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 */
lcm(unsigned long a,unsigned long b)7 unsigned 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 }
14 EXPORT_SYMBOL_GPL(lcm);
15 
lcm_not_zero(unsigned long a,unsigned long b)16 unsigned 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 }
25 EXPORT_SYMBOL_GPL(lcm_not_zero);
26