1 /* static_permutation.h
2 * Copyright (C) 2008, Francisco Claude, all rights reserved.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #ifndef _STATIC_PERMUTATION_H
23 #define _STATIC_PERMUTATION_H
27 #define STATIC_PERMUTATION_MRRR_HDR 2
29 /** Base class for static permutations
30 * @author Francisco Claude
32 class static_permutation {
34 virtual ~static_permutation() {}
35 /** Computes the i-th element of the permutation */
36 virtual uint pi(uint i)=0;
37 /** Computes the inverse of i */
38 virtual uint rev_pi(uint i)=0;
39 /** Saves the permutation to fp, returns 0 in case of success */
40 virtual uint save(FILE *fp)=0;
41 /** Returns the size of the permutation */
42 virtual uint size()=0;
43 /** Loads a static_permutation from fp */
44 static static_permutation * load(FILE *fp);
47 #include <static_permutation_mrrr.h>