rename vector_fmul_add() vector_fmul_reverse_c() and make them static.

[paraslash.git] / fec.c

diff --git a/fec.c b/fec.c
index 043a1f21869617869d2c6d0573bf71777611e2a3..d097b77de836248d79142348f254dd4c3ef57817 100644 (file)
--- a/fec.c
+++ b/fec.c
@@ -1,5 +1,6 @@
+/** \file fec.c Forward error correction based on Vandermonde matrices. */
+

 /*
 /*

- * fec.c -- forward error correction based on Vandermonde matrices

  * 980624
  * (C) 1997-98 Luigi Rizzo (luigi@iet.unipi.it)
  *
  * 980624
  * (C) 1997-98 Luigi Rizzo (luigi@iet.unipi.it)
  *


@@ -32,6 +33,8 @@
  * OF SUCH DAMAGE.
  */
 
  * OF SUCH DAMAGE.
  */
 

+#include <regex.h>
+

 #include "para.h"
 #include "error.h"
 #include "portable_io.h"
 #include "para.h"
 #include "error.h"
 #include "portable_io.h"


@@ -214,7 +217,7 @@ static void matmul(unsigned char *a, unsigned char *b, unsigned char *c,
  * Compute the inverse of a matrix.
  *
  * k is the size of the matrix 'src' (Gauss-Jordan, adapted from Numerical
  * Compute the inverse of a matrix.
  *
  * k is the size of the matrix 'src' (Gauss-Jordan, adapted from Numerical

- * Recipes in C). Returns -1 if 'src' is singular.
+ * Recipes in C). Returns negative on errors.

  */
 static int invert_mat(unsigned char *src, int k)
 {
  */
 static int invert_mat(unsigned char *src, int k)
 {


@@ -394,8 +397,13 @@ static void init_fec(void)
        fec_initialized = 1;
 }
 
        fec_initialized = 1;
 }
 

+/** Internal FEC parameters. */

 struct fec_parms {
 struct fec_parms {

-       int k, n; /* parameters of the code */
+       /** Number of data slices. */
+       int k;
+       /** Number of slices (including redundant slices). */
+       int n;
+       /** The encoding matrix, computed by init_fec(). */

        unsigned char *enc_matrix;
 };
 
        unsigned char *enc_matrix;
 };