1#include <linux/compiler.h>
 2#include <linux/gcd.h>
 3#include <linux/export.h>
 4#include <linux/lcm.h>
 5
 6/* Lowest common multiple */
 7unsigned long lcm(unsigned long a, unsigned long b)
 8{
 9	if (a && b)
10		return (a / gcd(a, b)) * b;
11	else
12		return 0;
13}
14EXPORT_SYMBOL_GPL(lcm);
15
16unsigned long lcm_not_zero(unsigned long a, unsigned long b)
17{
18	unsigned long l = lcm(a, b);
19
20	if (l)
21		return l;
22
23	return (b ? : a);
24}
25EXPORT_SYMBOL_GPL(lcm_not_zero);