| // SPDX-License-Identifier: GPL-2.0-only | |
| #include <linux/compiler.h> | |
| #include <linux/gcd.h> | |
| #include <linux/export.h> | |
| #include <linux/lcm.h> | |
| /* Lowest common multiple */ | |
| unsigned long lcm(unsigned long a, unsigned long b) | |
| { | |
| if (a && b) | |
| return (a / gcd(a, b)) * b; | |
| else | |
| return 0; | |
| } | |
| EXPORT_SYMBOL_GPL(lcm); | |
| unsigned long lcm_not_zero(unsigned long a, unsigned long b) | |
| { | |
| unsigned long l = lcm(a, b); | |
| if (l) | |
| return l; | |
| return (b ? : a); | |
| } | |
| EXPORT_SYMBOL_GPL(lcm_not_zero); |