diff options
author | Ingo Molnar <mingo@kernel.org> | 2019-05-16 09:04:48 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2019-05-16 09:04:48 +0200 |
commit | 00f5764dbb040188e5dce2cd9e648360886b045c (patch) | |
tree | 2dc969bb165a27a7cebdd1798b7a697243a790de /lib/math/lcm.c | |
parent | 409ca45526a428620d8efb362ccfd4b1e6b80642 (diff) | |
parent | 5ac94332248ee017964ba368cdda4ce647e3aba7 (diff) |
Merge branch 'linus' into x86/urgent, to pick up dependent changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib/math/lcm.c')
-rw-r--r-- | lib/math/lcm.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/math/lcm.c b/lib/math/lcm.c new file mode 100644 index 000000000000..03d7fcb420b5 --- /dev/null +++ b/lib/math/lcm.c @@ -0,0 +1,25 @@ +#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); |