// Name: wx/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__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "longlong.h"
#endif
#endif
#if wxUSE_LONGLONG
-
#include "wx/longlong.h"
+#include "wx/math.h" // for fabs()
+#if defined(__MWERKS__) && defined(__WXMSW__)
+#include <string.h> // for memset()
+#else
#include <memory.h> // for memset()
+#endif
+
+#include "wx/ioswrap.h"
// ============================================================================
// implementation
// misc
// ----------------------------------------------------------------------------
-void *wxLongLongNative::asArray(void) const
+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] = (unsigned char)((m_ll >> 56) & 0xFF);
+ temp[1] = (unsigned char)((m_ll >> 48) & 0xFF);
+ temp[2] = (unsigned char)((m_ll >> 40) & 0xFF);
+ temp[3] = (unsigned char)((m_ll >> 32) & 0xFF);
+ temp[4] = (unsigned char)((m_ll >> 24) & 0xFF);
+ temp[5] = (unsigned char)((m_ll >> 16) & 0xFF);
+ temp[6] = (unsigned char)((m_ll >> 8) & 0xFF);
+ temp[7] = (unsigned char)((m_ll >> 0) & 0xFF);
return temp;
}
-#if wxUSE_STD_IOSTREAM
+void *wxULongLongNative::asArray() const
+{
+ static unsigned char temp[8];
-// input/output
-ostream& operator<< (ostream& o, const wxLongLongNative& ll)
+ temp[0] = (unsigned char)((m_ll >> 56) & 0xFF);
+ temp[1] = (unsigned char)((m_ll >> 48) & 0xFF);
+ temp[2] = (unsigned char)((m_ll >> 40) & 0xFF);
+ temp[3] = (unsigned char)((m_ll >> 32) & 0xFF);
+ temp[4] = (unsigned char)((m_ll >> 24) & 0xFF);
+ temp[5] = (unsigned char)((m_ll >> 16) & 0xFF);
+ temp[6] = (unsigned char)((m_ll >> 8) & 0xFF);
+ temp[7] = (unsigned char)((m_ll >> 0) & 0xFF);
+
+ return temp;
+}
+
+#if wxUSE_LONGLONG_WX
+wxLongLongNative::wxLongLongNative(wxLongLongWx ll)
{
- char result[65];
+ // 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;
+}
+#endif
- memset(result, 'A', 64);
+#endif // wxUSE_LONGLONG_NATIVE
+
+// ============================================================================
+// wxLongLongWx: emulation of 'long long' using 2 longs
+// ============================================================================
- result[64] = '\0';
+#if wxUSE_LONGLONG_WX
- for (int i = 0; i < 64; i++)
+// assignment
+wxLongLongWx& wxLongLongWx::Assign(double d)
+{
+ bool positive = d >= 0;
+ d = fabs(d);
+ if ( d <= ULONG_MAX )
{
- result[63 - i] = '0' + (char) ((ll.m_ll >> i) & 1);
+ m_hi = 0;
+ m_lo = (long)d;
}
+ else
+ {
+ m_hi = (unsigned long)(d / (1.0 + (double)ULONG_MAX));
+ m_lo = (unsigned long)(d - ((double)m_hi * (1.0 + (double)ULONG_MAX)));
+ }
+
+#ifdef wxLONGLONG_TEST_MODE
+ m_ll = (wxLongLong_t)d;
+
+ Check();
+#endif // wxLONGLONG_TEST_MODE
+
+ if ( !positive )
+ Negate();
- return o << result;
+ return *this;
}
-#endif // wxUSE_STD_IOSTREAM
+double wxLongLongWx::ToDouble() const
+{
+ double d = m_hi;
+ d *= 1.0 + (double)ULONG_MAX;
+ d += m_lo;
-#endif // wxUSE_LONGLONG_NATIVE
+#ifdef wxLONGLONG_TEST_MODE
+ wxASSERT( d == m_ll );
+#endif // wxLONGLONG_TEST_MODE
-#if wxUSE_LONGLONG_WX
+ return d;
+}
wxLongLongWx wxLongLongWx::operator<<(int shift) const
{
- if (shift == 0)
- return *this;
+ wxLongLongWx ll(*this);
+ ll <<= shift;
- if (shift < 32)
- return wxLongLongWx((m_hi << shift) | (m_lo >> (32 - shift)),
- m_lo << shift);
- else
- return wxLongLongWx(m_lo << (shift - 32),
- 0);
+ return ll;
}
