X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9a83f860948059b0273b5cc6d9e43fadad3ebfca..438959cca892a7651634cc3a7aad4819ac49b23c:/include/wx/longlong.h

diff --git a/include/wx/longlong.h b/include/wx/longlong.h
index 71cb62bd4a..19c580110e 100644
--- a/include/wx/longlong.h
+++ b/include/wx/longlong.h
@@ -404,15 +404,20 @@ public:
         // convert to ulong with range checking in debug mode (only!)
     unsigned long ToULong() const
     {
-        wxASSERT_MSG( m_ll <= LONG_MAX,
+        wxASSERT_MSG( m_ll <= ULONG_MAX,
                       wxT("wxULongLong to long conversion loss of precision") );
 
         return wx_truncate_cast(unsigned long, m_ll);
     }
 
         // convert to double
-#ifdef _MSC_VER
-    double ToDouble() const { return wx_truncate_cast(double, (__int64) m_ll); }
+        //
+        // For some completely obscure reasons compiling the cast below with
+        // VC6 in DLL builds only (!) results in "error C2520: conversion from
+        // unsigned __int64 to double not implemented, use signed __int64" so
+        // we must use a different version for that compiler.
+#ifdef __VISUALC6__
+    double ToDouble() const;
 #else
     double ToDouble() const { return wx_truncate_cast(double, m_ll); }
 #endif
@@ -1075,6 +1080,66 @@ WXDLLIMPEXP_BASE class wxTextInputStream &operator>>(class wxTextInputStream &st
 
 #endif
 
+// ----------------------------------------------------------------------------
+// Specialize numeric_limits<> for our long long wrapper classes.
+// ----------------------------------------------------------------------------
+
+#if wxUSE_LONGLONG_NATIVE
+
+// VC6 is known to not have __int64 specializations of numeric_limits<> in its
+// <limits> anyhow so don't bother including it, especially as it results in
+// tons of warnings because the standard header itself uses obsolete template
+// specialization syntax.
+#ifndef __VISUALC6__
+
+#include <limits>
+
+namespace std
+{
+
+#ifdef __clang__
+  // libstdc++ (used by Clang) uses struct for numeric_limits; unlike gcc, clang
+  // warns about this
+  template<> struct numeric_limits<wxLongLong>  : public numeric_limits<wxLongLong_t> {};
+  template<> struct numeric_limits<wxULongLong> : public numeric_limits<wxULongLong_t> {};
+#else
+  template<> class numeric_limits<wxLongLong>  : public numeric_limits<wxLongLong_t> {};
+  template<> class numeric_limits<wxULongLong> : public numeric_limits<wxULongLong_t> {};
+#endif
+
+} // namespace std
+
+#endif // !VC6
+
+#endif // wxUSE_LONGLONG_NATIVE
+
+// ----------------------------------------------------------------------------
+// Specialize wxArgNormalizer to allow using wxLongLong directly with wx pseudo
+// vararg functions.
+// ----------------------------------------------------------------------------
+
+// Notice that this must be done here and not in wx/strvararg.h itself because
+// we can't include wx/longlong.h from there as this header itself includes
+// wx/string.h which includes wx/strvararg.h too, so to avoid the circular
+// dependencies we can only do it here (or add another header just for this but
+// it doesn't seem necessary).
+#include "wx/strvararg.h"
+
+template<>
+struct WXDLLIMPEXP_BASE wxArgNormalizer<wxLongLong>
+{
+     wxArgNormalizer(wxLongLong value,
+                     const wxFormatString *fmt, unsigned index)
+         : m_value(value)
+     {
+         wxASSERT_ARG_TYPE( fmt, index, wxFormatString::Arg_LongLongInt );
+     }
+
+     wxLongLong_t get() const { return m_value.GetValue(); }
+
+     wxLongLong m_value;
+};
+
 #endif // wxUSE_LONGLONG
 
 #endif // _WX_LONGLONG_H