1#include <linux/kernel.h>
2#include <linux/gcd.h>
3#include <linux/module.h>
4
5/* Greatest common divisor */
6unsigned long gcd(unsigned long a, unsigned long b)
7{
8	unsigned long r;
9
10	if (a < b)
11		swap(a, b);
12	while ((r = a % b) != 0) {
13		a = b;
14		b = r;
15	}
16	return b;
17}
18EXPORT_SYMBOL_GPL(gcd);
19