Author: nextgens
Date: 2008-11-18 18:59:45 +0000 (Tue, 18 Nov 2008)
New Revision: 23737
Modified:
trunk/contrib/java/org/spaceroots/mantissa/random/MersenneTwister.java
Log:
DOH. fix the seeding
Modified: trunk/contrib/java/org/spaceroots/mantissa/random/MersenneTwister.java
===================================================================
--- trunk/contrib/java/org/spaceroots/mantissa/random/MersenneTwister.java
2008-11-18 17:41:53 UTC (rev 23736)
+++ trunk/contrib/java/org/spaceroots/mantissa/random/MersenneTwister.java
2008-11-18 18:59:45 UTC (rev 23737)
@@ -151,16 +151,25 @@
}
int[] seeds = new int[seed.length/4];
for(int i=0;i<seeds.length;i+=4) {
- int x = 0;
- for(int j = 3; j >= 0; j--) {
- int y = (seed[j + i * 4] & 0xff);
- x = (x << 8) | y;
- }
- seeds[i] = x;
+ seeds[i] = MersenneTwister.bytesToInt(seed, i);
}
setSeed(seeds);
}
+ /**
+ * A copy of our @see{freenet.support.Fields}
+ * */
+ public static int bytesToInt(byte[] buf, int offset) {
+ if(buf.length < 4)
+ throw new IllegalArgumentException();
+ int x = 0;
+ for(int j = 3; j >= 0; j--) {
+ int y = (buf[j + offset] & 0xff);
+ x = (x << 8) | y;
+ }
+ return x;
+ }
+
/** Reinitialize the generator as if just built with the given int
array seed.
* <p>The state of the generator is exactly the same as a new
* generator built with the same seed.</p>
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