X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/08f6ac314ae712e2bc8fa59cf688e6bcff76181f..78340847c912f28ddd156b7d15a4a26cdd11b9eb:/include/wx/longlong.h?ds=sidebyside diff --git a/include/wx/longlong.h b/include/wx/longlong.h index 2731af5ae5..07d8ca4342 100644 --- a/include/wx/longlong.h +++ b/include/wx/longlong.h @@ -3,8 +3,6 @@ // Purpose: declaration of wxLongLong class - best implementation of a 64 // bit integer for the current platform. // Author: Jeffrey C. Ollie , Vadim Zeitlin -// Remarks: this class is not public in wxWindows 2.0! It is intentionally -// not documented and is for private use only. // Modified by: // Created: 10.02.99 // RCS-ID: $Id$ @@ -20,11 +18,22 @@ #endif #include "wx/defs.h" -#include "wx/wxchar.h" -#include "wx/debug.h" +#include "wx/string.h" #include // for LONG_MAX +// define this to compile wxLongLongWx in "test" mode: the results of all +// calculations will be compared with the real results taken from +// wxLongLongNative -- this is extremely useful to find the bugs in +// wxLongLongWx class! + +// #define wxLONGLONG_TEST_MODE + +#ifdef wxLONGLONG_TEST_MODE + #define wxUSE_LONGLONG_WX 1 + #define wxUSE_LONGLONG_NATIVE 1 +#endif // wxLONGLONG_TEST_MODE + // ---------------------------------------------------------------------------- // decide upon which class we will use // ---------------------------------------------------------------------------- @@ -36,12 +45,19 @@ // NB: we #define and not typedef wxLongLong_t because we want to be able to // use 'unsigned wxLongLong_t' as well and because we use "#ifdef // wxLongLong_t" below + +// first check for generic cases which are long on 64bit machine and "long +// long", then check for specific compilers #if defined(SIZEOF_LONG) && (SIZEOF_LONG == 8) #define wxLongLong_t long #define wxLongLongIsLong -#elif defined(__VISUALC__) || defined( __VMS__ ) +#elif (defined(__VISUALC__) && defined(__WIN32__)) || defined( __VMS__ ) #define wxLongLong_t __int64 -#elif defined(__GNUG__) +#elif defined(__BORLANDC__) && defined(__WIN32__) && (__BORLANDC__ >= 0x520) + #define wxLongLong_t __int64 +#elif defined(SIZEOF_LONG_LONG) && SIZEOF_LONG_LONG >= 8 + #define wxLongLong_t long long +#elif defined(__MINGW32__) || defined(__CYGWIN__) #define wxLongLong_t long long #elif defined(__MWERKS__) #if __option(longlong) @@ -50,23 +66,40 @@ #error "The 64 bit integer support in CodeWarrior has been disabled." #error "See the documentation on the 'longlong' pragma." #endif -#else - #if !defined(__VISAGECPP__) - // Visualage does not support this pragma - #warning "Your compiler does not appear to support 64 bit integers, "\ - "using emulation class instead." - #endif +#elif defined(__VISAGECPP__) && __IBMCPP__ >= 400 + #define wxLongLong_t long long +#else // no native long long type + // both warning and pragma warning are not portable, but at least an + // unknown pragma should never be an error - except that, actually, some + // broken compilers don't like it, so we have to disable it in this case + // +#if !(defined(__WATCOMC__) || defined(__VISAGECPP__)) + #pragma warning "Your compiler does not appear to support 64 bit "\ + "integers, using emulation class instead.\n" \ + "Please report your compiler version to " \ + "wx-dev@lists.wxwindows.org!" +#endif + #define wxUSE_LONGLONG_WX 1 #endif // compiler // the user may predefine wxUSE_LONGLONG_NATIVE and/or wxUSE_LONGLONG_NATIVE // to disable automatic testing (useful for the test program which defines // both classes) but by default we only use one class -#ifndef wxLongLong_t - #undef wxUSE_LONGLONG_NATIVE - #define wxUSE_LONGLONG_NATIVE 0 +#if (defined(wxUSE_LONGLONG_WX) && wxUSE_LONGLONG_WX) || !defined(wxLongLong_t) + // don't use both classes unless wxUSE_LONGLONG_NATIVE was explicitly set: + // this is useful in test programs and only there + #ifndef wxUSE_LONGLONG_NATIVE + #define wxUSE_LONGLONG_NATIVE 0 + #endif + class WXDLLEXPORT wxLongLongWx; +#if defined(__VISUALC__) && !defined(__WIN32__) + #define wxLongLong wxLongLongWx +#else typedef wxLongLongWx wxLongLong; +#endif + #else // if nothing is defined, use native implementation by default, of course #ifndef wxUSE_LONGLONG_NATIVE @@ -117,6 +150,12 @@ public: