#define STATIC_ARRAY_SIZE(a) (sizeof (a) / sizeof (*(a)))
char *sstrncpy (char *dest, const char *src, size_t n);
+int ssnprintf (char *dest, size_t n, const char *format, ...);
char *sstrdup(const char *s);
void *smalloc(size_t size);
char *sstrerror (int errnum, char *buf, size_t buflen);