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9888c340 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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2 | /* |
3 | * Copyright (C) 2012 Fujitsu. All rights reserved. | |
4 | * Written by Miao Xie <miaox@cn.fujitsu.com> | |
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5 | */ |
6 | ||
9888c340 DS |
7 | #ifndef BTRFS_MATH_H |
8 | #define BTRFS_MATH_H | |
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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; | |
f8c269d7 | 17 | return div_u64(num, 10); |
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18 | } |
19 | ||
20 | static inline u64 div_factor_fine(u64 num, int factor) | |
21 | { | |
22 | if (factor == 100) | |
23 | return num; | |
24 | num *= factor; | |
f8c269d7 | 25 | return div_u64(num, 100); |
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26 | } |
27 | ||
28 | #endif |