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Revision 3759b788498ffc0b2563181567af4c82d983f921 authored by James Bottomley on 14 January 2006, 15:28:07 UTC, committed by James Bottomley on 14 January 2006, 16:55:11 UTC 
[SCSI] mptfc: need to select transport attrs
 
Now that mptfc actually uses the transport class, it can't be built
without it.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
1 parent 569b11d
Raw File
int_sqrt.c 

#include <linux/kernel.h>
#include <linux/module.h>

/**
 * int_sqrt - rough approximation to sqrt
 * @x: integer of which to calculate the sqrt
 *
 * A very rough approximation to the sqrt() function.
 */
unsigned long int_sqrt(unsigned long x)
{
	unsigned long op, res, one;

	op = x;
	res = 0;

	one = 1 << 30;
	while (one > op)
		one >>= 2;

	while (one != 0) {
		if (op >= res + one) {
			op = op - (res + one);
			res = res +  2 * one;
		}
		res /= 2;
		one /= 4;
	}
	return res;
}
EXPORT_SYMBOL(int_sqrt);
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