Initial Commit

lib/ldpc/dec.h

@@ -0,0 +1,43 @@
+/* DEC.H - Interface to decoding procedures. */
+
+/* Copyright (c) 1995-2012 by Radford M. Neal.
+ *
+ * Permission is granted for anyone to copy, use, modify, and distribute
+ * these programs and accompanying documents for any purpose, provided
+ * this copyright notice is retained and prominently displayed, and note
+ * is made of any changes made to these programs.  These programs and
+ * documents are distributed without any warranty, express or implied.
+ * As the programs were written for research purposes only, they have not
+ * been tested to the degree that would be advisable in any important
+ * application.  All use of these programs is entirely at the user's own
+ * risk.
+ */
+
+
+/* DECODING METHOD, ITS PARAMETERS, AND OTHER VARIABLES.  The global variables 
+   declared here are located in dec.c. */
+
+typedef enum 
+{ Enum_block, Enum_bit, Prprp
+} decoding_method;
+
+extern decoding_method dec_method; /* Decoding method to use */
+
+extern int ldpc_table;	/* Trace option, 2 for a table of decoding details */
+extern int block_no;	/* Number of current block, from zero */
+
+extern int max_iter;	/* Maximum number of iteratons of decoding to do */
+extern char *gen_file;	/* Generator file for Enum_block and Enum_bit */
+
+
+/* PROCEDURES RELATING TO DECODING METHODS. */
+
+void enum_decode_setup (void);
+unsigned enum_decode (double *, char *, double *, int);
+
+void prprp_decode_setup (void);
+unsigned prprp_decode 
+(mod2sparse *, double *, char *, char *, double *);
+
+void initprp (mod2sparse *, double *, char *, double *);
+void iterprp (mod2sparse *, double *, char *, double *);