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Diffstat (limited to '1.2-netsec/codecs/lpc10/ham84.c')
| -rw-r--r-- | 1.2-netsec/codecs/lpc10/ham84.c | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/1.2-netsec/codecs/lpc10/ham84.c b/1.2-netsec/codecs/lpc10/ham84.c deleted file mode 100644 index 9281d75d2..000000000 --- a/1.2-netsec/codecs/lpc10/ham84.c +++ /dev/null @@ -1,126 +0,0 @@ -/* - -$Log$ -Revision 1.15 2004/06/26 03:50:14 markster -Merge source cleanups (bug #1911) - -Revision 1.14 2003/02/12 13:59:15 matteo -mer feb 12 14:56:57 CET 2003 - -Revision 1.1.1.1 2003/02/12 13:59:15 matteo -mer feb 12 14:56:57 CET 2003 - -Revision 1.2 2000/01/05 08:20:39 markster -Some OSS fixes and a few lpc changes to make it actually work - - * Revision 1.1 1996/08/19 22:32:07 jaf - * Initial revision - * - -*/ - -/* -- translated by f2c (version 19951025). - You must link the resulting object file with the libraries: - -lf2c -lm (in that order) -*/ - -#include "f2c.h" - -#ifdef P_R_O_T_O_T_Y_P_E_S -extern int ham84_(integer *input, integer *output, integer *errcnt); -#endif - -/* ***************************************************************** */ - -/* HAM84 Version 45G */ - -/* $Log$ - * Revision 1.15 2004/06/26 03:50:14 markster - * Merge source cleanups (bug #1911) - * -/* Revision 1.14 2003/02/12 13:59:15 matteo -/* mer feb 12 14:56:57 CET 2003 -/* -/* Revision 1.1.1.1 2003/02/12 13:59:15 matteo -/* mer feb 12 14:56:57 CET 2003 -/* -/* Revision 1.2 2000/01/05 08:20:39 markster -/* Some OSS fixes and a few lpc changes to make it actually work -/* - * Revision 1.1 1996/08/19 22:32:07 jaf - * Initial revision - * */ -/* Revision 1.3 1996/03/21 15:26:00 jaf */ -/* Put comment header in standard form. */ - -/* Revision 1.2 1996/03/13 22:00:13 jaf */ -/* Comments added explaining that none of the local variables of this */ -/* subroutine need to be saved from one invocation to the next. */ - -/* Revision 1.1 1996/02/07 14:47:04 jaf */ -/* Initial revision */ - - -/* ***************************************************************** */ - -/* Hamming 8,4 Decoder - can correct 1 out of seven bits */ -/* and can detect up to two errors. */ - -/* Input: */ -/* INPUT - Seven bit data word, 4 bits parameter and */ -/* 4 bits parity information */ -/* Input/Output: */ -/* ERRCNT - Sums errors detected by Hamming code */ -/* Output: */ -/* OUTPUT - 4 corrected parameter bits */ - -/* This subroutine is entered with an eight bit word in INPUT. The 8th */ -/* bit is parity and is stripped off. The remaining 7 bits address the */ -/* hamming 8,4 table and the output OUTPUT from the table gives the 4 */ -/* bits of corrected data. If bit 4 is set, no error was detected. */ -/* ERRCNT is the number of errors counted. */ - -/* This subroutine has no local state. */ - -/* Subroutine */ int ham84_(integer *input, integer *output, integer *errcnt) -{ - /* Initialized data */ - - static integer dactab[128] = { 16,0,0,3,0,5,14,7,0,9,14,11,14,13,30,14,0, - 9,2,7,4,7,7,23,9,25,10,9,12,9,14,7,0,5,2,11,5,21,6,5,8,11,11,27, - 12,5,14,11,2,1,18,2,12,5,2,7,12,9,2,11,28,12,12,15,0,3,3,19,4,13, - 6,3,8,13,10,3,13,29,14,13,4,1,10,3,20,4,4,7,10,9,26,10,4,13,10,15, - 8,1,6,3,6,5,22,6,24,8,8,11,8,13,6,15,1,17,2,1,4,1,6,15,8,1,10,15, - 12,15,15,31 }; - - integer i__, j, parity; - -/* Arguments */ -/* Parameters/constants */ -/* Local variables that need not be saved */ -/* Determine parity of input word */ - parity = *input & 255; - parity ^= parity / 16; - parity ^= parity / 4; - parity ^= parity / 2; - parity &= 1; - i__ = dactab[*input & 127]; - *output = i__ & 15; - j = i__ & 16; - if (j != 0) { -/* No errors detected in seven bits */ - if (parity != 0) { - ++(*errcnt); - } - } else { -/* One or two errors detected */ - ++(*errcnt); - if (parity == 0) { -/* Two errors detected */ - ++(*errcnt); - *output = -1; - } - } - return 0; -} /* ham84_ */ - |