mirror of
https://github.com/torvalds/linux.git
synced 2024-11-25 05:32:00 +00:00
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. [akpm@linux-foundation.org: use swap() (pointed out by Joe)] [akpm@linux-foundation.org: just add gcd.o to obj-y, remove Kconfig changes] Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Takashi Iwai <tiwai@suse.de> Cc: Simon Horman <horms@verge.net.au> Cc: Julius Volz <juliusv@google.com> Cc: David S. Miller <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
19 lines
291 B
C
19 lines
291 B
C
#include <linux/kernel.h>
|
|
#include <linux/gcd.h>
|
|
#include <linux/module.h>
|
|
|
|
/* Greatest common divisor */
|
|
unsigned long gcd(unsigned long a, unsigned long b)
|
|
{
|
|
unsigned long r;
|
|
|
|
if (a < b)
|
|
swap(a, b);
|
|
while ((r = a % b) != 0) {
|
|
a = b;
|
|
b = r;
|
|
}
|
|
return b;
|
|
}
|
|
EXPORT_SYMBOL_GPL(gcd);
|