Function xstr2nonneg

src/od.c:1449–1455

Act like xstrtoimax (NPTR, NULL, BASE, VAL, VALID_SUFFIXES), except reject negative values, and *VAL may be set if LONGINT_INVALID is returned. */

   except reject negative values, and *VAL may be set if
   LONGINT_INVALID is returned.  */
static strtol_error
xstr2nonneg (char const *restrict nptr, int base, intmax_t *val,
             char const *restrict valid_suffixes)
{
  strtol_error s_err = xstrtoimax (nptr, NULL, base, val, valid_suffixes);
  return s_err != LONGINT_INVALID && *val < 0 ? LONGINT_INVALID : s_err;
}

/* If STR is a valid traditional offset specification with an optional
   leading '+', and can be represented in intmax_t, return true and