wxLongLongNative& operator=(wxLongLong_t ll) { m_ll = ll; return *this; } + // from double: this one has an explicit name because otherwise we + // would have ambiguity with "ll = int" and also because we don't want + // to have implicit conversions between doubles and wxLongLongs + wxLongLongNative& Assign(double d) + { m_ll = (wxLongLong_t)d; return *this; } + // assignment operators from wxLongLongNative is ok // accessors @@ -128,6 +167,7 @@ public: { return (unsigned long)m_ll; } // get absolute value + wxLongLongNative Abs() const { return wxLongLongNative(*this).Abs(); } wxLongLongNative& Abs() { if ( m_ll < 0 ) m_ll = -m_ll; return *this; } // convert to native long long @@ -169,6 +209,7 @@ public: // negation operator wxLongLongNative operator-() const { return wxLongLongNative(-m_ll); } + wxLongLongNative& Negate() { m_ll = -m_ll; return *this; } // subtraction wxLongLongNative operator-(const wxLongLongNative& ll) const @@ -269,12 +310,16 @@ public: { return m_ll >= l; } // miscellaneous + + // return the string representation of this number + wxString ToString() const; + // conversion to byte array: returns a pointer to static buffer! void *asArray() const; #if wxUSE_STD_IOSTREAM // input/output - friend ostream& operator<<(ostream&, const wxLongLongNative&); + friend wxSTD ostream& operator<<(wxSTD ostream&, const wxLongLongNative&); #endif private: @@ -290,13 +335,32 @@ class WXDLLEXPORT wxLongLongWx public: // ctors // default ctor initializes to 0 - wxLongLongWx() { m_lo = m_hi = 0; } + wxLongLongWx() + { + m_lo = m_hi = 0; + +#ifdef wxLONGLONG_TEST_MODE + m_ll = 0; + + Check(); +#endif // wxLONGLONG_TEST_MODE + } // from long - wxLongLongWx(long l) - { m_lo = l; m_hi = (l < 0 ? -1l : 0l); } + wxLongLongWx(long l) { *this = l; } // from 2 longs wxLongLongWx(long hi, unsigned long lo) - { m_hi = hi; m_lo = 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 @@ -305,7 +369,20 @@ public: // assignment operators // from long wxLongLongWx& operator=(long l) - { m_lo = l; m_hi = (l < 0 ? -1l : 0l); return *this; } + { + m_lo = l; + m_hi = (l < 0 ? -1l : 0l); + +#ifdef wxLONGLONG_TEST_MODE + m_ll = l; + + Check(); +#endif // wxLONGLONG_TEST_MODE + + return *this; + } + // from double + wxLongLongWx& Assign(double d); // can't have assignment operator from 2 longs // accessors @@ -314,6 +391,32 @@ public: // get low part unsigned long GetLo() const { return m_lo; } + // get absolute value + wxLongLongWx Abs() const { return wxLongLongWx(*this).Abs(); } + wxLongLongWx& Abs() + { + if ( m_hi < 0 ) + m_hi = -m_hi; + +#ifdef wxLONGLONG_TEST_MODE + if ( m_ll < 0 ) + m_ll = -m_ll; + + Check(); +#endif // wxLONGLONG_TEST_MODE + + return *this; + } + + // convert to long with range checking in the debug mode (only!) + long ToLong() const + { + wxASSERT_MSG( (m_hi == 0l) || (m_hi == -1l), + _T("wxLongLong to long conversion loss of precision") ); + + return (long)m_lo; + } + // operations // addition wxLongLongWx operator+(const wxLongLongWx& ll) const; @@ -325,10 +428,11 @@ public: wxLongLongWx& operator++(); // post increment operator - wxLongLongWx& operator++(int); + wxLongLongWx& operator++(int) { return ++(*this); } // negation operator wxLongLongWx operator-() const; + wxLongLongWx& Negate(); // subraction wxLongLongWx operator-(const wxLongLongWx& ll) const; @@ -338,7 +442,7 @@ public: wxLongLongWx& operator--(); // post decrement operator - wxLongLongWx& operator--(int); + wxLongLongWx& operator--(int) { return --(*this); } // shifts // left shift @@ -359,26 +463,51 @@ public: wxLongLongWx operator~() const; // comparison - bool operator==(const wxLongLongWx& ll) const; - bool operator!=(const wxLongLongWx& ll) const; + 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; - 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); - void *asArray(void) const; // 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; -#if wxUSE_STD_IOSTREAM // input/output - friend ostream& operator<<(ostream&, const wxLongLongWx&); + + // 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: @@ -386,8 +515,31 @@ private: 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 }; #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 ll - l; } + #endif // _WX_LONGLONG_H