lib/lcm.c

   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 */
   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
  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);