[mirror_ubuntu-zesty-kernel.git] / lib / gcd.c

#include <linux/kernel.h>
#include <linux/gcd.h>
#include <linux/export.h>

/* Greatest common divisor */
unsigned long gcd(unsigned long a, unsigned long b)
{
	unsigned long r;

	if (a < b)
		swap(a, b);

	if (!b)
		return a;
	while ((r = a % b) != 0) {
		a = b;
		b = r;
	}
	return b;
}
EXPORT_SYMBOL_GPL(gcd);
Commit	Line	Data
d2829224 FF	1	#include <linux/kernel.h>
d2829224 FF	2	#include <linux/gcd.h>
8bc3bcc9	3	#include <linux/export.h>
d2829224 FF	4
	5	/* Greatest common divisor */
	6	unsigned long gcd(unsigned long a, unsigned long b)
	7	{
	8	unsigned long r;
	9
	10	if (a < b)
	11	swap(a, b);
e9687567 DB	12
	13	if (!b)
	14	return a;
d2829224 FF	15	while ((r = a % b) != 0) {
	16	a = b;
	17	b = r;
	18	}
	19	return b;
	20	}
	21	EXPORT_SYMBOL_GPL(gcd);