-#define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
-
-/* True (non-zero) iff DIGIT is a valid digit in radix BASE,
- where 2 <= BASE <= 16. */
-
-static int
-is_digit_in_base (unsigned char digit, int base)
-{
- if (!isxdigit (digit))
- return 0;
- if (base <= 10)
- return (isdigit (digit) && digit < base + '0');
- else
- return (isdigit (digit) || tolower (digit) < base - 10 + 'a');
-}
-
-static int
-digit_to_int (unsigned char c)
-{
- if (isdigit (c))
- return c - '0';
- else
- return tolower (c) - 'a' + 10;
-}
-
-/* As for strtoul, but for ULONGEST results. */
-
-ULONGEST
-strtoulst (const char *num, const char **trailer, int base)
-{
- unsigned int high_part;
- ULONGEST result;
- int i;
- unsigned char lim;
-
- if (base < 2 || base > 16)
- {
- errno = EINVAL;
- return 0;
- }
- lim = base - 1 + '0';
-
- result = high_part = 0;
- for (i = 0; is_digit_in_base (num[i], base); i += 1)
- {
- result = result*base + digit_to_int (num[i]);
- high_part = high_part*base + (unsigned int) (result >> HIGH_BYTE_POSN);
- result &= ((ULONGEST) 1 << HIGH_BYTE_POSN) - 1;
- if (high_part > 0xff)
- {
- errno = ERANGE;
- result = high_part = 0;
- break;
- }
- }
-
- if (trailer != NULL)
- *trailer = &num[i];
-
- return result + ((ULONGEST) high_part << HIGH_BYTE_POSN);
-}
-