| |
| /* |
| * 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 |
| |
| #include <asm/div64.h> |
| |
| static inline u64 div_factor(u64 num, int factor) |
| { |
| if (factor == 10) |
| return num; |
| num *= factor; |
| do_div(num, 10); |
| return num; |
| } |
| |
| static inline u64 div_factor_fine(u64 num, int factor) |
| { |
| if (factor == 100) |
| return num; |
| num *= factor; |
| do_div(num, 100); |
| return num; |
| } |
| |
| #endif |
