// 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: $Id$
#include "wx/defs.h"
#include "wx/wxchar.h"
-#include "wx/debug.h"
#include <limits.h> // for LONG_MAX
-// #define wxUSE_LONGLONG_WX 1 -- for testing (VZ)
+// 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
#define wxLongLongIsLong
#elif (defined(__VISUALC__) && defined(__WIN32__)) || defined( __VMS__ )
#define wxLongLong_t __int64
-#elif defined(__BORLANDC__) && (__BORLANDC__ >= 0x530)
+#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
+#elif defined(__VISAGECPP__) && __IBMCPP__ >= 400
+ #define wxLongLong_t long long
#else // no native long long type
- // we don't give warnings for the compilers we know about that they don't
- // have any 64 bit integer type
- #if !defined(__VISAGECPP__) && \
- !defined(__VISUALC__) && \
- !defined(__BORLANDC__
- #warning "Your compiler does not appear to support 64 bit integers, "\
- "using emulation class instead."
- #endif // known compilers without long long
-
+ // 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
// to disable automatic testing (useful for the test program which defines
// both classes) but by default we only use one class
#if (defined(wxUSE_LONGLONG_WX) && wxUSE_LONGLONG_WX) || !defined(wxLongLong_t)
- #undef wxUSE_LONGLONG_NATIVE
- #define wxUSE_LONGLONG_NATIVE 0
+ // 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
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
// get absolute value
wxLongLongWx Abs() const { return wxLongLongWx(*this).Abs(); }
- wxLongLongWx& Abs() { if ( m_hi < 0 ) m_hi = -m_hi; return *this; }
+ 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,
+ wxASSERT_MSG( (m_hi == 0l) || (m_hi == -1l),
_T("wxLongLong to long conversion loss of precision") );
return (long)m_lo;
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
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);
friend ostream& operator<<(ostream&, const wxLongLongWx&);
#endif // wxUSE_STD_IOSTREAM
- void *asArray(void) const;
+ 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
projects / wxWidgets.git / blobdiff