unsigned long get_timer(unsigned long);
int vprintf(const char *, va_list);
unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base);
+int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);
char *getenv (char *name);
int setenv (char *varname, char *varvalue);
long simple_strtol(const char *cp,char **endp,unsigned int base);