error functions are shared by all libraries

lualib.h

@@ -2,7 +2,7 @@
 ** Libraries to be used in LUA programs
 ** Grupo de Tecnologia em Computacao Grafica
 ** TeCGraf - PUC-Rio
-** $Id: lualib.h,v 1.2 1994/08/24 15:29:02 celes Stab roberto $
+** $Id: lualib.h,v 1.3 1994/12/13 15:59:16 roberto Exp roberto $
 */
 
 #ifndef lualib_h
@@ -12,5 +12,11 @@ void iolib_open   (void);
 void strlib_open  (void);
 void mathlib_open (void);
 
+
+/* auxiliar functions (private) */
+void lua_arg_error(char *funcname);
+char *lua_check_string (int numArg, char *funcname);
+float lua_check_number (int numArg, char *funcname);
+
 #endif