# define bcopy(from, to, n) memcpy(to, from, n)
# if _MSC_VER >= 1200 // msvc++ 6.0 up to MSVC2013
+# if _MSC_VER < 1900
+# define snprintf _snprintf
+# define strdup _strdup
+# endif
# if _MSC_VER < 1800
# define isnan _isnan
-# define snprintf _snprintf
# endif
# if _MSC_VER < 1500
# define vsnprintf _vsnprintf
# pragma warning(disable: 4786) // identifier was truncated to '255' characters
# pragma warning(disable: 4244) // conversion from double to float
-# pragma warning(disable: 4305) //
+# pragma warning(disable: 4305) // truncation from larer type to smaller
# else
# error What version of MSVC++ is this?