-wxLongLongWx& wxLongLongWx::operator<<=(int shift)
+wxULongLongWx wxULongLongWx::operator<<(int shift) const
{
- if (shift == 0)
- return *this;
+ wxULongLongWx ll(*this);
+ ll <<= shift;
+
+ return ll;
+}
- if (shift < 32)
+wxLongLongWx& wxLongLongWx::operator<<=(int shift)
+{
+ if (shift != 0)
{
- m_hi <<= shift;
- m_hi |= m_lo >> (32 - shift);
- m_lo <<= shift;
+ 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;
+ }
}
- else
+
+#ifdef wxLONGLONG_TEST_MODE
+ m_ll <<= shift;
+
+ Check();
+#endif // wxLONGLONG_TEST_MODE
+
+ return *this;
+}
+
+wxULongLongWx& wxULongLongWx::operator<<=(int shift)
+{
+ if (shift != 0)
{
- m_hi = m_lo << (shift - 32);
- m_lo = 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
{
- if (shift == 0)
- return *this;
+ wxLongLongWx ll(*this);
+ ll >>= shift;
- if (shift < 32)
- return wxLongLongWx(m_hi >> shift,
- (m_lo >> shift) | (m_hi << (32 - shift)));
- else
- return wxLongLongWx((m_hi < 0 ? -1l : 0),
- m_hi >> (shift - 32));
+ return ll;
}
-wxLongLongWx& wxLongLongWx::operator>>=(int shift)
+wxULongLongWx wxULongLongWx::operator>>(int shift) const
{
- if (shift == 0)
- return *this;
+ wxULongLongWx ll(*this);
+ ll >>= shift;
+
+ return ll;
+}
- if (shift < 32)
+wxLongLongWx& wxLongLongWx::operator>>=(int shift)
+{
+ if (shift != 0)
{
- m_lo >>= shift;
- m_lo |= m_hi << (32 - shift);
- m_hi >>= shift;
+ if (shift < 32)
+ {
+ m_lo >>= shift;
+ m_lo |= m_hi << (32 - shift);
+ m_hi >>= shift;
+ }
+ else
+ {
+ m_lo = m_hi >> (shift - 32);
+ m_hi = (m_hi < 0 ? -1L : 0);
+ }
}
- else
+
+#ifdef wxLONGLONG_TEST_MODE
+ m_ll >>= shift;
+
+ Check();
+#endif // wxLONGLONG_TEST_MODE
+
+ return *this;
+}
+
+wxULongLongWx& wxULongLongWx::operator>>=(int shift)
+{
+ if (shift != 0)
{
- m_lo = m_hi >> (shift - 32);
- m_hi = (m_hi < 0 ? -1L : 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 temp;
+ wxLongLongWx res(*this);
+ res += ll;
- temp.m_lo = m_lo + ll.m_lo;
- temp.m_hi = m_hi + ll.m_hi;
- if ((temp.m_lo < m_lo) || (temp.m_lo < ll.m_lo))
- temp.m_hi++;
+ return res;
+}
- return temp;
+wxULongLongWx wxULongLongWx::operator+(const wxULongLongWx& ll) const
+{
+ wxULongLongWx res(*this);
+ res += ll;
+
+ return res;
}
wxLongLongWx wxLongLongWx::operator+(long l) const
{
- wxLongLongWx temp;
-
- temp.m_lo = m_lo + l;
+ wxLongLongWx res(*this);
+ res += l;
- if (l < 0)
- temp.m_hi += -1l;
+ return res;
+}
- if ((temp.m_lo < m_lo) || (temp.m_lo < (unsigned long)l))
- temp.m_hi++;
+wxULongLongWx wxULongLongWx::operator+(unsigned long l) const
+{
+ wxULongLongWx res(*this);
+ res += l;
- return temp;
+ return res;
}
wxLongLongWx& wxLongLongWx::operator+=(const wxLongLongWx& ll)
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;
+}
+
+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;
}
if ((m_lo < previous) || (m_lo < (unsigned long)l))
m_hi++;
+#ifdef wxLONGLONG_TEST_MODE
+ m_ll += l;
+
+ Check();
+#endif // wxLONGLONG_TEST_MODE
+
+ 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;
}
if (m_lo == 0)
m_hi++;
+#ifdef wxLONGLONG_TEST_MODE
+ m_ll++;
+
+ Check();
+#endif // wxLONGLONG_TEST_MODE
+
return *this;
}
-// post increment
-wxLongLongWx& wxLongLongWx::operator++(int)
+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
{
- wxLongLongWx temp(~m_hi, ~m_lo);
+ wxLongLongWx res(*this);
+ res.Negate();
- temp.m_lo++;
- if (temp.m_lo == 0)
- temp.m_hi++;
