wxLongLongWx wxLongLongWx::operator*(const wxLongLongWx& ll) const
     return res;
 }
 
+wxULongLongWx wxULongLongWx::operator*(const wxULongLongWx& ll) const
+{
+    wxULongLongWx res(*this);
+    res *= ll;
+
+    return res;
+}
+
 wxLongLongWx& wxLongLongWx::operator*=(const wxLongLongWx& ll)
 {
     wxLongLongWx t(m_hi, m_lo);
@@ -432,11 +814,45 @@ wxLongLongWx& wxLongLongWx::operator*=(const wxLongLongWx& ll)
     return *this;
 }
 
+wxULongLongWx& wxULongLongWx::operator*=(const wxULongLongWx& ll)
+{
+    wxULongLongWx t(m_hi, m_lo);
+    wxULongLongWx q(ll.m_hi, ll.m_lo);
+
+    m_hi = m_lo = 0;
+
+#ifdef wxLONGLONG_TEST_MODE
+    wxULongLong_t llOld = m_ll;
+    m_ll = 0;
+#endif // wxLONGLONG_TEST_MODE
+
+    int counter = 0;
+    do
+    {
+        if ((q.m_lo & 1) != 0)
+            *this += t;
+        q >>= 1;
+        t <<= 1;
+        counter++;
+    }
+    while ((counter < 64) && ((q.m_hi != 0) || (q.m_lo != 0)));
+
+#ifdef wxLONGLONG_TEST_MODE
+    m_ll = llOld * ll.m_ll;
+
+    Check();
+#endif // wxLONGLONG_TEST_MODE
+
+    return *this;
+}
+
 // division
 
+#define IS_MSB_SET(ll)  ((ll.GetHi()) & (1 << (8*sizeof(long) - 1)))
+
 void wxLongLongWx::Divide(const wxLongLongWx& divisorIn,
                           wxLongLongWx& quotient,
-                          wxLongLongWx& remainder) const
+                          wxLongLongWx& remainderIO) const
 {
     if ((divisorIn.m_lo == 0) && (divisorIn.m_hi == 0))
     {
@@ -460,8 +876,7 @@ void wxLongLongWx::Divide(const wxLongLongWx& divisorIn,
     //     all responsibility for using this code.
 
     // init everything
-    wxLongLongWx dividend = *this,
-                 divisor = divisorIn;
+    wxULongLongWx dividend, divisor, remainder;
 
     quotient = 0l;
     remainder = 0l;
@@ -474,17 +889,21 @@ void wxLongLongWx::Divide(const wxLongLongWx& divisorIn,
     //      dividend = quotient*divisor + remainder
     //
     // with 0 <= abs(remainder) < abs(divisor)
-    bool negRemainder = dividend.m_hi < 0;
-    bool negQuotient = FALSE;   // assume positive
-    if ( dividend.m_hi < 0 )
+    bool negRemainder = GetHi() < 0;
+    bool negQuotient = false;   // assume positive
+    if ( GetHi() < 0 )
     {
         negQuotient = !negQuotient;
-        dividend = -dividend;
+        dividend = -*this;
+    } else {
+        dividend = *this;
     }
-    if ( divisor.m_hi < 0 )
+    if ( divisorIn.GetHi() < 0 )
     {
         negQuotient = !negQuotient;
-        divisor = -divisor;
+        divisor = -divisorIn;
+    } else {
+        divisor = divisorIn;
     }
 
     // check for some particular cases
@@ -498,12 +917,10 @@ void wxLongLongWx::Divide(const wxLongLongWx& divisorIn,
     }
     else
     {
-        // here: dividend > divisor and both are positibe: do unsigned division
+        // here: dividend > divisor and both are positive: do unsigned division
         size_t nBits = 64u;
         wxLongLongWx d;
 
-        #define IS_MSB_SET(ll)  ((ll.m_hi) & (1 << (8*sizeof(long) - 1)))
-
         while ( remainder < divisor )
         {
             remainder <<= 1;
@@ -543,10 +960,12 @@ void wxLongLongWx::Divide(const wxLongLongWx& divisorIn,
         }
     }
 
+    remainderIO = remainder;
+
     // adjust signs
     if ( negRemainder )
     {
-        remainder = -remainder;
+        remainderIO = -remainderIO;
     }
 
     if ( negQuotient )
@@ -555,6 +974,93 @@ void wxLongLongWx::Divide(const wxLongLongWx& divisorIn,
     }
 }
 
