#include <common.h>
#include <linux/ctype.h>

unsigned long simple_strtoul(const char *cp, char **endp, unsigned int base)
{
	unsigned long result = 0, value;

	if (*cp == '0') {
		cp++;

		if ((*cp == 'x') && isxdigit(cp[1])) {
			base = 16;
			cp++;
		}

		if (!base)
			base = 8;
	}

	if (!base)
		base = 10;

	while (isxdigit(*cp) && (value = isdigit(*cp) ?
	       *cp - '0' : toupper(*cp) - 'A' + 10) < base) {
		result = result * base + value;
		cp++;
	}

	if (endp)
		*endp = (char *)cp;

	return result;
}
EXPORT_SYMBOL(simple_strtoul);

long simple_strtol(const char *cp, char **endp, unsigned int base)
{
	if (*cp == '-')
		return -simple_strtoul(cp + 1, endp, base);

	return simple_strtoul(cp, endp, base);
}
EXPORT_SYMBOL(simple_strtol);

unsigned long long simple_strtoull(const char *cp, char **endp, unsigned int base)
{
	unsigned long long result = 0, value;

	if (*cp == '0') {
		cp++;

		if ((*cp == 'x') && isxdigit(cp[1])) {
			base = 16;
			cp++;
		}

		if (!base)
			base = 8;
	}

	if (!base)
		base = 10;

	while (isxdigit(*cp) && (value = isdigit(*cp) ?
	       *cp - '0' : toupper(*cp) - 'A' + 10) < base) {
		result = result * base + value;
		cp++;
	}

	if (endp)
		*endp = (char *)cp;

	return result;
}
EXPORT_SYMBOL(simple_strtoull);

long long simple_strtoll(const char *cp, char **endp, unsigned int base)
{
	if (*cp == '-')
		return -simple_strtoull(cp + 1, endp, base);

	return simple_strtoull(cp, endp, base);
}
EXPORT_SYMBOL(simple_strtoll);