btrfs-progs/math.h
Eric Sandeen ba4f8cb411 Btrfs-progs: cleanup duplicated division functions
div_factor has been implemented for two times, cleanup it.
And I move them into a independent file named math.h because they are
common math functions.

[Eric Sandeen: port kernel commit 3fed40c to userspace]

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2013-08-09 14:32:28 +02:00

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/*
* Copyright (C) 2012 Fujitsu. All rights reserved.
* Written by Miao Xie <miaox@cn.fujitsu.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#ifndef __BTRFS_MATH_H
#define __BTRFS_MATH_H
static inline u64 div_factor(u64 num, int factor)
{
if (factor == 10)
return num;
num *= factor;
num /= 10;
return num;
}
#endif