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/* Copyright (C) 1991-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://www.gnu.org/licenses/>. */
#include <limits.h>
#define ffsl __something_else
#include <string.h>
#undef ffsll
#include <math-use-builtins.h>
#include <libc-diag.h>
/* Find the first bit set in I. */
int
__ffsll (long long int i)
{
#if USE_FFSLL_BUILTIN
return __builtin_ffsll (i);
#else
unsigned long long int x = i & -i;
if (x <= 0xffffffff)
return ffs (i);
else
return 32 + ffs (i >> 32);
#endif
}
weak_alias (__ffsll, ffsll)
#if ULONG_MAX != UINT_MAX
#undef ffsl
weak_alias (ffsll, ffsl)
#endif
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