| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1991, 1992, 1997, 1998 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | Contributed by Torbjorn Granlund (tege@sics.se). |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, write to the Free |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 18 | 02111-1307 USA. */ |
| 19 | |
| 20 | #include <limits.h> |
| 21 | #include <string.h> |
| 22 | |
| 23 | /* Find the first bit set in I. */ |
| 24 | int ffsll (long long int i) |
| 25 | { |
| 26 | unsigned long long int x = i & -i; |
| 27 | |
| 28 | if (x <= 0xffffffff) |
| 29 | return ffs (i); |
| 30 | else |
| 31 | return 32 + ffs (i >> 32); |
| 32 | } |
| 33 | |
| 34 | #if ULONG_MAX != UINT_MAX |
| 35 | strong_alias_untyped(ffsll, ffsl) |
| 36 | #endif |