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1 | /* |
2 | * This file is part of DisOrder | |
3 | * Copyright (C) 2008 Richard Kettlewell | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
18 | * USA | |
19 | */ | |
20 | ||
21 | /** @file lib/bits.h | |
22 | * @brief Bit operations | |
23 | */ | |
24 | ||
25 | #ifndef BITS_H | |
26 | #define BITS_H | |
27 | ||
7c8c2fc9 RK |
28 | #include <string.h> /* for fls() */ |
29 | ||
30 | #if HAVE_FLS | |
31 | static inline int leftmost_bit(uint32_t n) { | |
32 | return fls(n) - 1; | |
33 | } | |
34 | #else | |
f9d42b20 | 35 | int leftmost_bit(uint32_t n); |
7c8c2fc9 | 36 | #endif |
f9d42b20 RK |
37 | |
38 | #endif /* BITS_H */ | |
39 | ||
40 | ||
41 | /* | |
42 | Local Variables: | |
43 | c-basic-offset:2 | |
44 | comment-column:40 | |
45 | fill-column:79 | |
46 | indent-tabs-mode:nil | |
47 | End: | |
48 | */ |