mirror of https://code.videolan.org/videolan/vlc
34 lines
1.3 KiB
C
34 lines
1.3 KiB
C
/*****************************************************************************
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* ffsll.c: GNU ffsll() replacement
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*****************************************************************************
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* Copyright © 2015 Rémi Denis-Courmont
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <limits.h>
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int ffsll(long long x)
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{
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for (unsigned i = 0; i < sizeof (x) * CHAR_BIT; i++)
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if ((x >> i) & 1)
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return i + 1;
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return 0;
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}
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