ceph/src/erasure-code/jerasure/jerasure/include/reed_sol.h

   1 /* *
   2  * Copyright (c) 2013, James S. Plank and Kevin Greenan
   3  * All rights reserved.
   4  *
   5  * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
   6  * Coding Techniques
   7  *
   8  * Revision 2.0: Galois Field backend now links to GF-Complete
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  *
  14  *  - Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  *
  17  *  - Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in
  19  *    the documentation and/or other materials provided with the
  20  *    distribution.
  21  *
  22  *  - Neither the name of the University of Tennessee nor the names of its
  23  *    contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  27  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  28  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  29  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  30  * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  31  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  32  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  33  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  34  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
  36  * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  37  * POSSIBILITY OF SUCH DAMAGE.
  38  */
  39
  40
  41 extern int *reed_sol_vandermonde_coding_matrix(int k, int m, int w);
  42 extern int *reed_sol_extended_vandermonde_matrix(int rows, int cols, int w);
  43 extern int *reed_sol_big_vandermonde_distribution_matrix(int rows, int cols, int w);
  44
  45 extern int reed_sol_r6_encode(int k, int w, char **data_ptrs, char **coding_ptrs, int size);
  46 extern int *reed_sol_r6_coding_matrix(int k, int w);
  47
  48 extern void reed_sol_galois_w08_region_multby_2(char *region, int nbytes);
  49 extern void reed_sol_galois_w16_region_multby_2(char *region, int nbytes);
  50 extern void reed_sol_galois_w32_region_multby_2(char *region, int nbytes);