+void wxULongLongWx::Divide(const wxULongLongWx& divisorIn,
+                           wxULongLongWx& quotient,
+                           wxULongLongWx& remainder) const
+{
+    if ((divisorIn.m_lo == 0) && (divisorIn.m_hi == 0))
+    {
+        // provoke division by zero error and silence the compilers warnings
+        // about an expression without effect and unused variable
+        unsigned long dummy = divisorIn.m_lo/divisorIn.m_hi;
+        dummy += 0;
+    }
+
+    // VZ: I'm writing this in a hurry and it's surely not the fastest way to
+    //     do this - any improvements are more than welcome
+    //
+    //     code inspired by the snippet at
+    //          http://www.bearcave.com/software/divide.htm
+    //
+    //     Copyright notice:
+    //
+    //     Use of this program, for any purpose, is granted the author, Ian
+    //     Kaplan, as long as this copyright notice is included in the source
+    //     code or any source code derived from this program. The user assumes
+    //     all responsibility for using this code.
+
+    // init everything
+    wxULongLongWx dividend = *this,
+                  divisor = divisorIn;
+
+    quotient = 0l;
+    remainder = 0l;
+
+    // check for some particular cases
+    if ( divisor > dividend )
+    {
+        remainder = dividend;
+    }
+    else if ( divisor == dividend )
+    {
+        quotient = 1l;
+    }
+    else
+    {
+        // here: dividend > divisor
+        size_t nBits = 64u;
+        wxULongLongWx d;
+
+        while ( remainder < divisor )
+        {
+            remainder <<= 1;
+            if ( IS_MSB_SET(dividend) )
+            {
+                remainder |= 1;
+            }
+
+            d = dividend;
+            dividend <<= 1;
+
+            nBits--;
+        }
+
+        // undo the last loop iteration
+        dividend = d;
+        remainder >>= 1;
+        nBits++;
+
+        for ( size_t i = 0; i < nBits; i++ )
+        {
+            remainder <<= 1;
+            if ( IS_MSB_SET(dividend) )
+            {
+                remainder |= 1;
+            }
+
+            wxULongLongWx t = remainder - divisor;
+            dividend <<= 1;
+            quotient <<= 1;
+            if ( !IS_MSB_SET(t) )
+            {
+                quotient |= 1;
+
+                remainder = t;
+            }
+        }
+    }
+}
+
 wxLongLongWx wxLongLongWx::operator/(const wxLongLongWx& ll) const
 {
     wxLongLongWx quotient, remainder;
@@ -564,6 +1070,15 @@ wxLongLongWx wxLongLongWx::operator/(const wxLongLongWx& ll) const
     return quotient;
 }
 
+wxULongLongWx wxULongLongWx::operator/(const wxULongLongWx& ll) const
+{
+    wxULongLongWx quotient, remainder;
+
+    Divide(ll, quotient, remainder);
+
+    return quotient;
+}
+
 wxLongLongWx& wxLongLongWx::operator/=(const wxLongLongWx& ll)
 {
     wxLongLongWx quotient, remainder;
@@ -575,6 +1090,17 @@ wxLongLongWx& wxLongLongWx::operator/=(const wxLongLongWx& ll)
     return *this;
 }
 
+wxULongLongWx& wxULongLongWx::operator/=(const wxULongLongWx& ll)
+{
+    wxULongLongWx quotient, remainder;
+
+    Divide(ll, quotient, remainder);
+
+    *this = quotient;
+
+    return *this;
+}
+
 wxLongLongWx wxLongLongWx::operator%(const wxLongLongWx& ll) const
 {
     wxLongLongWx quotient, remainder;
@@ -584,6 +1110,15 @@ wxLongLongWx wxLongLongWx::operator%(const wxLongLongWx& ll) const
     return remainder;
 }
 
+wxULongLongWx wxULongLongWx::operator%(const wxULongLongWx& ll) const
+{
+    wxULongLongWx quotient, remainder;
+
+    Divide(ll, quotient, remainder);
+
+    return remainder;
+}
+
 // ----------------------------------------------------------------------------
 // misc
 // ----------------------------------------------------------------------------
@@ -605,53 +1140,224 @@ void *wxLongLongWx::asArray(void) const
     return temp;
 }
 
