Import libcds.

[SXSI/libcds.git] / src / static_permutation / static_permutation_mrrr.h

diff --git a/src/static_permutation/static_permutation_mrrr.h b/src/static_permutation/static_permutation_mrrr.h
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+/* static_permutation_mrrr.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_MRRR_H
+#define _STATIC_PERMUTATION_MRRR_H
+
+#include <basics.h>
+#include <static_permutation.h>
+#include <perm.h>
+
+/** Wrapper for Diego Arroyuelo's implementation of Munro et al.'s permutations.
+ *  @author Francisco Claude
+ */
+class static_permutation_mrrr : public static_permutation {
+  public:
+    static_permutation_mrrr(uint * elems, uint nelems, uint t, static_bitsequence_builder * bmb);
+    virtual ~static_permutation_mrrr();
+    /** Computes the i-th element of the permutation */
+    virtual uint pi(uint i);
+    /** Computes the inverse of i */
+    virtual uint rev_pi(uint i);
+    /** Saves the permutation to fp, returns 0 in case of success */
+    virtual uint save(FILE *fp);
+    /** Returns the size of the permutation */
+    virtual uint size();
+    /** Loads a static_permutation from fp */
+    static static_permutation_mrrr * load(FILE *fp);
+  protected:
+    perm permutation;
+    static_permutation_mrrr();
+};
+
+#endif