fs/btrfs/math.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2012 Fujitsu.  All rights reserved.
   4  * Written by Miao Xie <miaox@cn.fujitsu.com>
   5  */
   6
   7 #ifndef BTRFS_MATH_H
   8 #define BTRFS_MATH_H
   9
  10 #include <asm/div64.h>
  11
  12 static inline u64 div_factor(u64 num, int factor)
  13 {
  14         if (factor == 10)
  15                 return num;
  16         num *= factor;
  17         return div_u64(num, 10);
  18 }
  19
  20 static inline u64 div_factor_fine(u64 num, int factor)
  21 {
  22         if (factor == 100)
  23                 return num;
  24         num *= factor;
  25         return div_u64(num, 100);
  26 }
  27
  28 #endif