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/*
* ffs function
*
* Copyright 2004 Hans Leidekker
*
* This 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.
*
* This 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#ifndef HAVE_FFS
int ffs( int x )
{
unsigned int y = (unsigned int)x;
if (y & 0x00000001) return 1;
if (y & 0x00000002) return 2;
if (y & 0x00000004) return 3;
if (y & 0x00000008) return 4;
if (y & 0x00000010) return 5;
if (y & 0x00000020) return 6;
if (y & 0x00000040) return 7;
if (y & 0x00000080) return 8;
if (y & 0x00000100) return 9;
if (y & 0x00000200) return 10;
if (y & 0x00000400) return 11;
if (y & 0x00000800) return 12;
if (y & 0x00001000) return 13;
if (y & 0x00002000) return 14;
if (y & 0x00004000) return 15;
if (y & 0x00008000) return 16;
if (y & 0x00010000) return 17;
if (y & 0x00020000) return 18;
if (y & 0x00040000) return 19;
if (y & 0x00080000) return 20;
if (y & 0x00100000) return 21;
if (y & 0x00200000) return 22;
if (y & 0x00400000) return 23;
if (y & 0x00800000) return 24;
if (y & 0x01000000) return 25;
if (y & 0x02000000) return 26;
if (y & 0x04000000) return 27;
if (y & 0x08000000) return 28;
if (y & 0x10000000) return 29;
if (y & 0x20000000) return 30;
if (y & 0x40000000) return 31;
if (y & 0x80000000) return 32;
return 0;
}
#endif /* HAVE_FFS */
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