X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/de85a884d77ad5a29b418b343d4d3cc99c127b5e..ecd20d4a916884895dcd8873a9f1156e34f4ac89:/src/common/longlong.cpp diff --git a/src/common/longlong.cpp b/src/common/longlong.cpp index d0cda3912d..80fc379374 100644 --- a/src/common/longlong.cpp +++ b/src/common/longlong.cpp @@ -2,20 +2,20 @@ // Name: wx/longlong.cpp // Purpose: implementation of wxLongLongNative // Author: Jeffrey C. Ollie , 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 -// Licence: wxWindows license +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // ============================================================================ // headers // ============================================================================ -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation "longlong.h" #endif @@ -27,6 +27,7 @@ #if wxUSE_LONGLONG #include "wx/longlong.h" +#include "wx/math.h" // for fabs() #if defined(__MWERKS__) && defined(__WXMSW__) #include // for memset() @@ -34,8 +35,6 @@ #include // for memset() #endif -#include // for fabs() - // ============================================================================ // implementation // ============================================================================ @@ -50,18 +49,53 @@ 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; +} + +void *wxULongLongNative::asArray() const +{ + static unsigned char temp[8]; + + 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) +{ + // 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 + #endif // wxUSE_LONGLONG_NATIVE // ============================================================================ @@ -106,6 +140,14 @@ 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) @@ -132,6 +174,32 @@ 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); @@ -140,6 +208,14 @@ 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) @@ -166,6 +242,32 @@ 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); @@ -174,6 +276,14 @@ 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); @@ -182,6 +292,14 @@ 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; @@ -201,6 +319,25 @@ 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; @@ -221,6 +358,24 @@ 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++() { @@ -237,6 +392,21 @@ 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 { @@ -274,6 +444,18 @@ 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; @@ -293,6 +475,25 @@ 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--() { @@ -309,26 +510,61 @@ 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 @@ -338,16 +574,31 @@ 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; @@ -362,6 +613,20 @@ 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; @@ -376,6 +641,20 @@ 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; @@ -390,11 +669,30 @@ 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 @@ -405,6 +703,14 @@ 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); @@ -437,6 +743,38 @@ 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 + unsigned wxLongLong_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 void wxLongLongWx::Divide(const wxLongLongWx& divisorIn, @@ -480,7 +818,7 @@ void wxLongLongWx::Divide(const wxLongLongWx& divisorIn, // // with 0 <= abs(remainder) < abs(divisor) bool negRemainder = dividend.m_hi < 0; - bool negQuotient = FALSE; // assume positive + bool negQuotient = false; // assume positive if ( dividend.m_hi < 0 ) { negQuotient = !negQuotient; @@ -503,7 +841,7 @@ 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; @@ -560,6 +898,95 @@ 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; + + #define IS_MSB_SET(ll) ((ll.m_hi) & (1 << (8*sizeof(long) - 1))) + + 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; @@ -569,6 +996,15 @@ 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; @@ -580,6 +1016,17 @@ 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; @@ -589,6 +1036,15 @@ 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 // ---------------------------------------------------------------------------- @@ -610,53 +1066,112 @@ void *wxLongLongWx::asArray(void) const return temp; } -#endif // wxUSE_LONGLONG_WX - -wxString -#if wxUSE_LONGLONG_NATIVE -wxLongLongNative::ToString() const -#else -wxLongLongWx::ToString() const -#endif +void *wxULongLongWx::asArray(void) const { - // TODO: this is awfully inefficient, anything better? - wxString result; + 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); - wxLongLong ll = *this; + return temp; +} - bool neg; - if ( ll < 0 ) - { - ll.Negate(); - neg = TRUE; - } - else - { - neg = FALSE; +#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; \ + if ( ll < 0 ) \ + { \ + ll.Negate(); \ + neg = true; \ + } \ + else \ + { \ + neg = false; \ + } \ + \ + while ( ll != 0 ) \ + { \ + result.Prepend((wxChar)(_T('0') + (ll % 10).ToLong())); \ + ll /= 10; \ + } \ + \ + if ( result.empty() ) \ + result = _T('0'); \ + else if ( neg ) \ + result.Prepend(_T('-')); \ + \ + return result; \ } - while ( ll != 0 ) - { - result.Prepend((wxChar)(_T('0') + (ll % 10).ToLong())); - ll /= 10; +#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 ( result.empty() ) - result = _T('0'); - else if ( neg ) - result.Prepend(_T('-')); +#if wxUSE_LONGLONG_NATIVE + LL_TO_STRING(wxLongLongNative) + ULL_TO_STRING(wxULongLongNative) +#endif - return result; -} +#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 +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