// Purpose: declaration of wxLongLong class - best implementation of a 64
// bit integer for the current platform.
// Author: Jeffrey C. Ollie <jeff@ollie.clive.ia.us>, 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: $Id$
#pragma interface "longlong.h"
#endif
+#include "wx/defs.h"
+#include "wx/wxchar.h"
+
+#include <limits.h> // 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
// ----------------------------------------------------------------------------
#if defined(SIZEOF_LONG) && (SIZEOF_LONG == 8)
#define wxLongLong_t long
#define wxLongLongIsLong
-#elif defined(__VISUALC__)
+#elif (defined(__VISUALC__) && defined(__WIN32__)) || defined( __VMS__ )
+ #define wxLongLong_t __int64
+#elif defined(__BORLANDC__) && defined(__WIN32__) && (__BORLANDC__ >= 0x520)
#define wxLongLong_t __int64
#elif defined(__GNUG__)
#define wxLongLong_t long long
#error "The 64 bit integer support in CodeWarrior has been disabled."
#error "See the documentation on the 'longlong' pragma."
#endif
-#else
- #warning "Your compiler does not appear to support 64 bit integers, "\
- "using emulation class instead."
+#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 - unless the compiler is
+ // seriously broken as Watcom C++ seems to be...
+#ifndef __WATCOMC__
+ #pragma warning "Your compiler does not appear to support 64 bit "\
+ "integers, using emulation class instead."
+#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;
typedef wxLongLongWx wxLongLong;
#else
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
{ 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
wxLongLong_t GetValue() const { return m_ll; }
+ // convert to long with range checking in the debug mode (only!)
+ long ToLong() const
+ {
+ wxASSERT_MSG( (m_ll >= LONG_MIN) && (m_ll <= LONG_MAX),
+ _T("wxLongLong to long conversion loss of precision") );
+
+ return (long)m_ll;
+ }
+
// don't provide implicit conversion to wxLongLong_t or we will have an
// ambiguity for all arithmetic operations
//operator wxLongLong_t() const { return m_ll; }
// 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&);
+#endif
private:
wxLongLong_t m_ll;
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
// 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
// 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;
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;
wxLongLongWx& operator--();
// post decrement operator
- wxLongLongWx& operator--(int);
+ wxLongLongWx& operator--(int) { return --(*this); }
// shifts
// left shift
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;
// input/output
+#if wxUSE_STD_IOSTREAM
friend ostream& operator<<(ostream&, const wxLongLongWx&);
+#endif // wxUSE_STD_IOSTREAM
+
+ void *asArray() const;
private:
// long is at least 32 bits, so represent our 64bit number as 2 longs
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 WXDLLEXPORT operator<(long l, const wxLongLong& ll) { return ll > l; }
+inline bool WXDLLEXPORT operator>(long l, const wxLongLong& ll) { return ll > l; }
+inline bool WXDLLEXPORT operator<=(long l, const wxLongLong& ll) { return ll > l; }
+inline bool WXDLLEXPORT operator>=(long l, const wxLongLong& ll) { return ll > l; }
+inline bool WXDLLEXPORT operator==(long l, const wxLongLong& ll) { return ll > l; }
+inline bool WXDLLEXPORT operator!=(long l, const wxLongLong& ll) { return ll > l; }
+
+inline wxLongLong WXDLLEXPORT operator+(long l, const wxLongLong& ll) { return ll + l; }
+inline wxLongLong WXDLLEXPORT operator-(long l, const wxLongLong& ll) { return ll - l; }
+
#endif // _WX_LONGLONG_H
projects / wxWidgets.git / blobdiff