Warning: That file was not part of the compilation database. It may have many parsing errors.
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
---|---|
2 | #ifndef _ASM_GENERIC_BITOPS_FFS_H_ |
3 | #define _ASM_GENERIC_BITOPS_FFS_H_ |
4 | |
5 | /** |
6 | * ffs - find first bit set |
7 | * @x: the word to search |
8 | * |
9 | * This is defined the same way as |
10 | * the libc and compiler builtin ffs routines, therefore |
11 | * differs in spirit from ffz (man ffs). |
12 | */ |
13 | static inline int ffs(int x) |
14 | { |
15 | int r = 1; |
16 | |
17 | if (!x) |
18 | return 0; |
19 | if (!(x & 0xffff)) { |
20 | x >>= 16; |
21 | r += 16; |
22 | } |
23 | if (!(x & 0xff)) { |
24 | x >>= 8; |
25 | r += 8; |
26 | } |
27 | if (!(x & 0xf)) { |
28 | x >>= 4; |
29 | r += 4; |
30 | } |
31 | if (!(x & 3)) { |
32 | x >>= 2; |
33 | r += 2; |
34 | } |
35 | if (!(x & 1)) { |
36 | x >>= 1; |
37 | r += 1; |
38 | } |
39 | return r; |
40 | } |
41 | |
42 | #endif /* _ASM_GENERIC_BITOPS_FFS_H_ */ |
43 |
Warning: That file was not part of the compilation database. It may have many parsing errors.