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