2 files changed, 18 insertions, 4 deletions

diff --git a/src/unstable/bitstring.cpp b/src/unstable/bitstring.cpp
index 21c1316..b80c073 100644
--- a/src/unstable/bitstring.cpp
+++ b/src/unstable/bitstring.cpp
@@ -209,7 +209,7 @@ void Bu::BitString::flipBit( long iBit )
     caData[iBit/8] ^= (1<<(iBit%8));
 }
 
-bool Bu::BitString::getBit( long iBit )
+bool Bu::BitString::getBit( long iBit ) const
 {
     if( iBit >= iBits || iBit < 0 ) return false;
     if( (caData[iBit/8] & (1<<(iBit%8))) == 0 )
@@ -224,7 +224,7 @@ long Bu::BitString::getBitLength()
     return iBits;
 }
 
-long Bu::BitString::getSize()
+long Bu::BitString::getSize() const
 {
     return iBits;
 }
@@ -311,6 +311,14 @@ void Bu::BitString::clear()
     }
 }
 
+void Bu::BitString::fill()
+{
+    if( caData != NULL )
+    {
+        memset( caData, 0xff, iBytes );
+    }
+}
+
 bool Bu::BitString::setBitLength( long iLength, bool bClear )
 {
     return setSize( iLength, bClear );
diff --git a/src/unstable/bitstring.h b/src/unstable/bitstring.h
index afc22fb..70ba822 100644
--- a/src/unstable/bitstring.h
+++ b/src/unstable/bitstring.h
@@ -88,7 +88,7 @@ namespace Bu
          *@param iBit The index of the bit to test.
          *@returns True for a 1, false for a 0.
          */
-        bool getBit( long iBit );
+        bool getBit( long iBit ) const;
 
         /**
          * Inverts the entire BitString, in effect this calls flipBit on every
@@ -106,7 +106,7 @@ namespace Bu
         DEPRECATED
         long getBitLength();
 
-        long getSize();
+        long getSize() const;
 
         /**
          * Sets the entire BitString to zeros, but it does it very quickly.
@@ -115,6 +115,12 @@ namespace Bu
         void clear();
 
         /**
+         * Sets the entire BitString to ones, but it does it very quickly.
+         * This operation runs in O(N).
+         */
+        void fill();
+
+        /**
          * Gets another BitString that is autonomous of the current one
          * (contains a copy of the memory, not a pointer) and contains a subset
          * of the data in the current BitString.  This is an inclusive