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 
div_factor(u64 num,int factor)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 
div_factor_fine(u64 num,int factor)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
29