~mdw / disorder / blame
| Commit | Line | Data |
|---|---|---|
| f9d42b20 RK |
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 | */ |