Changeset 2272 for zzufTweet

Timestamp:

Apr 12, 2008, 9:44:34 AM (15 years ago)

Author:

Sam Hocevar

Message:

• Set minimal fuzzing ratio to 0.000000001% (less than one bit changed on a whole DVD).

Location:

zzuf/trunk/src

Files:

• fuzz.c (modified) (1 diff)
• libzzuf.h (modified) (1 diff)

zzuf/trunk/src/fuzz.c

@@ -112 +112 @@
 
             /* Add some random dithering to handle ratio < 1.0/CHUNKBYTES */
-            todo = (int)((fuzz->ratio * (8 * CHUNKBYTES * 1000)
-                                             + _zz_rand(1000)) / 1000.0);
+            todo = (int)((fuzz->ratio * (8 * CHUNKBYTES) * 1000000.0
+                                + _zz_rand(1000000)) / 1000000.0);
             while(todo--)
             {

zzuf/trunk/src/libzzuf.h

@@ -26 +26 @@
 #define DEFAULT_SEED 0
 
-/* The default fuzzing ratio is, arbitrarily, 0.4% */
+/* The default fuzzing ratio is, arbitrarily, 0.4%. The minimal fuzzing
+ * ratio is 0.000000001% (less than one bit changed on a whole DVD). */
 #define DEFAULT_RATIO 0.004
-#define MIN_RATIO 0.00001
+#define MIN_RATIO 0.00000000001
 #define MAX_RATIO 5.0