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Florian Fainelli
d282922461
This patch adds lib/gcd.c which contains a greatest common divider implementation taken from sound/core/pcm_timer.c Several usages of this new library function will be sent to subsystem maintainers. [[email protected]: use swap() (pointed out by Joe)] [[email protected]: just add gcd.o to obj-y, remove Kconfig changes] Signed-off-by: Florian Fainelli <[email protected]> Cc: Sergei Shtylyov <[email protected]> Cc: Takashi Iwai <[email protected]> Cc: Simon Horman <[email protected]> Cc: Julius Volz <[email protected]> Cc: David S. Miller <[email protected]> Cc: Patrick McHardy <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
19 lines
291 B
C
19 lines
291 B
C
#include <linux/kernel.h>
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#include <linux/gcd.h>
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#include <linux/module.h>
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/* Greatest common divisor */
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unsigned long gcd(unsigned long a, unsigned long b)
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{
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unsigned long r;
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if (a < b)
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swap(a, b);
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while ((r = a % b) != 0) {
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a = b;
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b = r;
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}
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return b;
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}
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EXPORT_SYMBOL_GPL(gcd);
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