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1/* Copyright (C) 1991-2019 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, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <limits.h>
20#define ffsl __something_else
21#include <string.h>
22
23#undef ffsll
24
25/* Find the first bit set in I. */
26int
27ffsll (long long int i)
28{
29 unsigned long long int x = i & -i;
30
31 if (x <= 0xffffffff)
32 return ffs (i);
33 else
34 return 32 + ffs (i >> 32);
35}
36
37#if ULONG_MAX != UINT_MAX
38#undef ffsl
39weak_alias (ffsll, ffsl)
40#endif
41

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