From a2e8b18126ce0362add8202c26cd27f2588f77b2 Mon Sep 17 00:00:00 2001
From: nicksavers <nicksavers@gmail.com>
Date: Mon, 20 Oct 2014 12:39:14 +0200
Subject: [PATCH] Fix DataWord compareTo in convention with Comparable
 interface

---
 ethereumj-core/src/main/java/org/ethereum/vm/DataWord.java | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/ethereumj-core/src/main/java/org/ethereum/vm/DataWord.java b/ethereumj-core/src/main/java/org/ethereum/vm/DataWord.java
index ab2ad40d..c06eab38 100644
--- a/ethereumj-core/src/main/java/org/ethereum/vm/DataWord.java
+++ b/ethereumj-core/src/main/java/org/ethereum/vm/DataWord.java
@@ -282,9 +282,10 @@ public class DataWord implements Comparable<DataWord> {
     @Override
     public int compareTo(DataWord o) {
         if (o == null || o.getData() == null) return -1;
-
-        return FastByteComparisons.compareTo(
+        int result = FastByteComparisons.compareTo(
                 data, 0, data.length,
                 o.getData(), 0, o.getData().length);
+        // Convert result into -1, 0 or 1 as is the convention
+        return (int) Math.signum(result);
     }
 }
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