+ return res;
+}
- return temp;
+wxLongLongWx& wxLongLongWx::Negate()
+{
+ m_hi = ~m_hi;
+ m_lo = ~m_lo;
+
+ m_lo++;
+ if ( m_lo == 0 )
+ m_hi++;
+
+#ifdef wxLONGLONG_TEST_MODE
+ m_ll = -m_ll;
+
+ Check();
+#endif // wxLONGLONG_TEST_MODE
+
+ return *this;
}
// subtraction
wxLongLongWx wxLongLongWx::operator-(const wxLongLongWx& ll) const
{
- wxLongLongWx temp;
+ wxLongLongWx res(*this);
+ res -= ll;
+
+ return res;
+}
- temp.m_lo = m_lo - ll.m_lo;
- temp.m_hi = m_hi - ll.m_hi;
+wxLongLongWx wxULongLongWx::operator-(const wxULongLongWx& ll) const
+{
+ wxASSERT(m_hi <= LONG_MAX );
+ wxASSERT(ll.m_hi <= LONG_MAX );
- if (m_lo < ll.m_lo)
- temp.m_hi--;
+ wxLongLongWx res( (long)m_hi , m_lo );
+ wxLongLongWx op( (long)ll.m_hi , ll.m_lo );
+ res -= op;
- return temp;
+ return res;
}
wxLongLongWx& wxLongLongWx::operator-=(const wxLongLongWx& ll)
if (previous < ll.m_lo)
m_hi--;
- return *this;;
+#ifdef wxLONGLONG_TEST_MODE
+ m_ll -= ll.m_ll;
+
+ Check();
+#endif // wxLONGLONG_TEST_MODE
+
+ 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
if (m_lo == 0xFFFFFFFF)
m_hi--;
+#ifdef wxLONGLONG_TEST_MODE
+ m_ll--;
+
+ Check();
+#endif // wxLONGLONG_TEST_MODE
+
return *this;
}
-// post decrement
-wxLongLongWx& wxLongLongWx::operator--(int)
+wxULongLongWx& wxULongLongWx::operator--()
{
m_lo--;
if (m_lo == 0xFFFFFFFF)
m_hi--;
+#ifdef wxLONGLONG_TEST_MODE
+ m_ll--;
+
+ Check();
+#endif // wxLONGLONG_TEST_MODE
+
return *this;
}
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;
+}
+
+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;
}
// bitwise operators
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;
m_hi &= ll.m_hi;
+#ifdef wxLONGLONG_TEST_MODE
+ m_ll &= ll.m_ll;
+
+ Check();
+#endif // wxLONGLONG_TEST_MODE
+
+ 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;
}
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;
+}
+
+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;
}
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;
+}
+
+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;
}
return wxLongLongWx(~m_hi, ~m_lo);
}
+wxULongLongWx wxULongLongWx::operator~() const
+{
+ return wxULongLongWx(~m_hi, ~m_lo);
+}
+
// multiplication
wxLongLongWx wxLongLongWx::operator*(const wxLongLongWx& ll) const
+{
+ wxLongLongWx res(*this);
+ res *= ll;
+
+ 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);
wxLongLongWx q(ll.m_hi, ll.m_lo);
- wxLongLongWx p;
- int counter = 0;
+ m_hi = m_lo = 0;
+
+#ifdef wxLONGLONG_TEST_MODE
+ wxLongLong_t llOld = m_ll;
+ m_ll = 0;
+#endif // wxLONGLONG_TEST_MODE
+
+ int counter = 0;
do
{
if ((q.m_lo & 1) != 0)
- p += t;
+ *this += t;
q >>= 1;
t <<= 1;
counter++;
- }
- while ((counter < 64) && ((q.m_hi != 0) || (q.m_lo != 0)));
- return p;
+ }
+ 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;
}
-wxLongLongWx& wxLongLongWx::operator*=(const wxLongLongWx& ll)
+wxULongLongWx& wxULongLongWx::operator*=(const wxULongLongWx& ll)
{
- wxLongLongWx t(m_hi, m_lo);
- wxLongLongWx q(ll.m_hi, ll.m_lo);
- int counter = 0;
+ 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;
+ *this += t;
q >>= 1;
t <<= 1;
counter++;
- }
- while ((counter < 64) && ((q.m_hi != 0) || (q.m_lo != 0)));
+ }
+ 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))
{
// 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.
+ // all responsibility for using this code.
