-extern void sprintfv(char *buf, const char *format, va_list args);\r
-extern int ssprintfv(char *format, va_list args);\r
-extern int sprintf(char *buf, const char *format, ...);
+extern int vsnprintf(char *buf, size_t __maxlen, const char *format, va_list args);\r
+extern int vsprintf(char *buf, const char *format, va_list args);\r
+extern int sprintf(char *buf, const char *format, ...);\r
+extern int snprintf(char *buf, size_t maxlen, const char *format, ...);\r