--- /dev/null
+/* static_permutation.h
+ * Copyright (C) 2008, Francisco Claude, all rights reserved.
+ *
+ * Permutation
+ *
+ * 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
+ *
+ */
+
+#ifndef _STATIC_PERMUTATION_H
+#define _STATIC_PERMUTATION_H
+
+#include <basics.h>
+
+#define STATIC_PERMUTATION_MRRR_HDR 2
+
+/** Base class for static permutations
+ * @author Francisco Claude
+ */
+class static_permutation {
+ public:
+ virtual ~static_permutation() {}
+ /** Computes the i-th element of the permutation */
+ virtual uint pi(uint i)=0;
+ /** Computes the inverse of i */
+ virtual uint rev_pi(uint i)=0;
+ /** Saves the permutation to fp, returns 0 in case of success */
+ virtual uint save(FILE *fp)=0;
+ /** Returns the size of the permutation */
+ virtual uint size()=0;
+ /** Loads a static_permutation from fp */
+ static static_permutation * load(FILE *fp);
+};
+
+#include <static_permutation_mrrr.h>
+
+#endif