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+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * - Neither the name of the University of Tennessee nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+ Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+ Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+ Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "jerasure.h"
+#include "reed_sol.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+static void usage(char *s)
+{
+ fprintf(stderr, "usage: reed_sol_02 k m w - Vandermonde matrices in GF(2^w).\n");
+ fprintf(stderr, " \n");
+ fprintf(stderr, " k+m must be <= 2^w. This simply prints out the \n");
+ fprintf(stderr, " Vandermonde matrix in GF(2^w), and then the generator\n");
+ fprintf(stderr, " matrix that is constructed from it. See [Plank-Ding-05] for\n");
+ fprintf(stderr, " information on how this construction proceeds\n");
+ fprintf(stderr, " \n");
+ fprintf(stderr, "This demonstrates: reed_sol_extended_vandermonde_matrix()\n");
+ fprintf(stderr, " reed_sol_big_vandermonde_coding_matrix()\n");
+ fprintf(stderr, " reed_sol_vandermonde_coding_matrix()\n");
+ fprintf(stderr, " jerasure_print_matrix()\n");
+ if (s != NULL) fprintf(stderr, "%s\n", s);
+ exit(1);
+}
+
+int main(int argc, char **argv)
+{
+ int k, w, m;
+ int *matrix;
+
+ if (argc != 4) usage(NULL);
+ if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+ if (sscanf(argv[2], "%d", &m) == 0 || m <= 0) usage("Bad m");
+ if (sscanf(argv[3], "%d", &w) == 0 || w <= 0 || w > 32) usage("Bad w");
+ if (w <= 30 && k + m > (1 << w)) usage("k + m is too big");
+
+ matrix = reed_sol_extended_vandermonde_matrix(k+m, k, w);
+
+ printf("<HTML><TITLE>reed_sol_02 %d %d %d</title>\n", k, m, w);
+ printf("<h3>reed_sol_02 %d %d %d</h3>\n", k, m, w);
+ printf("<pre>\n");
+ printf("Extended Vandermonde Matrix:\n\n");
+ jerasure_print_matrix(matrix, k+m, k, w);
+ printf("\n");
+
+ matrix = reed_sol_big_vandermonde_distribution_matrix(k+m, k, w);
+ printf("Vandermonde Generator Matrix (G^T):\n\n");
+ jerasure_print_matrix(matrix, k+m, k, w);
+ printf("\n");
+
+ matrix = reed_sol_vandermonde_coding_matrix(k, m, w);
+ printf("Vandermonde Coding Matrix:\n\n");
+ jerasure_print_matrix(matrix, m, k, w);
+ printf("\n");
+
+
+ return 0;
+}