X-Git-Url: http://git.nguyen.vg/gitweb/?a=blobdiff_plain;f=libcds%2Fsrc%2Fstatic_permutation%2Fstatic_permutation.h;fp=libcds%2Fsrc%2Fstatic_permutation%2Fstatic_permutation.h;h=7d8ffef0cee1d2a28105748958489877597036fd;hb=60f0f1a447b2b89ca99589c68333d72bcdeb263d;hp=0000000000000000000000000000000000000000;hpb=52cb7bbcda67f4676335cdd4eb96d4d87ad1445d;p=SXSI%2FXMLTree.git

diff --git a/libcds/src/static_permutation/static_permutation.h b/libcds/src/static_permutation/static_permutation.h
new file mode 100644
index 0000000..7d8ffef
--- /dev/null
+++ b/libcds/src/static_permutation/static_permutation.h
@@ -0,0 +1,49 @@
+/* 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