X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b76b015ed9231ffe128ddba9fb35e37b4be9764d..c51deffc32ff80f4ed13a1095bbf2ff44de89505:/include/wx/longlong.h

diff --git a/include/wx/longlong.h b/include/wx/longlong.h
index cedac4f92b..1e5ee03100 100644
--- a/include/wx/longlong.h
+++ b/include/wx/longlong.h
@@ -19,16 +19,23 @@
     #pragma interface "longlong.h"
 #endif
 
+#include "wx/defs.h"
+#include "wx/wxchar.h"
+#include "wx/debug.h"
+
+#include <limits.h>     // for LONG_MAX
+
 // ----------------------------------------------------------------------------
 // decide upon which class we will use
 // ----------------------------------------------------------------------------
 
 // to avoid compilation problems on 64bit machines with ambiguous method calls
-// we will need this
+// we will need to define this
 #undef wxLongLongIsLong
 
 // NB: we #define and not typedef wxLongLong_t because we want to be able to
-//     use 'unsigned wxLongLong_t' as well
+//     use 'unsigned wxLongLong_t' as well and because we use "#ifdef
+//     wxLongLong_t" below
 #if defined(SIZEOF_LONG) && (SIZEOF_LONG == 8)
     #define wxLongLong_t long
     #define wxLongLongIsLong
@@ -98,7 +105,7 @@ public:
         m_ll |= (wxLongLong_t) lo;
     }
 
-    // default copy ctor is ok in both cases
+    // default copy ctor is ok
 
     // no dtor
 
@@ -112,10 +119,10 @@ public:
     // accessors
         // get high part
     long GetHi() const
-        { return (long)((m_ll & 0xFFFFFFFF00000000l) >> 32); }
+        { return (long)(m_ll >> 32); }
         // get low part
     unsigned long GetLo() const
-        { return (unsigned long) (m_ll & 0x00000000FFFFFFFFl); }
+        { return (unsigned long)m_ll; }
 
         // get absolute value
     wxLongLongNative& Abs() { if ( m_ll < 0 ) m_ll = -m_ll; return *this; }
@@ -123,6 +130,17 @@ public:
         // 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; }
 
     // operations
@@ -200,8 +218,12 @@ public:
     // multiplication/division
     wxLongLongNative operator*(const wxLongLongNative& ll) const
         { return wxLongLongNative(m_ll * ll.m_ll); }
+    wxLongLongNative operator*(long l) const
+        { return wxLongLongNative(m_ll * l); }
     wxLongLongNative& operator*=(const wxLongLongNative& ll)
         { m_ll *= ll.m_ll; return *this; }
+    wxLongLongNative& operator*=(long l)
+        { m_ll *= l; return *this; }
 
     wxLongLongNative operator/(const wxLongLongNative& ll) const
         { return wxLongLongNative(m_ll / ll.m_ll); }
@@ -209,6 +231,8 @@ public:
         { return wxLongLongNative(m_ll / l); }
     wxLongLongNative& operator/=(const wxLongLongNative& ll)
         { m_ll /= ll.m_ll; return *this; }
+    wxLongLongNative& operator/=(long l)
+        { m_ll /= l; return *this; }
 
     wxLongLongNative operator%(const wxLongLongNative& ll) const
         { return wxLongLongNative(m_ll % ll.m_ll); }
@@ -245,8 +269,10 @@ public:
         // 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;
@@ -347,8 +373,10 @@ public:
                 wxLongLongWx& quotient,
                 wxLongLongWx& remainder) const;
 
+#if wxUSE_STD_IOSTREAM
     // input/output
     friend ostream& operator<<(ostream&, const wxLongLongWx&);
+#endif // wxUSE_STD_IOSTREAM
 
 private:
     // long is at least 32 bits, so represent our 64bit number as 2 longs