contrib/isn/ISMN.h

   1 /*
   2  * ISMN.h
   3  *        PostgreSQL type definitions for ISNs (ISBN, ISMN, ISSN, EAN13, UPC)
   4  *
   5  * Information recompiled by Kronuz on November 12, 2004
   6  * http://www.ismn-international.org
   7  *
   8  * IDENTIFICATION
   9  *        contrib/isn/ISMN.h
  10  *
  11  * M-3452-4680-5 <=> (0)-3452-4680-5 <=> 0345246805 <=> 9790345246805 <=> 979-0-3452-4680-5
  12  *
  13  *                         (M counts as 3)
  14  * ISMN                 M       3       4        5       2       4       6        8   0
  15  * Weight               3       1       3        1       3       1       3        1   3
  16  * Product              9 + 3 + 12 + 5 + 6 + 4 + 18 + 8 + 0 = 65
  17  *                              65 / 10 = 6 remainder 5
  18  * Check digit  10 - 5 = 5
  19  * => M-3452-4680-5
  20  *
  21  * ISMN                 9       7        9       0       3       4        5   2   4   6    8   0
  22  * Weight               1       3        1       3       1       3        1   3   1   3    1   3
  23  * Product              9 + 21 + 9 + 0 + 3 + 12 + 5 + 6 + 4 + 18 + 8 + 0 = 95
  24  *                              95 / 10 = 9 remainder 5
  25  * Check digit  10 - 5 = 5
  26  * => 979-0-3452-4680-5
  27  *
  28  * Since mod10(9*1 + 7*3 + 9*1 + 0*3) = mod10(M*3) = mod10(3*3) = 9; the check digit remains the same.
  29  *
  30  */
  31
  32 /* where the digit set begins, and how many of them are in the table */
  33 const unsigned ISMN_index[10][2] = {
  34         {0, 5},
  35         {5, 0},
  36         {5, 0},
  37         {5, 0},
  38         {5, 0},
  39         {5, 0},
  40         {5, 0},
  41         {5, 0},
  42         {5, 0},
  43         {5, 0},
  44 };
  45 const char *ISMN_range[][2] = {
  46         {"0-000", "0-099"},
  47         {"0-1000", "0-3999"},
  48         {"0-40000", "0-69999"},
  49         {"0-700000", "0-899999"},
  50         {"0-9000000", "0-9999999"},
  51         {NULL, NULL}
  52 };