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 };
53