// init everything
- wxLongLongWx dividend = *this,
- divisor = divisorIn;
+ wxULongLongWx dividend, divisor, remainder;
quotient = 0l;
remainder = 0l;
- // check for some particular cases
- if ( divisor > dividend )
- {
- remainder = dividend;
-
- return;
- }
-
- if ( divisor == dividend )
- {
- quotient = 1l;
-
- return;
- }
-
// always do unsigned division and adjust the signs later: in C integer
// division, the sign of the remainder is the same as the sign of the
// dividend, while the sign of the quotient is the product of the signs of
// 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;
}
- // here: dividend > divisor and both are positibe: 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 )
+ // check for some particular cases
+ if ( divisor > dividend )
{
- remainder <<= 1;
- if ( IS_MSB_SET(dividend) )
- {
- remainder |= 1;
- }
-
- d = dividend;
- dividend <<= 1;
-
- nBits--;
+ remainder = dividend;
}
-
- // undo the last loop iteration
- dividend = d;
- remainder >>= 1;
- nBits++;
-
- for ( size_t i = 0; i < nBits; i++ )
+ else if ( divisor == dividend )
+ {
+ quotient = 1l;
+ }
+ else
{
- remainder <<= 1;
- if ( IS_MSB_SET(dividend) )
+ // here: dividend > divisor and both are positive: do unsigned division
+ size_t nBits = 64u;
+ wxLongLongWx d;
+
+ while ( remainder < divisor )
{
- remainder |= 1;
+ remainder <<= 1;
+ if ( IS_MSB_SET(dividend) )
+ {
+ remainder |= 1;
+ }
+
+ d = dividend;
+ dividend <<= 1;
+
+ nBits--;
}
- wxLongLongWx t = remainder - divisor;
- dividend <<= 1;
- quotient <<= 1;
- if ( !IS_MSB_SET(t) )
- {
- quotient |= 1;
+ // undo the last loop iteration
+ dividend = d;
+ remainder >>= 1;
+ nBits++;
- remainder = t;
+ for ( size_t i = 0; i < nBits; i++ )
+ {
+ remainder <<= 1;
+ if ( IS_MSB_SET(dividend) )
+ {
+ remainder |= 1;
+ }
+
+ wxLongLongWx t = remainder - divisor;
+ dividend <<= 1;
+ quotient <<= 1;
+ if ( !IS_MSB_SET(t) )
+ {
+ quotient |= 1;
+
+ remainder = t;
+ }
}
}
+ remainderIO = remainder;
+
// adjust signs
if ( negRemainder )
{
- remainder = -remainder;
+ remainderIO = -remainderIO;
}
if ( negQuotient )
}
}
+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;
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;
Divide(ll, quotient, remainder);
- return *this = quotient;
+ *this = quotient;
+
+ 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
return remainder;
}
+wxULongLongWx wxULongLongWx::operator%(const wxULongLongWx& ll) const
+{
+ wxULongLongWx quotient, remainder;
+
+ Divide(ll, quotient, remainder);
+
+ return remainder;
+}
+
// ----------------------------------------------------------------------------
// misc
// ----------------------------------------------------------------------------
{
static unsigned char temp[8];
- temp[0] = (m_hi >> 24) & 0xFF;
- temp[1] = (m_hi >> 16) & 0xFF;
- temp[2] = (m_hi >> 8) & 0xFF;
- temp[3] = (m_hi >> 0) & 0xFF;
- temp[4] = (m_lo >> 24) & 0xFF;
- temp[5] = (m_lo >> 16) & 0xFF;
- temp[6] = (m_lo >> 8) & 0xFF;
- temp[7] = (m_lo >> 0) & 0xFF;
+ 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;
}
-#if wxUSE_STD_IOSTREAM
-
-// input/output
-ostream& operator<< (ostream& o, const wxLongLongWx& ll)
+void *wxULongLongWx::asArray(void) const
{
- char result[65];
+ 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);
- memset(result, 'A', 64);
+ return temp;
+}
- result[64] = '\0';
+#endif // wxUSE_LONGLONG_WX
+
+#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; \
+ }
- for (int i = 0; i < 32; i++)
- {
- result[31 - i] = (char) ('0' + (int) ((ll.m_hi >> i) & 1));
- result[63 - i] = (char) ('0' + (int) ((ll.m_lo >> i) & 1));
+#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; \
}
- return o << result;
+#if wxUSE_LONGLONG_NATIVE
+ 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)
+{
+ return o << ll.ToString();
}
+
#endif // wxUSE_STD_IOSTREAM
-#endif // wxUSE_LONGLONG_NATIVE
+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();
+}
#endif // wxUSE_LONGLONG
projects / wxWidgets.git / blobdiff