Random: Don't need extra bits if power of two

2017-03-08 16:25:27 +00:00
parent 23ee40d990
commit 6ef6106336
1 changed files with 4 additions and 3 deletions
--- a/core/java/src/net/i2p/util/FortunaRandomSource.java
+++ b/core/java/src/net/i2p/util/FortunaRandomSource.java
@@ -108,12 +108,13 @@ public class FortunaRandomSource extends RandomSource implements EntropyHarveste

        // get at least 4 extra bits if possible for better
        // distribution after the %
+        // No extra needed if power of two.
        int numBits;
-        if (n > 0xfffff)
+        if (n > 0x100000)
            numBits = 31;
-        else if (n > 0xfff)
+        else if (n > 0x1000)
            numBits = 24;
-        else if (n > 0xf)
+        else if (n > 0x10)
            numBits = 16;
        else
            numBits = 8;