LXR linux/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
  12static 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
  20static 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
  29