X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/23f826bdf98d9f1570248cb926e7b7f233ed44dd..a4535b9f391bbe8453f70784bc77a06f3426e858:/include/wx/math.h

diff --git a/include/wx/math.h b/include/wx/math.h
index e99b37a6d6..9d03f185d1 100644
--- a/include/wx/math.h
+++ b/include/wx/math.h
@@ -22,9 +22,9 @@
     #define M_PI 3.1415926535897932384626433832795
 #endif
 
-/* Scaling factors for various unit conversions */
+/* Scaling factors for various unit conversions: 1 inch = 2.54 cm */
 #ifndef METRIC_CONVERSION_CONSTANT
-    #define METRIC_CONVERSION_CONSTANT 0.0393700787
+    #define METRIC_CONVERSION_CONSTANT (1./254)
 #endif
 
 #ifndef mm2inches
@@ -105,13 +105,12 @@
 
     inline bool wxIsNullDouble(double x) { return wxIsSameDouble(x, 0.); }
 
-    #ifdef __VMS
-        //Missing definition in OpenVMS C++ header files.
-        double round(double __x);
-    #endif
     inline int wxRound(double x)
     {
-        #ifdef __VMS
+        wxASSERT_MSG( x > INT_MIN - 0.5 && x < INT_MAX + 0.5,
+                      _T("argument out of supported range") );
+
+        #if defined(HAVE_ROUND)
             return int(round(x));
         #else
             return (int)(x < 0 ? x - 0.5 : x + 0.5);