+void *wxULongLongWx::asArray(void) const
+{
+    static unsigned char temp[8];
+
+    temp[0] = (char)((m_hi >> 24) & 0xFF);
+    temp[1] = (char)((m_hi >> 16) & 0xFF);
+    temp[2] = (char)((m_hi >> 8)  & 0xFF);
+    temp[3] = (char)((m_hi >> 0)  & 0xFF);
+    temp[4] = (char)((m_lo >> 24) & 0xFF);
+    temp[5] = (char)((m_lo >> 16) & 0xFF);
+    temp[6] = (char)((m_lo >> 8)  & 0xFF);
+    temp[7] = (char)((m_lo >> 0)  & 0xFF);
+
+    return temp;
+}
+
 #endif // wxUSE_LONGLONG_WX
 
-wxString
+#define LL_TO_STRING(name)                                           \
+    wxString name::ToString() const                                  \
+    {                                                                \
+        /* TODO: this is awfully inefficient, anything better? */    \
+        wxString result;                                             \
+                                                                     \
+        name ll = *this;                                             \
+                                                                     \
+        bool neg = ll < 0;                                           \
+        if ( neg )                                                   \
+        {                                                            \
+            while ( ll != 0 )                                        \
+            {                                                        \
+                long digit = (ll % 10).ToLong();                     \
+                result.Prepend((wxChar)(_T('0') - digit));           \
+                ll /= 10;                                            \
+            }                                                        \
+        }                                                            \
+        else                                                         \
+        {                                                            \
+            while ( ll != 0 )                                        \
+            {                                                        \
+                long digit = (ll % 10).ToLong();                     \
+                result.Prepend((wxChar)(_T('0') + digit));           \
+                ll /= 10;                                            \
+            }                                                        \
+        }                                                            \
+                                                                     \
+        if ( result.empty() )                                        \
+            result = _T('0');                                        \
+        else if ( neg )                                              \
+            result.Prepend(_T('-'));                                 \
+                                                                     \
+        return result;                                               \
+    }
+
+#define ULL_TO_STRING(name)                                          \
+    wxString name::ToString() const                                  \
+    {                                                                \
+        /* TODO: this is awfully inefficient, anything better? */    \
+        wxString result;                                             \
+                                                                     \
+        name ll = *this;                                             \
+                                                                     \
+        while ( ll != 0 )                                            \
+        {                                                            \
+            result.Prepend((wxChar)(_T('0') + (ll % 10).ToULong())); \
+            ll /= 10;                                                \
+        }                                                            \
+                                                                     \
+        if ( result.empty() )                                        \
+            result = _T('0');                                        \
+                                                                     \
+        return result;                                               \
+    }
+
 #if wxUSE_LONGLONG_NATIVE
-wxLongLongNative::ToString() const
-#else
-wxLongLongWx::ToString() const
+    LL_TO_STRING(wxLongLongNative)
+    ULL_TO_STRING(wxULongLongNative)
 #endif
+
+#if wxUSE_LONGLONG_WX
+    LL_TO_STRING(wxLongLongWx)
+    ULL_TO_STRING(wxULongLongWx)
+#endif
+
+#if wxUSE_STD_IOSTREAM
+
+// input/output
+WXDLLIMPEXP_BASE
+wxSTD ostream& operator<< (wxSTD ostream& o, const wxLongLong& ll)
+{
+    return o << ll.ToString();
+}
+
+WXDLLIMPEXP_BASE
+wxSTD ostream& operator<< (wxSTD ostream& o, const wxULongLong& ll)
 {
-    // TODO: this is awfully inefficient, anything better?
-    wxString result;
+    return o << ll.ToString();
+}
 
