2 files changed, 22 insertions, 17 deletions
diff --git a/libjava/classpath/java/math/BigDecimal.java b/libjava/classpath/java/math/BigDecimal.java
index 693c399874e..94b373b04be 100644
--- a/libjava/classpath/java/math/BigDecimal.java
+++ b/libjava/classpath/java/math/BigDecimal.java
@@ -365,16 +365,13 @@ public class BigDecimal extends Number implements Comparable
 
     // quotients are the same, so compare remainders
 
-    // remove trailing zeros
-    if (thisParts[1].equals (BigInteger.valueOf (0)) == false)
-      while (thisParts[1].mod (BigInteger.valueOf (10)).equals
-	     (BigInteger.valueOf (0)))
-      thisParts[1] = thisParts[1].divide (BigInteger.valueOf (10));
-    // again...
-    if (valParts[1].equals(BigInteger.valueOf (0)) == false)
-      while (valParts[1].mod (BigInteger.valueOf (10)).equals
-	     (BigInteger.valueOf (0)))
-	valParts[1] = valParts[1].divide (BigInteger.valueOf (10));
+    // Add some trailing zeros to the remainder with the smallest scale
+    if (scale < val.scale)
+      thisParts[1] = thisParts[1].multiply
+			(BigInteger.valueOf (10).pow (val.scale - scale));
+    else if (scale > val.scale)
+      valParts[1] = valParts[1].multiply
+			(BigInteger.valueOf (10).pow (scale - val.scale));
 
     // and compare them
     return thisParts[1].compareTo (valParts[1]);
diff --git a/libjava/classpath/java/math/BigInteger.java b/libjava/classpath/java/math/BigInteger.java
index 5a336b87248..86d6924af02 100644
--- a/libjava/classpath/java/math/BigInteger.java
+++ b/libjava/classpath/java/math/BigInteger.java
@@ -356,9 +356,9 @@ public class BigInteger extends Number implements Comparable
 
   public int signum()
   {
-    int top = words == null ? ival : words[ival-1];
-    if (top == 0 && words == null)
+    if (ival == 0 && words == null)
       return 0;
+    int top = words == null ? ival : words[ival-1];
     return top < 0 ? -1 : 1;
   }
 
@@ -2227,17 +2227,25 @@ public class BigInteger extends Number implements Comparable
     throws IOException, ClassNotFoundException
   {
     s.defaultReadObject();
-    words = byteArrayToIntArray(magnitude, signum < 0 ? -1 : 0);
-    BigInteger result = make(words, words.length);
-    this.ival = result.ival;
-    this.words = result.words;
+    if (magnitude.length == 0 || signum == 0)
+      {
+        this.ival = 0;
+        this.words = null;
+      }
+    else
+      {
+        words = byteArrayToIntArray(magnitude, signum < 0 ? -1 : 0);
+        BigInteger result = make(words, words.length);
+        this.ival = result.ival;
+        this.words = result.words;        
+      }    
   }
 
   private void writeObject(ObjectOutputStream s)
     throws IOException, ClassNotFoundException
   {
     signum = signum();
-    magnitude = toByteArray();
+    magnitude = signum == 0 ? new byte[0] : toByteArray();
     s.defaultWriteObject();
   }
 }