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5da3d377 UD |
1 | /* Find first set bit in a word, counted from least significant end. |
2 | For PowerPC. | |
b168057a | 3 | Copyright (C) 1991-2015 Free Software Foundation, Inc. |
5da3d377 UD |
4 | This file is part of the GNU C Library. |
5 | Contributed by Torbjorn Granlund (tege@sics.se). | |
6 | ||
7 | The GNU C Library is free software; you can redistribute it and/or | |
8 | modify it under the terms of the GNU Lesser General Public | |
9 | License as published by the Free Software Foundation; either | |
10 | version 2.1 of the License, or (at your option) any later version. | |
11 | ||
12 | The GNU C Library is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
18 | License along with the GNU C Library; if not, see |
19 | <http://www.gnu.org/licenses/>. */ | |
5da3d377 UD |
20 | |
21 | #define ffsl __something_else | |
22 | #include <limits.h> | |
23 | #include <string.h> | |
24 | ||
25 | #undef ffs | |
26 | ||
27 | int | |
28 | __ffsll (long long int x) | |
29 | { | |
30 | int cnt; | |
31 | ||
32 | asm ("cntlzd %0,%1" : "=r" (cnt) : "r" (x & -x)); | |
33 | return 64 - cnt; | |
34 | } | |
35 | weak_alias (__ffsll, ffsll) | |
36 | #undef ffsl | |
37 | weak_alias (__ffsll, ffsl) |