prtv
prtv("user ", decpt, &ru.ru_utime, "\n");
prtv("sys ", decpt, &ru.ru_stime, "\n");
prtv("", decpt, &ru.ru_utime, " user ");
prtv("", decpt, &ru.ru_stime, " sys\n");
static void prtv(const char *, const char *, const struct timeval *,