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       1                 :            : 
       2                 :            : /*
       3                 :            :  * Copyright (C) 2012 Fujitsu.  All rights reserved.
       4                 :            :  * Written by Miao Xie <miaox@cn.fujitsu.com>
       5                 :            :  *
       6                 :            :  * This program is free software; you can redistribute it and/or
       7                 :            :  * modify it under the terms of the GNU General Public
       8                 :            :  * License v2 as published by the Free Software Foundation.
       9                 :            :  *
      10                 :            :  * This program is distributed in the hope that it will be useful,
      11                 :            :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      12                 :            :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13                 :            :  * General Public License for more details.
      14                 :            :  *
      15                 :            :  * You should have received a copy of the GNU General Public
      16                 :            :  * License along with this program; if not, write to the
      17                 :            :  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
      18                 :            :  * Boston, MA 021110-1307, USA.
      19                 :            :  */
      20                 :            : 
      21                 :            : #ifndef __BTRFS_MATH_H
      22                 :            : #define __BTRFS_MATH_H
      23                 :            : 
      24                 :            : #include <asm/div64.h>
      25                 :            : 
      26                 :            : static inline u64 div_factor(u64 num, int factor)
      27                 :            : {
      28   [ #  #  #  # ]:          0 :         if (factor == 10)
      29                 :            :                 return num;
      30                 :          0 :         num *= factor;
      31                 :          0 :         do_div(num, 10);
      32                 :            :         return num;
      33                 :            : }
      34                 :            : 
      35                 :            : static inline u64 div_factor_fine(u64 num, int factor)
      36                 :            : {
      37                 :            :         if (factor == 100)
      38                 :            :                 return num;
      39                 :            :         num *= factor;
      40                 :          0 :         do_div(num, 100);
      41                 :            :         return num;
      42                 :            : }
      43                 :            : 
      44                 :            : #endif