new API function `createuserdata'

llimits.h

@@ -1,5 +1,5 @@
 /*
-** $Id: llimits.h,v 1.17 2000/10/06 19:28:38 roberto Exp roberto $
+** $Id: llimits.h,v 1.18 2000/10/09 13:47:32 roberto Exp roberto $
 ** Limits, basic types, and some other "installation-dependent" definitions
 ** See Copyright Notice in lua.h
 */
@@ -76,6 +76,11 @@ typedef unsigned long lint32;  /* unsigned int with at least 32 bits */
 
 
 
+/* type to ensure maximum alignment */
+union L_Umaxalign { double d; char *s; long l; };
+
+
+
 /*
 ** type for virtual-machine instructions
 ** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)