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- /* Copyright (C) 1991-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Torbjorn Granlund (tege@sics.se).
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
- #include <limits.h>
- #define ffsl __something_else
- #include <string.h>
- #undef ffsll
- /* Find the first bit set in I. */
- int
- ffsll (long long int i)
- {
- unsigned long long int x = i & -i;
- if (x <= 0xffffffff)
- return ffs (i);
- else
- return 32 + ffs (i >> 32);
- }
- #if ULONG_MAX != UINT_MAX
- #undef ffsl
- weak_alias (ffsll, ffsl)
- #endif
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