Set the value to the fractional part first, then add the integral part.

This *should* result in the highest possible resolution.

src/xpdev/genwrap.c

@@ -515,8 +515,8 @@ long double	DLLCALL	xp_timer(void)
 		ret /= ((long double)freq.HighPart*4294967296)+((long double)freq.LowPart);
 #else
 		/* In MSVC, a long double does NOT have 19 decimals of precision */
-		ret=((long long int)(tick.QuadPart/freq.QuadPart))
-				+(((long double)(tick.QuadPart%freq.QuadPart))/freq.QuadPart);
+		ret=(((long double)(tick.QuadPart%freq.QuadPart))/freq.QuadPart);
+		ret+=((long long int)(tick.QuadPart/freq.QuadPart))
 #endif
 	}
 	else {