X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/dd107c50be43e8d4dbdba20df162faf119a3781c..4a9dba0e561d2485d9235eab7b51aac8729f1b10:/src/common/longlong.cpp diff --git a/src/common/longlong.cpp b/src/common/longlong.cpp index 129af17c8f..9265a4e803 100644 --- a/src/common/longlong.cpp +++ b/src/common/longlong.cpp @@ -8,7 +8,7 @@ // Created: 10.02.99 // RCS-ID: $Id$ // Copyright: (c) 1998 Vadim Zeitlin -// Licence: wxWindows license +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // ============================================================================ @@ -28,7 +28,12 @@ #if wxUSE_LONGLONG #include "wx/longlong.h" +#if defined(__MWERKS__) && defined(__WXMSW__) +#include // for memset() +#else #include // for memset() +#endif + #include // for fabs() // ============================================================================ @@ -57,27 +62,22 @@ void *wxLongLongNative::asArray() const return temp; } -#if wxUSE_STD_IOSTREAM - -// input/output -wxSTD ostream& operator<< (wxSTD ostream& o, const wxLongLongNative& ll) +void *wxULongLongNative::asArray() const { - char result[65]; - - wxSTD memset(result, 'A', 64); - - result[64] = '\0'; + static unsigned char temp[8]; - for (int i = 0; i < 64; i++) - { - result[63 - i] = '0' + (char) ((ll.GetValue() >> i) & 1); - } + 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; - return o << result; + return temp; } -#endif // wxUSE_STD_IOSTREAM - #endif // wxUSE_LONGLONG_NATIVE // ============================================================================ @@ -122,6 +122,14 @@ 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) @@ -148,6 +156,32 @@ 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); @@ -156,6 +190,14 @@ 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) @@ -182,6 +224,32 @@ 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); @@ -190,6 +258,14 @@ 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); @@ -198,6 +274,14 @@ 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; @@ -217,6 +301,25 @@ 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; @@ -237,6 +340,24 @@ 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++() { @@ -253,6 +374,21 @@ 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 { @@ -290,6 +426,14 @@ 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) { unsigned long previous = m_lo; @@ -309,6 +453,25 @@ 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--() { @@ -325,6 +488,21 @@ 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 @@ -337,6 +515,16 @@ bool wxLongLongWx::operator<(const wxLongLongWx& ll) const 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; +} + bool wxLongLongWx::operator>(const wxLongLongWx& ll) const { if ( m_hi > ll.m_hi ) @@ -347,6 +535,16 @@ bool wxLongLongWx::operator>(const wxLongLongWx& ll) const 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 wxLongLongWx wxLongLongWx::operator&(const wxLongLongWx& ll) const @@ -354,16 +552,31 @@ 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; @@ -378,6 +591,20 @@ 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; @@ -392,6 +619,20 @@ 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; @@ -406,11 +647,30 @@ 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 @@ -421,6 +681,14 @@ 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); @@ -453,6 +721,38 @@ 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, @@ -478,7 +778,7 @@ void wxLongLongWx::Divide(const wxLongLongWx& divisorIn, // 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, @@ -576,6 +876,95 @@ 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; @@ -585,6 +974,15 @@ 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; @@ -592,7 +990,18 @@ wxLongLongWx& wxLongLongWx::operator/=(const wxLongLongWx& ll) Divide(ll, quotient, remainder); *this = quotient; - + + return *this; +} + +wxULongLongWx& wxULongLongWx::operator/=(const wxULongLongWx& ll) +{ + wxULongLongWx quotient, remainder; + + Divide(ll, quotient, remainder); + + *this = quotient; + return *this; } @@ -605,6 +1014,15 @@ 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 // ---------------------------------------------------------------------------- @@ -626,27 +1044,98 @@ void *wxLongLongWx::asArray(void) const return temp; } -#if wxUSE_STD_IOSTREAM +void *wxULongLongWx::asArray(void) const +{ + static unsigned char temp[8]; -// input/output -wxSTD ostream& operator<< (wxSTD ostream& o, const wxLongLongWx& ll) + 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 +#if wxUSE_LONGLONG_NATIVE +wxLongLongNative::ToString() const +#else +wxLongLongWx::ToString() const +#endif { - char result[65]; + // TODO: this is awfully inefficient, anything better? + wxString result; + + wxLongLong 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; +} - memset(result, 'A', 64); +wxString +#if wxUSE_LONGLONG_NATIVE +wxULongLongNative::ToString() const +#else +wxULongLongWx::ToString() const +#endif +{ + // TODO: this is awfully inefficient, anything better? + wxString result; - result[64] = '\0'; + wxULongLong ll = *this; - for (int i = 0; i < 32; i++) + while ( ll != 0 ) { - result[31 - i] = (char) ('0' + (int) ((ll.m_hi >> i) & 1)); - result[63 - i] = (char) ('0' + (int) ((ll.m_lo >> i) & 1)); + result.Prepend((wxChar)(_T('0') + (ll % 10).ToULong())); + ll /= 10; } - return o << result; + if ( result.empty() ) + result = _T('0'); + + return result; } -#endif // wxUSE_STD_IOSTREAM -#endif // wxUSE_LONGLONG_NATIVE +#if wxUSE_STD_IOSTREAM + +// input/output +wxSTD ostream& operator<< (wxSTD ostream& o, const wxLongLong& ll) +{ + return o << ll.ToString(); +} + +wxSTD ostream& operator<< (wxSTD ostream& o, const wxULongLong& ll) +{ + return o << ll.ToString(); +} + +#endif // wxUSE_STD_IOSTREAM #endif // wxUSE_LONGLONG