projects / linux.git / blame_incremental
| Commit | Line | Data |
|---|---|---|
| 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); |