Function strtoll

payloads/libpayload/libc/string.c:356–383

 */

long long int strtoll(const char *orig_ptr, char **endptr, int base)
{
	const char *ptr = orig_ptr;
	int is_negative = 0;

	/* Purge whitespace */

	for ( ; *ptr && isspace(*ptr); ptr++);

	if (ptr[0] == '-') {
		is_negative = 1;
		ptr++;
	}

	unsigned long long uval = strtoull(ptr, endptr, base);

	/* If the whole string is unparseable, endptr should point to start. */
	if (endptr && *endptr == ptr)
		*endptr = (char *)orig_ptr;

	if (uval > (unsigned long long)LLONG_MAX + !!is_negative)
		uval = (unsigned long long)LLONG_MAX + !!is_negative;

	if (is_negative)
		return -uval;
	else
		return uval;
}

long int strtol(const char *ptr, char **endptr, int base)
{