-; void xprintf (const prog_char *format, ...);\r
-; void xsprintf(char*, const prog_char *format, ...);\r
-; void xfprintf(void(*func)(char), const prog_char *format, ...);\r
+; void __xprintf (const char *format_p, ...);\r
+; void __xsprintf(char*, const char *format_p, ...);\r
+; void __xfprintf(void(*func)(char), const char *format_p, ...);\r