pcompress/utils/phash/lookupa.h
Moinak Ghosh 991482403b Add extension based file type detection and setting segment data type.
Use Bob Jenkins Minimal Perfect Hash to check for known extensions.
Use semaphore signaling and direct buffer copy for extraction.
Miscellaneous fixes.
2013-11-07 21:48:54 +05:30

49 lines
1.6 KiB
C

/*
* This file is a part of Pcompress, a chunked parallel multi-
* algorithm lossless compression and decompression program.
*
* Copyright (C) 2012-2013 Moinak Ghosh. All rights reserved.
* Use is subject to license terms.
*
* This program 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 3 of the License, or (at your option) any later version.
*
* This program 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 program.
* If not, see <http://www.gnu.org/licenses/>.
*
* moinakg@belenix.org, http://moinakg.wordpress.com/
*
*/
/*
------------------------------------------------------------------------------
By Bob Jenkins, September 1996.
lookupa.h, a hash function for table lookup, same function as lookup.c.
Use this code in any way you wish. Public Domain. It has no warranty.
Source is http://burtleburtle.net/bob/c/lookupa.h
------------------------------------------------------------------------------
*/
#ifndef STANDARD
#include "standard.h"
#endif
#ifndef LOOKUPA
#define LOOKUPA
#define CHECKSTATE 8
#define hashsize(n) ((ub4)1<<(n))
#define hashmask(n) (hashsize(n)-1)
ub4 lookup(/*_ ub1 *k, ub4 length, ub4 level _*/);
void checksum(/*_ ub1 *k, ub4 length, ub4 *state _*/);
#endif /* LOOKUPA */