uu_strtouint
if (uu_strtouint(str, output, sizeof (*output), 0, 0, 0) == -1)
if (uu_strtouint(buf, out, sizeof (*out), 0, 0, UINT32_MAX) == -1)
if (uu_strtouint(buf, out, sizeof (*out), 0, 0, 1) == -1)
extern int uu_strtouint(const char *, void *, size_t, int, uint64_t, uint64_t);