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Merge tag 'mmc-v4.3-rc4' of git://git.linaro.org/people/ulf.hansson/mmc
[mirror_ubuntu-artful-kernel.git] / lib / lcm.c
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6016daed 1#include <linux/compiler.h>
2cda2728 2#include <linux/gcd.h>
8bc3bcc9 3#include <linux/export.h>
72d39508 4#include <linux/lcm.h>
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5
6/* Lowest common multiple */
7unsigned long lcm(unsigned long a, unsigned long b)
8{
9 if (a && b)
74a5fef7 10 return (a / gcd(a, b)) * b;
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11 else
12 return 0;
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13}
14EXPORT_SYMBOL_GPL(lcm);
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15
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}
25EXPORT_SYMBOL_GPL(lcm_not_zero);