X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Ftest%2Fao_fec_test.c;h=cbced6ae31435fb870ee8c599c02d88f9d564d5a;hp=b94b16dcd91441afb23dad5ffdf2f012cdd0f695;hb=1085ec5d57e0ed5d132f2bbdac1a0b6a32c0ab4a;hpb=939ad8bfd640ed55116703a58f87af06e75ef87e

diff --git a/src/test/ao_fec_test.c b/src/test/ao_fec_test.c
index b94b16dc..cbced6ae 100644
--- a/src/test/ao_fec_test.c
+++ b/src/test/ao_fec_test.c
@@ -3,7 +3,8 @@
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -100,6 +101,7 @@ ao_fuzz (uint8_t *in, int in_len, uint8_t *out, double dev)
 {
 	int	i;
 	int	errors = 0;
+	int	s;
 	
 	for (i = 0; i < in_len; i++) {
 		double	error = gaussian_random(0, dev);
@@ -115,6 +117,24 @@ ao_fuzz (uint8_t *in, int in_len, uint8_t *out, double dev)
 			else
 				byte -= error;
 		}
+
+		/* abcd efgh	8
+		 * abcd efga	7
+		 * abcd efab	6
+		 * abcd eabc	5
+		 * abcd abcd	4
+		 * abca bcab	3
+		 * abab abab	2
+		 * aaaa aaaa	1
+		 */
+
+#define SAVE		8
+#define SAVE_MASK	(((1 << SAVE) - 1) << (8 - SAVE))
+
+		byte &= SAVE_MASK;
+		for (s = SAVE; s < 8; s += SAVE)
+			byte |= byte >> s;
+
 		out[i] = byte;
 	}
 	return errors;