-    wxLongLong ll = *this;
+#endif // wxUSE_STD_IOSTREAM
 
-    bool neg;
-    if ( ll < 0 )
-    {
-        ll.Negate();
-        neg = TRUE;
+WXDLLIMPEXP_BASE wxString& operator<< (wxString& s, const wxLongLong& ll)
+{
+    return s << ll.ToString();
+}
+
+WXDLLIMPEXP_BASE wxString& operator<< (wxString& s, const wxULongLong& ll)
+{
+    return s << ll.ToString();
+}
+
+#if wxUSE_STREAMS
+
+WXDLLIMPEXP_BASE wxTextOutputStream& operator<< (wxTextOutputStream& o, const wxULongLong& ll)
+{
+    return o << ll.ToString();
+}
+
+WXDLLIMPEXP_BASE wxTextOutputStream& operator<< (wxTextOutputStream& o, const wxLongLong& ll)
+{
+    return o << ll.ToString();
+}
+
+#define READ_STRING_CHAR(s, idx, len) ((wxChar) ((idx!=len) ? s[idx++] : 0))
+
+WXDLLIMPEXP_BASE class wxTextInputStream &operator>>(class wxTextInputStream &o, wxULongLong &ll)
+{
+    wxString s = o.ReadWord();
+
+    ll = wxULongLong(0l, 0l);
+    size_t length = s.length();
+    size_t idx = 0;
+
+    wxChar ch = READ_STRING_CHAR(s, idx, length);
+
+    // Skip WS
+    while (ch==wxT(' ') || ch==wxT('\t'))
+        ch = READ_STRING_CHAR(s, idx, length);
+
+    // Read number
+    wxULongLong multiplier(0l, 10l);
+    while (ch>=wxT('0') && ch<=wxT('9')) {
+        long lValue = (unsigned) (ch - wxT('0'));
+        ll = ll * multiplier + wxULongLong(0l, lValue);
+        ch = READ_STRING_CHAR(s, idx, length);
     }
-    else
-    {
-        neg = FALSE;
+
+    return o;
+}
+
+WXDLLIMPEXP_BASE class wxTextInputStream &operator>>(class wxTextInputStream &o, wxLongLong &ll)
+{
+    wxString s = o.ReadWord();
+
+    ll = wxLongLong(0l, 0l);
+    size_t length = s.length();
+    size_t idx = 0;
+
+    wxChar ch = READ_STRING_CHAR(s, idx, length);
+
+    // Skip WS
+    while (ch==wxT(' ') || ch==wxT('\t'))
+        ch = READ_STRING_CHAR(s, idx, length);
+
+    // Ask for sign
+    int iSign = 1;
+    if (ch==wxT('-') || ch==wxT('+')) {
+        iSign = ((ch==wxT('-')) ? -1 : 1);
+        ch = READ_STRING_CHAR(s, idx, length);
     }
 
-    while ( ll != 0 )
-    {
-        result.Prepend((wxChar)(_T('0') + (ll % 10).ToLong()));
-        ll /= 10;
+    // Read number
+    wxLongLong multiplier(0l, 10l);
+    while (ch>=wxT('0') && ch<=wxT('9')) {
+        long lValue = (unsigned) (ch - wxT('0'));
+        ll = ll * multiplier + wxLongLong(0l, lValue);
+        ch = READ_STRING_CHAR(s, idx, length);
     }
 
-    if ( result.empty() )
-        result = _T('0');
-    else if ( neg )
-        result.Prepend(_T('-'));
+#if wxUSE_LONGLONG_NATIVE
+    ll = ll * wxLongLong((wxLongLong_t) iSign);
+#else
+    ll = ll * wxLongLong((long) iSign);
+#endif
 
-    return result;
+    return o;
 }
 
-#if wxUSE_STD_IOSTREAM
+#if wxUSE_LONGLONG_NATIVE
 
-// input/output
-wxSTD ostream& operator<< (wxSTD ostream& o, const wxLongLong& ll)
+WXDLLIMPEXP_BASE class wxTextOutputStream &operator<<(class wxTextOutputStream &o, wxULongLong_t value)
 {
-    return o << ll.ToString();
+    return o << wxULongLong(value).ToString();
 }
 
-#endif // wxUSE_STD_IOSTREAM
+WXDLLIMPEXP_BASE class wxTextOutputStream &operator<<(class wxTextOutputStream &o, wxLongLong_t value)
+{
+    return o << wxLongLong(value).ToString();
+}
+
+WXDLLIMPEXP_BASE class wxTextInputStream &operator>>(class wxTextInputStream &o, wxULongLong_t &value)
+{
+    wxULongLong ll;
+    o >> ll;
+    value = ll.GetValue();
+    return o;
+}
+
+WXDLLIMPEXP_BASE class wxTextInputStream &operator>>(class wxTextInputStream &o, wxLongLong_t &value)
+{
+    wxLongLong ll;
+    o >> ll;
+    value = ll.GetValue();
+    return o;
+}
+
+#endif // wxUSE_LONGLONG_NATIVE
+
+#endif // wxUSE_STREAMS
 
 #endif // wxUSE_LONGLONG