mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-21 10:20:06 +00:00
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
|
/* Copyright (C) 1991, 1992, 1997, 1998 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 Library General Public License as
|
||
|
|
published by the Free Software Foundation; either version 2 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
|
||
|
|
Library General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Library General Public
|
||
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
||
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||
|
|
Boston, MA 02111-1307, USA. */
|
||
|
|
|
||
|
|
#include <limits.h>
|
||
|
|
#define ffsl __something_else
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
#undef ffsll
|
||
|
|
|
||
|
|
/* Find the first bit set in I. */
|
||
|
|
int
|
||
|
|
ffsll (i)
|
||
|
|
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
|